CN103974138A - Method and device for preloading videos in CDN - Google Patents

Abstract

The invention aims at providing a method and device for preloading videos in a CDN. The method specially includes the steps of determining access heat degree information of the videos; determining corresponding preloading information according to the access heat degree information, wherein the preloading information comprises the corresponding to-be-preloaded videos and preloading nodes, corresponding to the to-be-preloaded videos, in the CDN; loading the to-be-preloaded videos on the preloading nodes according to the preloading information. Compared with the prior art, the method and device have the advantages that the corresponding preloading information is determined according to the access heat degree information of the videos so that the to-be-preloaded videos can be loaded on the preloading nodes, distribution of the videos among the different CDN nodes is accordingly optimized according to the access heat degree information of the videos, video storage of the CDN nodes is optimized under the condition that storage space of a machine room server corresponding to the CDN nodes is limited, the efficiency for a user to obtain the videos is improved, and the video access experience of the user is correspondingly improved.

Description

For the method and apparatus at content distributing network prestrain video

Technical field

The present invention relates to Internet video field, relate in particular to a kind of for the technology at content distributing network prestrain video.

Background technology

Content distributing network (Content Delivery Network, CDN) one deck intelligent virtual network on existing Internet basic forming by place node server everywhere at network, user's request is led again on the nearest service node of user according to the connection of network traffics and each node, load state and the integrated information such as distance and response time to user in real time, greatly solve the situation of internet (Internet) network congestion, improved the response speed of user access request.But, the limited storage space of the corresponding machine room server of CDN node, and, the level of interest difference of the user of zones of different to video, prior art cannot realize at all videos of each CDN node standby to meet user's different video requirements for access, in the time that the user in the region served of CDN node of backup video is not too interested in this video, this CDN node can not play one's part to the full, cause node resource waste, and the user that can not meet respective regions when the joint behavior of CDN node of backup video is during to the broadcasting demand of video, this CDN node can not be well for user provides service, as discontinuous in video playback, the situation such as the picture sound of video is asynchronous with real-time online data, even occur that video can not load, the video access that has affected user is experienced.

Summary of the invention

The object of this invention is to provide a kind of for the method and apparatus at content distributing network prestrain video.

According to an aspect of the present invention, provide a kind of in content distributing network the method for prestrain video, wherein, the method comprises:

A determines the access temperature information of video;

B, according to described access temperature information, determines corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding;

C, according to described preload information, treats prestrain video described in loading on described prestrain node.

According to a further aspect in the invention, also provide a kind of in content distributing network the prestrain equipment of prestrain video, wherein, this prestrain equipment comprises:

Temperature determining device, for determining the access temperature information of video;

Information determining device, for according to described access temperature information, determines corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding;

Charger, for according to described preload information, treats prestrain video described in loading on described prestrain node.

Compared with prior art, the present invention passes through according to the access temperature information of video, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding, described in loading, treat prestrain video on described prestrain node, thereby realize the access temperature information according to video, optimize the distribution of video between different CDN nodes, and in the case of the limited storage space of the corresponding machine room server of CDN node, optimize the video storage of CDN node, improve the efficiency that user obtains video, correspondingly, also the video access that has promoted user is experienced, and, the present invention is in the time determining until prestrain node corresponding to prestrain video, also can be based on the corresponding network topology structure of described content distributing network, determine the corresponding one or more candidate's prestrain nodes of described video to be loaded, with according to the node diagnostic information of described candidate's prestrain node, from described one or more candidate's prestrain nodes determine with described in treat the preferred prestrain node that prestrain video is corresponding, to treat that by described prestrain video and described preferred prestrain node are as corresponding preload information, thereby realize further the load balancing between each node in content distributing network, improve the efficiency that user obtains video, and the video access that has promoted user is experienced, in addition, the present invention also can be according to described preload information, determine the prestrain path for the treatment of the corresponding source node of prestrain video and correspondence described in described content distributing network, with based on described prestrain path, described in being incited somebody to action by described source node, treat that prestrain video is loaded on described prestrain node, thereby further optimize the distribution of video between different CDN nodes, realize the load balancing between each node in content distributing network, correspondingly, improve user and obtained the efficiency of video, and promoted user's video access experience.

In addition, the present invention also can be according to described access temperature information, determine corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete, realize the copy amount by reducing the described pre-deletion video of storing in the corresponding node in described content distributing network, discharge the memory space of the server that this node is corresponding, can be used for the higher video of memory access temperature information.

Brief description of the drawings

By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:

Fig. 1 illustrates a kind of for the equipment schematic diagram at content distributing network prestrain video according to one aspect of the invention;

Fig. 2 illustrates in accordance with a preferred embodiment of the present invention a kind of for the equipment schematic diagram at content distributing network prestrain video;

Fig. 3 illustrates according to a further aspect of the present invention a kind of for the method flow diagram at content distributing network prestrain video;

Fig. 4 illustrates in accordance with a preferred embodiment of the present invention a kind of for the method flow diagram at content distributing network prestrain video.

In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Fig. 1 illustrates a kind of for the prestrain equipment 1 at content distributing network prestrain video according to one aspect of the invention, at this, described content distributing network comprises multiple CDN nodes, it serves the user of different geographical and/or region that it is served has juxtaposition, the user who is areal as multiple CDN nodes provides service, wherein, this prestrain equipment 1 comprises temperature determining device 11, information determining device 12 and charger 13.Particularly, temperature determining device 11 is determined the access temperature information of video; Information determining device 12, according to described access temperature information, is determined corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding; Charger 13, according to described preload information, is treated prestrain video described in loading on described prestrain node.At this, described prestrain equipment 1 can be by the network equipment as realizations such as network host, single network server, multiple webserver collection or the set of computers based on cloud computing.At this, cloud is made up of a large amount of main frames based on cloud computing (Cloud Computing) or the webserver, and wherein, cloud computing is the one of Distributed Calculation, the super virtual machine being made up of the loosely-coupled computer collection of a group.Those skilled in the art will be understood that above-mentioned prestrain equipment 1 is only for giving an example, and other prestrain equipment 1 existing or that may occur from now on, as applicable to the present invention, also should be included in protection range of the present invention, and be contained in this at this with way of reference.At this, prestrain equipment 1 comprise a kind of can be according to the instruction of prior setting or storage, automatically carry out the electronic equipment of numerical computations and information processing, its hardware includes but not limited to microprocessor, application-specific integrated circuit (ASIC) (ASIC), programmable gate array (FPGA), digital processing unit (DSP), embedded device etc.

Particularly, temperature determining device 11 is determined the access temperature information of video.At this, described access temperature message reflection the level of interest of user to video, the level of interest difference of the user in different geographical/region that different CDN nodes are served to same video, the user in same region/region that same CDN node is served is not identical to the level of interest of different video yet, at this, the numeric representation of described access temperature Information Availability, also can represent by other modes.Preferably, described access temperature information includes but not limited to following at least any one: 1) described video is at the corresponding visiting frequency information of zones of different and/or access duration information; 2) described video is at corresponding visiting frequency information of the different periods of same area and/or access duration information.At this, described region comprises the region of being served as region, CDN node.

Those skilled in the art will be understood that above-mentioned access temperature information and expression mode thereof are only for giving an example; other access temperature information existing or that may occur from now on and expression mode thereof are as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

At this, temperature determining device 11 determines that the mode of the access temperature information of video includes but not limited to following at least any one:

1), according to the video access daily record of video, determine the access temperature information of video.For example, suppose for video video1, first temperature determining device 11 passes through video website, the application programming interfaces (API) that the third party devices such as video playback client provide, obtain the video access daily record log-video1 of video video1, suppose that current content distributing network has CDN Beijing node as current CDN, CDN Shanghai node, CDN Zhangjiajie node, CDN Guangzhou node, CDN Zhengzhou node, CDN Lhasa node, the overseas node of CDN, CDN Tianjin node etc., and in this video access daily record log-video1 within November, 2013 (totally 30 days) as shown in table 1 below about the visit data of video video1, at this, for a video, if should provide this video by a CDN node, but because a CDN node does not have corresponding video content, finally jump to the 2nd CDN node this video is provided, provide the behavior of this video to be considered as providing this video by a CDN node by the 2nd CDN node:

Table 1

Temperature determining device 11 can be according to the visit data shown in above-mentioned table 1, total access times by video video1 in each region, or, video video1 corresponding visiting frequency and each user in each region are accessed to the summation of duration and video video1 duration ratio, or, using the two and as in this region, the corresponding access temperature of video video1 information, obtain the access temperature information of video video1 in corresponding region, wherein, the numeric representation of described access temperature Information Availability, the access temperature Information Availability shape of video video1 in corresponding region is as the function representation of s=α * x+ β * y, wherein, s represents the access temperature information of video video1 in corresponding region, x variable represents the total access times of video video1 in each region, y variable represents that each user accesses the summation of duration and video video1 duration ratio, it is the summation that the total access times+β * each user of s=α * video video1 in each region accesses duration and video video1 duration ratio, wherein, α, β is respectively the coefficient of variable x and y, α and β can be scheduled to, also can be to obtain by machine learning method, in the time of α=β=1, obtain the corresponding access temperature of video video1 information as shown in the following Table 2:

Table 2

Similarly, temperature determining device 11 can be according to other videos as the video access daily record log-video2 of video video2, obtain video video2 within November, 2013 (totally 30 days) access temperature information as shown in the following Table 3:

Table 3

2) according to the reference video corresponding with video, determine the access temperature information of described video, as using as described in reference video temperature visit information as described in the access temperature information of video.At this, described reference video include but not limited to as: i) with as described in video belong to the video of same video type, at this, described video type comprises as video type such as amusement, history, war, families; Ii) belong to the video of homologous series video with described video, relatively independent paragraph, part in movie and television film as longer in length, as above next part etc., or, video by stages, the video in point season etc.For example, suppose for new video video3, its video type is consistent with the video type of video video1, as be epic, temperature determining device 11 can be according to the video video1 shown in above-mentioned table 2 the access temperature information in zones of different, as the access temperature information at respective regions of video video3.At this, the present invention is by reference to the access temperature information of the new video of the access temperature information prediction of video, thereby can realize when the resource of this new video is carried out to CDN node deployment, can be according to the access temperature information of prediction, be deployed in and had on the higher corresponding CDN node of access temperature information, thereby optimize the distribution of video resource, as for video video3, the present invention can back up to video video3 to be had on the higher corresponding CDN of access temperature information Beijing node.

3) temperature determining device 11 also can, according to the access related information about described video in the corresponding video access daily record of video, be determined the access temperature information of described video.Preferably, described access related information comprises following at least any one:

Vision operation and the corresponding video duration of this vision operation that-user carries out described video in the process of the described video of access;

The visiting frequency information of-user to described video.

For example, in the time that described access related information comprises the vision operation that carries out described video in the process of the described video of access at family and the corresponding video duration of this vision operation, at this, described vision operation includes but not limited to as broadcasting, F.F., retreats, resets, time-out etc., user has been reflected the level of interest difference of user to video in the different video operation of video access process

As not too interested in this video in dragged forward video and F.F. video reflection user, drag backward video and rewind down and reflect the replay wish of video of user, it is possible interested in this video.Now, the vision operation that temperature determining device 11 can be carried out described video according to user in the corresponding video access daily record of video in the process of the described video of access, and the corresponding video duration of this vision operation, in conjunction with the corresponding weight information of this vision operation, the access temperature information of described video is determined in weighting, as calculated according to following formula (1):

$H_{\mathrm{video}}=\left[\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\underset{j=1}{\overset{m}{\mathrm{\Σ}}}(\frac{-\mathrm{\α}*t_{j,\mathrm{drag}-\mathrm{forward}}+\mathrm{\β}*t_{j,\mathrm{drag}-\mathrm{backward}}-\mathrm{\γ}*t_{j,\mathrm{fast}-\mathrm{forward}}+\mathrm{\τ}*t_{j,\mathrm{fast}-\mathrm{backforward}}}{T_{\mathrm{vi}}}+1)\right]/n---\left(1\right)$

Wherein, α, β, γ, τ represent respectively to drag forward video, drag video, F.F., the corresponding weight of rewind down vision operation backward, its numerical values recited scope be [0,1), and different video to operate corresponding weight sum be 1, t _{j, drag-forward}represent that user j carries out the duration of the video that drags while dragging vision operation forward, t _{j, drag-backward}represent that user j carries out the duration of the video that drags while dragging vision operation backward, t _{j, fast-forward}represent that user j carries out the video duration of F.F. vision operation time institute F.F., t _{j, fast-backforward}represent, user j carries out the video duration of rewind down vision operation time institute rewind down, T _virepresent that i the sub-video of video video is (as for video video, can there is n sub-video in it, as there are the TV series of many collection videos) video duration, as a certain collection of TV play etc., m represents number of users, when user watches in the process of video video, if there is no vision operation, start to be played to video from video always and finish, corresponding video access temperature information can be expressed as " 1 ".At this, different video operates corresponding weight information and can be scheduled to, and as α=0.1, β=0.25, γ=0.15, τ=0.5, also can obtain by machine learning.

For example, for video video1, in the time determining the access temperature information of this video correspondence in the region of being served by CDN Beijing node, suppose that video video1 is the TV series with 20 collection, every video duration that integrates is as 40min, temperature determining device 11 can according to above-mentioned formula (1) calculate video video1 in the region of being served by CDN Beijing node corresponding access temperature information as:

$\begin{array}{c}{H}_{\mathrm{videol}-\mathrm{CDNbj}}\\ =\left[\underset{i=1}{\overset{20}{\mathrm{\Σ}}}\underset{j=1}{\overset{500}{\mathrm{\Σ}}}(\frac{-\mathrm{\α}*t_{j,\mathrm{drag}-\mathrm{forward}}+\mathrm{\β}*t_{j,\mathrm{drag}-\mathrm{backward}}-\mathrm{\γ}*t_{j,\mathrm{fast}-\mathrm{forward}}+\mathrm{\τ}*t_{j,\mathrm{fast}-\mathrm{backforward}}}{T_{\mathrm{vi}}}+1)\right]/20\\ =4200\end{array}$

At this, those skilled in the art will be understood that above-mentioned formula (1) can be expanded when user is in video access process when the expansion of performed vision operation.

For another example, in the time that described access related information comprises user to the visiting frequency information of described video, for example, for video video1, in the time determining the access temperature information of this video correspondence in the region of being served by CDN Beijing node, temperature determining device 11 can according in the video access daily record log-video1 of the video video1 shown in above-mentioned table 1 within November, 2013 (totally 30 days) about the visit data of video video1, using the visiting frequency information of video video1 as video video1 in the region of being served by CDN Beijing node corresponding access temperature information, obtain H _video1-CDNbj=230/3.

Those skilled in the art will be understood that the mode of the access temperature information of above-mentioned definite video is only for example; the mode of the access temperature information of other definite videos existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Then, information determining device 12 is according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding, as long as thering is video that at least one region corresponding access temperature information meets predetermined threshold as treating prestrain video in the corresponding access temperature information of multiple regions, and using all CDN nodes of serving the region that described access temperature information meets predetermined threshold in described content distributing network as described prestrain node, or, to in described content distributing network, meet the nearest CDN node of the CDN nodal distance in region of predetermined threshold as described prestrain node with described access temperature information.At this, described preload information which the CDN node prestrain access temperature information in described content distributing network of having indicated meets the video of predetermined threshold.For example, for video video1 and video video2, temperature determining device 11 obtains the video video1 as shown in Table 2 above access temperature information in zones of different, and the video video2 as shown in Table 3 above access temperature information in zones of different, information determining device 12 can be according to this access temperature information, determine corresponding preload information, as first using have access temperature meet predetermined threshold as 4000 video video1 as described in treat prestrain video, because of the access temperature information of video video2 in regional all lower, therefore, video video2 is as treating prestrain video, then, information determining device 12 determine in described content distributing network with described in treat the prestrain node that prestrain video is corresponding, because video video1 has higher access temperature information in region corresponding to node, CDN Beijing, suppose to have backed up video video1 in the node of CDN Beijing, but the node capacity of current C DN Beijing node is not enough to meet the requirements for access of its service area intra domain user to video video1, and current content distributing network is as nearest in the node path between Tianjin node in current CDN and CDN Beijing node, and there is larger overlapping service range with CDN Beijing node, information determining device 12 can be using CDN Tianjin node as described prestrain node, for another example, suppose not back up video video1 in the node of CDN Beijing, because the corresponding access temperature of CDN Beijing node information is the highest, information determining device 12 can be using CDN Beijing node as described prestrain node.Also as, for treating prestrain video video3, because it does not back up as any node in currentCDN at current content distributing network, and temperature determining device 11 determines that the access temperature information of video video3 is consistent in the access temperature information of zones of different with the video video1 shown in above-mentioned table 2, be that temperature determining device 11 is estimated video video3 and had higher access temperature information at CDN Beijing node, information determining device 12 can be using CDN Beijing node as the prestrain node corresponding with video video3.

Those skilled in the art will be understood that the mode of the preload information of above-mentioned definite correspondence is only for example; the mode of the preload information of other definite correspondences existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Charger 13, according to described preload information, is treated prestrain video described in loading on described prestrain node, on described prestrain node, described in backup, treats prestrain video.For example, for video video1, information determining device 12 determines that it is treats prestrain video, and corresponding prestrain node is CDN Tianjin node, charger 13 can load video video1 on the node of CDN Tianjin, as video video1 being loaded on to CDN Tianjin node by the node that stores video video1.

Preferably, prestrain equipment 1 also comprises pretreatment unit (not shown).Particularly, pretreatment unit carries out preliminary treatment to described prestrain node, as the lower video copy of access temperature of storing on prestrain node as described in deleting; Then, charger 13, according to described preload information, loads described prestrain video on pretreated described prestrain node.

For example, for video video1, information determining device 12 determines that it is treats prestrain video, and corresponding prestrain node is CDN Tianjin node, suppose that CDN Tianjin node also stores other videos as video video2, video3 and video4, but video video4 is 500 in the access temperature information of CDN Tianjin node institute corresponding region, is less than predetermined threshold as 1500, illustrate that it is cold video, pretreatment unit can be deleted the copy of the video video4 storing on the node of CDN Tianjin; Then, charger 13 loads video video1 on the node of CDN Tianjin.At this, before treating prestrain video described in the present invention loads on described prestrain node, first described prestrain node is carried out to preliminary treatment, with the few video of visit capacity of storing on prestrain node described in periodic cleaning, vacate memory space and deposit the higher video of access temperature, thereby realize in the case of the limited storage space of the corresponding machine room server of CDN node, optimized the beneficial effect of the video storage of CDN node.

Preferably, pretreatment unit also can be in conjunction with the corresponding disk remaining space of described prestrain node, described prestrain node is carried out to preliminary treatment, as when as described in the corresponding disk remaining space of prestrain node while being less than predetermined threshold as nG, according to access temperature information order from low to high, delete successively the corresponding video of storing on described prestrain node, until the corresponding disk remaining space of described prestrain node is greater than mG, wherein m>n.For example, for video video1, information determining device 12 determines that it is treats prestrain video, and corresponding prestrain node is CDN Tianjin node, suppose that CDN Tianjin node also stores other videos as video video2, video3 and video4, but video video2, video3 and video4 are followed successively by 800 in the access temperature information of CDN Tianjin node institute corresponding region, 1000, 500, all be less than predetermined threshold as 1500, video video2 is described, video3 and video4 are cold video, suppose that now node corresponding disk remaining space in CDN Tianjin is less than predetermined threshold nG, first pretreatment unit can delete the minimum video video4 of access temperature information storing on the node of CDN Tianjin, and then delete the video video2 that the access temperature of storing on CDN Tianjin node is taken second place, the like, until node corresponding disk remaining space in CDN Tianjin is greater than mG.

Preferably, pretreatment unit delete video copy time, also can consider that cold video has a video copy at least in a CDN node region, if need the video of deleting to only have a video copy at this CDN node region on corresponding one of them server of CDN node region, this video copy can be moved in this CDN node region on other servers.

Those skilled in the art will be understood that in specific embodiment, and pretreatment unit and charger 13 can be modules independently, can be also integrated modules.

Those skilled in the art will be understood that and above-mentioned described prestrain node carried out to pretreated mode only for for example; other existing or may occur from now on described prestrain node is carried out to pretreated mode as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Between each device of prestrain equipment 1, be constant work.Particularly, temperature determining device 11 continues to determine the access temperature information of video; Information determining device 12 continues according to described access temperature information, determines corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding; Charger 13 continues according to described preload information, described in loading, treats prestrain video on described prestrain node.At this, those skilled in the art will be understood that described " continuing " refers to and between each device of prestrain equipment 1, constantly carry out respectively the determining of access temperature information of video, the loading of determining and treat prestrain video of preload information, until prestrain equipment 1 stops the access temperature information of definite video in a long time.

Preferably, information determining device 12 also can be according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video, described content distributing network with described in treat the prestrain node that prestrain video is corresponding, and described in treat the prestrain copy amount information of prestrain video; Wherein, charger 13 is according to described preload information, loads described in corresponding with described prestrain copy amount information and treat prestrain video on described prestrain node.

Particularly, information determining device 12 also can be according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video, described content distributing network with described in treat the prestrain node that prestrain video is corresponding, and described in treat the prestrain copy amount information of prestrain video.At this, described prestrain copy amount information refers to the quantity that backs up described prestrain video in the corresponding server of described prestrain node.

At this, information determining device 12 determines that the mode of described video to be loaded and described prestrain node is identical or basic identical with the mode of aforementioned information determining device 12 definite described videos to be loaded and described prestrain node, for simplicity's sake, therefore do not repeat them here, and comprise by reference therewith.

At this, the only prestrain copy amount information of video to be loaded described in descriptive information determining device 12 how to confirms by way of example, for example, for video video1, information determining device 12 determines that it is treats prestrain video, and corresponding prestrain node is CDN Beijing node, suppose to have backed up video video1 in server that CDN Beijing node is corresponding, as backed up 500 parts, and the access times of the corresponding coverage of node, CDN Beijing to video video1 (can be average daily access times, monthly access times etc.) be 4300, the difference of the quantity of the video video1 having backed up in the server that information determining device 12 can be corresponding with CDN Beijing node using the access times of video video1 is as the prestrain copy amount information of video video1, the prestrain copy amount information that obtains video video1 is 4300-500=3800.

Preferably, information determining device 12 also can be according to the corresponding relation between the predetermined access times information for the treatment of prestrain video and corresponding prestrain copy amount information, determine the prestrain copy amount information of described video to be loaded, for example, for video video1, information determining device 12 determines that it is treats prestrain video, and corresponding prestrain node is CDN Beijing node, and the access times of the corresponding coverage of node, CDN Beijing to video video1 (can be average daily access times, monthly access times etc.) be greater than 2w, suppose the predetermined access times information until prestrain video and the corresponding relation between corresponding prestrain copy amount information be access times while being greater than 2w corresponding prestrain copy amount be 7, it is 6 etc. that access times are greater than prestrain copy amount corresponding in the time of 1.5w-2w, information determining device 12 can determine that the prestrain copy amount information of video video1 is 7.

Those skilled in the art will be understood that the mode of the above-mentioned prestrain copy amount information of determining described video to be loaded is only for giving an example; the mode of the prestrain copy amount information of other definite described videos to be loaded existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Then, charger 13 is according to described preload information, loads described in corresponding with described prestrain copy amount information and treat prestrain video on described prestrain node.Particularly, first charger 13 can determine the priority of the corresponding server of described prestrain node; , then according to described preload information and described priority, described in corresponding with described prestrain copy amount information, treat that prestrain video is loaded in the corresponding server of described prestrain node then.

Particularly, first charger 13 determines the priority of the corresponding server of described prestrain node, as according to as described in server at corresponding load information in rush hour, determine described priority, server priority as lower in load is higher.For example, connect example, for video video1, information determining device 12 determines that it is treats prestrain video, and corresponding prestrain node is CDN Beijing node, the prestrain copy amount information of video video1 is 3800, suppose that CDN Beijing node is made up of as server I to server V 5 servers, suppose server I to server V rush hour corresponding load information be followed successively by server I from low to high, server III, server II, server V, server IV, charger 13 determines that server I to the corresponding priority orders of server V is followed successively by server I, server III, server II, server V, server IV.

Those skilled in the art will be understood that the mode of the above-mentioned priority of determining the corresponding server of described prestrain node is only for giving an example; the mode of the priority of other existing or corresponding servers of definite described prestrain node that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Then, charger 13 is according to described preload information and described priority, described in corresponding with described prestrain copy amount information, treat that prestrain video is loaded in the corresponding server of described prestrain node, as in conjunction with as described in the device-dependent message of the corresponding server of prestrain node (as average speed of download, server disk space etc.), determine the maximum quantity for the treatment of prestrain video in corresponding server described in loading, when the task to be downloaded in described server exceed can add described in stop adding during until the number of prestrain video, until treat that prestrain video is loaded in the corresponding server of described prestrain node described in corresponding with described prestrain copy amount information.For example, connect example, charger 13 can be first according to server I to the device-dependent message of server V (as average speed of download, server disk space etc.), determine the maximum quantity that loads video video1 on each server, when the task to be downloaded in described server exceed can add described in stop adding during until the number of prestrain video, for example, supposing that charger 13 is determined at server I to the maximum quantity that loads video video1 in server V is followed successively by 2000, 1500, 800, 700, 500, charger 13 can be according to server I the priority order to server V, as server I, server III, server II, server V, server IV, in respective server, load successively video video1, in loading procedure, when the task to be downloaded in described server exceed can add described in stop adding during until the number of prestrain video, as the server I for thering is limit priority, its maximum quantity that can load video video1 is 2000, if but in loading procedure, as when load 1500 video video1 in server I time, task to be downloaded in server I exceedes the number 2000 of its video video1 that can add, now charger 13 stops at server I and stops adding video video1, then, charger 13 will load video video1 in the server III in inferior priority, the like, until by 3800 whole loadeds of video video1.

Those skilled in the art will be understood that and above-mentionedly will treat that prestrain video is loaded on mode in the corresponding server of described prestrain node only for for example described in corresponding with described prestrain copy amount information; other existing or may occur from now on will treat that prestrain video is loaded on mode in the corresponding server of described prestrain node as applicable to the present invention described in corresponding with described prestrain copy amount information; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Preferably, prestrain equipment 1 also comprises source and path determining device (not shown).Particularly, source and path determining device, according to described preload information, are determined the prestrain path for the treatment of the corresponding source node of prestrain video and correspondence described in described content distributing network; Wherein, charger 13, based on described prestrain path, treats that prestrain video be loaded on described prestrain node described in being incited somebody to action by described source node.

Particularly, source and path determining device are according to described preload information, determine the prestrain path for the treatment of the corresponding source node of prestrain video and correspondence described in described content distributing network, as using as described in as described in content distributing network middle distance prestrain node nearest store as described in treat prestrain video CDN node as described in source node, correspondingly, between described source node and described prestrain node, the shortest path of route is as described prestrain path, or, path fastest between described source node and described prestrain node is as described prestrain path, or using the Centroid server in described content distributing network as described source node, correspondingly, between just described source node and described prestrain node, the shortest path of route is as described prestrain path.For example, for video video1, it has higher access temperature information in region corresponding to node, CDN Beijing, suppose to have backed up video video1 in the node of CDN Beijing, but the node capacity of current C DN Beijing node is not enough to meet the requirements for access of its service range user to video video1, and current content distributing network is as nearest in the node path between Tianjin node in currentCDN and CDN Beijing node, there is larger overlapping service range with CDN Beijing node, and information determining device 12 determines that corresponding preload information comprises that video video1 is the corresponding prestrain video for the treatment of, and corresponding prestrain node is CDN Tianjin node, because CDN Beijing node in current content distributing network current CDN has backed up video video1, source and path determining device can be determined using CDN Beijing node as described source node, correspondingly, between described source node and described prestrain node, the shortest path of route is as described prestrain path, between CDN Beijing node and CDN Tianjin node, there are 2 paths path1 and path2 as supposed, wherein the connection line of path path1 passes through routing node as gone to CDN Tianjin node the node of CDN Langfang from CDN Beijing node, and the connection line of path path2 is by the through CDN of CDN Beijing node Tianjin node, source with path determining device can determine that path path2 is corresponding prestrain path.

Those skilled in the art will be understood that the above-mentioned mode of determining described source node and described prestrain path is only for giving an example; the mode in other definite described source nodes existing or that may occur from now on and described prestrain path is as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

More preferably, source and path determining device can be first according to described preload informations, determine and described in described content distributing network, treat the corresponding source node of prestrain video; Then, then according to described source node, determine rule in conjunction with predefined paths, described in determining, treat the corresponding prestrain of prestrain video path.Preferably, described predefined paths determines that rule comprises following at least any one:

-determine described prestrain path according to the link range between described source node and described prestrain node;

-determine described prestrain path according to the bandwidth between described source node and described prestrain node;

-determine described prestrain path according to the post and telecommunication tariff between described source node and described prestrain node.

Particularly, source and path determining device can be first according to described preload informations, determine and described in described content distributing network, treat the corresponding source node of prestrain video, as first using as described in treat prestrain video as described in storing in content distributing network CDN node as described in treat the corresponding one or more candidate's source nodes of prestrain video; Then, then according to the node diagnostic information of described candidate's source node, from described one or more candidate's source nodes, select preferred candidate's source node, described in setting it as, treat the corresponding source node of prestrain video.At this, the node diagnostic information of described candidate's source node includes but not limited to as the node characteristic relevant information of candidate's source node 1), as node capacity, free memory, server load condition, outlet bandwidth etc.; 2) running state information of described candidate's source node, as whether fault etc. is moved, whether had to health; 3) the network speed information between described candidate's source node and described prestrain node.

For example, for video video1, it has higher access temperature information in region corresponding to node, CDN Beijing, suppose to have backed up video video1 in the node of CDN Beijing, but the node capacity of current C DN Beijing node is not enough to meet the requirements for access of its service range user to video video1, and current content distributing network is as nearest in the node path between Tianjin node in current CDN and CDN Beijing node, there is larger overlapping service range with CDN Beijing node, and information determining device 12 determines that corresponding preload information comprises that video video1 is the corresponding prestrain video for the treatment of, and corresponding prestrain node is CDN Tianjin node, suppose in current content distributing network current CDN except CDN Beijing node has backed up video video1, also exist with lower node as CDN1, CDN2, CDN3 backup has video video1, source and path determining device can be first by CDN Beijing nodes, and node CDN1, CDN2 and CDN3 are as the corresponding described candidate's source node of video video1, then, source and path determining device are again according to the node diagnostic information of described candidate's source node, from described one or more candidate's source nodes, select preferred candidate's source node, described in setting it as, treat the corresponding source node of prestrain video, for example, connect example, suppose that node CDN1 present load is fuller, the node characteristic relevant information of node CDN2, as node capacity, free memory, server load condition, the indexs such as outlet bandwidth are all comparatively excellent, but and prestrain node is that connection line between the node of CDN Tianjin is than the connecting line great distance between CDN Beijing node and CDN Tianjin node, but CDN Beijing node because of present load fuller, its outlet bandwidth is very narrow, source and path determining device can determine that node CDN2 is as preferred source node.

Those skilled in the art will be understood that the above-mentioned mode of determining described candidate's source node is only for giving an example; the mode of other existing or definite described candidate's source nodes that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Then, source and path determining device, again according to described source node, are determined rule in conjunction with predefined paths, described in determining, treat the corresponding prestrain of prestrain video path.For example, connect example, suppose that source node is that node CDN2 and prestrain node are to exist 2 paths as path1 ' and path2 ' between the node of CDN Tianjin, wherein the bandwidth between path path1 ' and CDN Tianjin node is lower than the bandwidth between path path2 ' and CDN Tianjin node, source with path determining device can determine that path path1 ' is for corresponding prestrain path.

Then, charger 13, based on described prestrain path, treats that prestrain video be loaded on described prestrain node described in being incited somebody to action by described source node.For example, connect example, charger 13 is path path2 ' based on described prestrain path, by node CDN2, video video1 is loaded on to CDN Tianjin node, on the node of CDN Tianjin, backs up video video1.

Preferably, prestrain equipment 1 also comprises delete device (not shown).Particularly, delete device is according to described access temperature information, determines corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete.

Particularly, delete device is according to described access temperature information, determine corresponding pre-deletion video, as using as described in access in each node is stored in content distributing network video video that temperature information is less than predetermined threshold as described in pre-deletion video, or using the video of accessing temperature information minimum in the video that in described content distributing network, each node is stored as described pre-deletion video.For example, for current content distributing network current CDN, in its CDN Beijing node, store video as video1 to video5, suppose that the access temperature information of a video in temperature determining device 11 definite CDN Beijing nodes is as shown in table 4 below:

The video of CDN Beijing node storage	Access temperature information
		video1	4300
video2	1500
		video3	2800
video4	500
		video5	1000

Table 4

Delete device can determine in the node of CDN Beijing, access temperature information lower than the video of predetermined threshold 2000 as described pre-deletion video, obtaining corresponding pre-deletion video is video2, video4 and video5; Or delete device can be according to accessing temperature information in the node of CDN Beijing, the video of access temperature information minimum is as described pre-deletion video, and obtaining corresponding pre-deletion video is video4.

Then, delete device by described pre-deletion video the corresponding node from described content distributing network delete.At this, the delete device mode that the corresponding node from described content distributing network is deleted by described pre-deletion video includes but not limited to following at least any one:

1) reduce the copy amount of the described pre-deletion video of storing in the corresponding node in described content distributing network.For example, connect example, delete device can reduce the pre-deletion video video2, the video4 that on the node of CDN Beijing, store and the copy amount of video5, as the copy of video video2 is reduced to 300 by 500, the copy of video video4 is reduced to 50 by 100, the copy of video5 is reduced to 500 by 800.At this, the present invention is by reducing the copy amount of the described pre-deletion video of storing in the corresponding node in described content distributing network, discharged the memory space of the server that this node is corresponding, can be used for the higher video of memory access temperature information.

2) by described pre-deletion video, the corresponding node from described content distributing network is deleted, until there is the copy of a described pre-deletion video at the most in the corresponding node in described content distributing network.For example, also connect example, delete device can be deleted whole copies of deleting in advance video video2, video4 and video5 from CDN Beijing node of current content distributing network current CDN, only retain each video video2, a video4 and video5.

Preferably, delete device also can move to retained described pre-deletion video on corresponding other servers of CDN Beijing node from current server, distributes with the video resource of optimizing between the corresponding server of CDN Beijing node.

Preferably, delete device also can be according to the access temperature information of the video that in described content distributing network, each node is stored, according to access temperature information order from low to high, successively using corresponding video as described pre-deletion video, until the disk space of the corresponding server of corresponding content distributing network node meets predetermined threshold.

Preferably, the present invention can be when when the Insufficient disk space of the corresponding server of content delivery network node, just trigger delete device according to described access temperature information, determine corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete.

Those skilled in the art will be understood that the above-mentioned mode that corresponding node from described content distributing network is deleted by described pre-deletion video is only for giving an example; other existing or modes that the corresponding node from described content distributing network is deleted by described pre-deletion video that may occur are from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Those skilled in the art will be understood that in specific embodiment, and delete device and information determining device 12 can be the execution of serial, can be also the execution walking abreast; Delete device and charger 13 can be the execution of serial, also can be the execution walking abreast, be that the present invention can be before determining corresponding preload information or after determining corresponding preload information, can determine corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete; Or, the present invention can be before treating that prestrain video is loaded on described prestrain node described in inciting somebody to action, or after treating that prestrain video is loaded on described prestrain node described in inciting somebody to action, can determine corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete, thereby the present invention can delete the lower video of access temperature in real time, realize the beneficial effect of the video storage of optimizing CDN node.

Fig. 2 illustrates in accordance with a preferred embodiment of the present invention a kind of for the equipment schematic diagram at content distributing network prestrain video, wherein, prestrain equipment 1 comprises temperature determining device 11 ', information determining device 12 ' and charger 13 ', wherein, information determining device 12 ' comprises video determining unit 121 ', both candidate nodes determining unit 122 ' and preferred node determination unit 123 '.Particularly, temperature determining device 11 ' is determined the access temperature information of video; Video determining unit 121 ' is according to described access temperature information, determines the corresponding prestrain video for the treatment of; Both candidate nodes determining unit 122 ' is determined and described in described content distributing network, is treated the corresponding one or more candidate's prestrain nodes of prestrain video; Preferably node determination unit 123 ' is according to the node diagnostic information of described candidate's prestrain node, from described one or more candidate's prestrain nodes determine with described in treat the preferred prestrain node that prestrain video is corresponding, to treat that by described prestrain video and described preferred prestrain node are as corresponding preload information; Charger 13 ', according to described preload information, is treated prestrain video described in loading on described prestrain node.At this, temperature determining device 11 ' is identical or basic identical with the content of the corresponding intrument in Fig. 1 embodiment with charger 13 ', for simplicity's sake, thus do not repeat them here, and comprise by reference therewith.

Particularly, video determining unit 121 ' is according to described access temperature information, determines the corresponding prestrain video for the treatment of.At this, the definite corresponding mode for the treatment of prestrain video of video determining unit 121 ' treats that the mode of prestrain video is identical or basic identical described in determining with information determining device in Fig. 1 12, for simplicity's sake, thus do not repeat them here, and comprise by reference therewith.

Both candidate nodes determining unit 122 ' is determined and described in described content distributing network, is treated the corresponding one or more candidate's prestrain nodes of prestrain video.At this, both candidate nodes determining unit 122 ' determines that the mode of described candidate's prestrain node includes but not limited to following at least any one:

1) play in record in the described history for the treatment of prestrain video according to user, select record about the history of the loading node in described content distributing network, described in determining, treat the corresponding one or more candidate's prestrain nodes of prestrain video.For example, for treating that prestrain video is as video video1, because it has higher access temperature information in the corresponding region of node, CDN Beijing, therefore, need to determine the corresponding prestrain node of video video1, to meet the broadcasting demand of Beijing area user to video video1, suppose that multiple users in Beijing area are in the playing process of video video1, because of network speed, the restrictions such as bandwidth, when appearance video playback is not smooth, user more selects node as CDN Tianjin node, CDN Shijiazhuang node etc. carries out the broadcasting of video video1, both candidate nodes determining unit 122 ' can be selected record according to user's the history about the loading node in described content distributing network, by Beijing area user compared with the node of more options as CDN Tianjin node, CDN Shijiazhuang node is as candidate's prestrain node of video video1.

2) based on the corresponding network topology structure of described content distributing network, determine the corresponding one or more candidate's prestrain nodes of described video to be loaded, as treated that prestrain video has one or more content delivery network nodes in the region of higher access temperature information as described in serving, the corresponding one or more candidate's prestrain nodes of described video to be loaded.For example, for treating that prestrain video is as video video1, because it has higher access temperature information in the corresponding region of node, CDN Beijing, therefore, need to determine the corresponding prestrain node of video video1, to meet the broadcasting demand of Beijing area user to video video1, suppose to exist CDN Beijing node of the higher access temperature information of having of multiple CDN nodes and video video1 to there is larger overlapping service range in current content distributing network current CDN, as CDN4, CDN5, CDN6, CDN Tianjin node etc., both candidate nodes determining unit 122 ' can have the node of larger overlapping service range as candidate's prestrain node of video video1 with CDN Beijing node using the plurality of.

Those skilled in the art will be understood that the above-mentioned mode of determining described candidate's prestrain node is only for giving an example; the mode of other definite described candidate's prestrain nodes existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Preferably node determination unit 123 ' is according to the node diagnostic information of described candidate's prestrain node, from described one or more candidate's prestrain nodes determine with described in treat the preferred prestrain node that prestrain video is corresponding, to treat that by described prestrain video and described preferred prestrain node are as corresponding preload information.At this, the node diagnostic information of described candidate's prestrain node includes but not limited to as the node characteristic relevant information of candidate's prestrain node 1), as node capacity, free memory, server load condition, outlet bandwidth etc.; 2) running state information of described candidate's prestrain node, as whether fault etc. is moved, whether had to health.

For example, connect example, both candidate nodes determining unit 122 ' determine treat prestrain video as candidate's prestrain node of video video1 be CDN4, CDN5, CDN6, CDN Tianjin node, suppose that node CDN4 and node CDN5 present load are fuller, the node characteristic relevant information of node CDN6, as node capacity, free memory, server load condition, the indexs such as outlet bandwidth are all inferior to CDN Tianjin node, preferably node determination unit 123 ' can be using CDN Tianjin node as the preferred prestrain node corresponding with video video1, being that CDN Tianjin node is as corresponding preload information by video video1 and described preferred prestrain node.

Those skilled in the art will be understood that the above-mentioned mode for the treatment of the corresponding preferred prestrain node of prestrain video described in determining is only for for example; other existing or determining of may occurring from now on described in treat the corresponding preferred prestrain node of prestrain video mode as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Fig. 3 illustrates according to a further aspect of the present invention a kind of for the method flow diagram at content distributing network prestrain video.

At this, described content distributing network comprises multiple CDN nodes, and it serves the user of different geographical and/or region that it is served has juxtaposition, and the user who is areal as multiple CDN nodes provides service.Particularly, in step S1, prestrain equipment 1 is determined the access temperature information of video; In step S2, prestrain equipment 1 is according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding; In step S3, prestrain equipment 1, according to described preload information, is treated prestrain video described in loading on described prestrain node.At this, described prestrain equipment 1 can be by the network equipment as realizations such as network host, single network server, multiple webserver collection or the set of computers based on cloud computing.At this, cloud is made up of a large amount of main frames based on cloud computing (CloudComputing) or the webserver, and wherein, cloud computing is the one of Distributed Calculation, the super virtual machine being made up of the loosely-coupled computer collection of a group.Those skilled in the art will be understood that above-mentioned prestrain equipment 1 is only for giving an example, and other prestrain equipment 1 existing or that may occur from now on, as applicable to the present invention, also should be included in protection range of the present invention, and be contained in this at this with way of reference.At this, prestrain equipment 1 comprise a kind of can be according to the instruction of prior setting or storage, automatically carry out the electronic equipment of numerical computations and information processing, its hardware includes but not limited to microprocessor, application-specific integrated circuit (ASIC) (ASIC), programmable gate array (FPGA), digital processing unit (DSP), embedded device etc.

Particularly, in step S1, prestrain equipment 1 is determined the access temperature information of video.At this, described access temperature message reflection the level of interest of user to video, the level of interest difference of the user in different geographical/region that different CDN nodes are served to same video, the user in same region/region that same CDN node is served is not identical to the level of interest of different video yet, at this, the numeric representation of described access temperature Information Availability, also can represent by other modes.Preferably, described access temperature information includes but not limited to following at least any one: 1) described video is at the corresponding visiting frequency information of zones of different and/or access duration information; 2) described video is at corresponding visiting frequency information of the different periods of same area and/or access duration information.At this, described region comprises the region of being served as region, CDN node.

Those skilled in the art will be understood that above-mentioned access temperature information and expression mode thereof are only for giving an example; other access temperature information existing or that may occur from now on and expression mode thereof are as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

At this, in step S1, prestrain equipment 1 determines that the mode of the access temperature information of video includes but not limited to following at least any one:

1), according to the video access daily record of video, determine the access temperature information of video.For example, suppose for video video1, in step S1, first prestrain equipment 1 pass through video website, the application programming interfaces (API) that the third party devices such as video playback client provide, obtain the video access daily record log-video1 of video video1, suppose that current content distributing network has CDN Beijing node as current CDN, CDN Shanghai node, CDN Zhangjiajie node, CDN Guangzhou node, CDN Zhengzhou node, CDN Lhasa node, the overseas node of CDN, CDN Tianjin node etc., and in this video access daily record log-video1 within November, 2013 (totally 30 days) as shown in table 5 below about the visit data of video video1, at this, for a video, if should provide this video by a CDN node, but because a CDN node does not have corresponding video content, finally jump to the 2nd CDN node this video is provided, provide the behavior of this video to be considered as providing this video by a CDN node by the 2nd CDN node:

Table 5

In step S1, prestrain equipment 1 can be according to the visit data shown in above-mentioned table 5, total access times by video video1 in each region, or, video video1 corresponding visiting frequency and each user in each region are accessed to the summation of duration and video video1 duration ratio, or, using the two and as in this region, the corresponding access temperature of video video1 information, obtain the access temperature information of video video1 in corresponding region, wherein, the numeric representation of described access temperature information, the access temperature Information Availability shape of video video1 in corresponding region is as the function representation of s=α * x+ β * y, wherein, s represents the access temperature information of video video1 in corresponding region, x variable represents the total access times of video video1 in each region, y variable represents that each user accesses the summation of duration and video video1 duration ratio, it is the summation that the total access times+β * each user of s=α * video video1 in each region accesses duration and video video1 duration ratio, wherein, α, β is respectively the coefficient of variable x and y, α and β can be scheduled to, also can be to obtain by machine learning method, in the time of α=β=1, obtain the corresponding access temperature of video video1 information as shown in the following Table 6:

Table 6

Similarly, in step S1, prestrain equipment 1 can be according to other videos as the video access daily record log-video2 of video video2, obtain video video2 within November, 2013 (totally 30 days) access temperature information as shown in the following Table 7:

Table 7

2) according to the reference video corresponding with video, determine the access temperature information of described video, as using as described in reference video temperature visit information as described in the access temperature information of video.At this, described reference video include but not limited to as: i) with as described in video belong to the video of same video type, at this, described video type comprises as video type such as amusement, history, war, families; Ii) belong to the video of homologous series video with described video, relatively independent paragraph, part in movie and television film as longer in length, as above next part etc., or, video by stages, the video in point season etc.For example, suppose for new video video3, its video type is consistent with the video type of video video1, as be epic, in step S1, prestrain equipment 1 can be according to the video video1 shown in above-mentioned table 2 the access temperature information in zones of different, as the access temperature information at respective regions of video video3.At this, the present invention is by reference to the access temperature information of the new video of the access temperature information prediction of video, thereby can realize when the resource of this new video is carried out to CDN node deployment, can be according to the access temperature information of prediction, be deployed in and had on the higher corresponding CDN node of access temperature information, thereby optimize the distribution of video resource, as for video video3, the present invention can back up to video video3 to be had on the higher corresponding CDN of access temperature information Beijing node.

3), in step S1, prestrain equipment 1 also can, according to the access related information about described video in the corresponding video access daily record of video, be determined the access temperature information of described video.Preferably, described access related information comprises following at least any one:

Vision operation and the corresponding video duration of this vision operation that-user carries out described video in the process of the described video of access;

The visiting frequency information of-user to described video.

For example, in the time that described access related information comprises the vision operation that carries out described video in the process of the described video of access at family and the corresponding video duration of this vision operation, at this, described vision operation includes but not limited to as play, F.F., retreat, reset, suspend etc., user has been reflected the level of interest difference of user to video in the different video operation of video access process, reflect that as dragged forward video and F.F. video user is not too interested in this video, drag backward video and rewind down and reflect the replay wish of video of user, it may be interested in this video.Now, in step S1, the vision operation that prestrain equipment 1 can be carried out described video according to user in the corresponding video access daily record of video in the process of the described video of access, and the corresponding video duration of this vision operation, in conjunction with the corresponding weight information of this vision operation, the access temperature information of described video is determined in weighting, as calculated according to following formula (2):

$H_{\mathrm{video}}=\left[\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\underset{j=1}{\overset{m}{\mathrm{\Σ}}}(\frac{-\mathrm{\α}*t_{j,\mathrm{drag}-\mathrm{forward}}+\mathrm{\β}*t_{j,\mathrm{drag}-\mathrm{backward}}-\mathrm{\γ}*t_{j,\mathrm{fast}-\mathrm{forward}}+\mathrm{\τ}*t_{j,\mathrm{fast}-\mathrm{backforward}}}{T_{\mathrm{vi}}}+1)\right]/n---\left(1\right)$

Wherein, α, β, γ, τ represent respectively to drag forward video, drag video, F.F., the corresponding weight of rewind down vision operation backward, its numerical values recited scope be [0,1), and different video to operate corresponding weight sum be 1, t _{j, drag-forward}represent that user j carries out the duration of the video that drags while dragging vision operation forward, t _{j, drag-backward}represent that user j carries out the duration of the video that drags while dragging vision operation backward, t _{j, fast-forward}represent that user j carries out the video duration of F.F. vision operation time institute F.F., t _{j, fast-backforward}represent, user j carries out the video duration of rewind down vision operation time institute rewind down, T _virepresent that i the sub-video of video video is (as for video video, can there is n sub-video in it, as there are the TV series of many collection videos) video duration, as a certain collection of TV play etc., m represents number of users, when user watches in the process of video video, if there is no vision operation, start to be played to video from video always and finish, corresponding video access temperature information can be expressed as " 1 ".At this, different video operates corresponding weight information and can be scheduled to, and as α=0.1, β=0.25, γ=0.15, τ=0.5, also can obtain by machine learning.

For example, for video video1, in the time determining the access temperature information of this video correspondence in the region of being served by CDN Beijing node, suppose that video video1 is the TV series with 20 collection, every video duration that integrates is as 40min, in step S1, prestrain equipment 1 can according to above-mentioned formula (2) calculate video video1 in the region of being served by CDN Beijing node corresponding access temperature information as:

$\begin{array}{c}{H}_{\mathrm{videol}-\mathrm{CDNbj}}\\ =\left[\underset{i=1}{\overset{20}{\mathrm{\Σ}}}\underset{j=1}{\overset{500}{\mathrm{\Σ}}}(\frac{-\mathrm{\α}*t_{j,\mathrm{drag}-\mathrm{forward}}+\mathrm{\β}*t_{j,\mathrm{drag}-\mathrm{backward}}-\mathrm{\γ}*t_{j,\mathrm{fast}-\mathrm{forward}}+\mathrm{\τ}*t_{j,\mathrm{fast}-\mathrm{backforward}}}{T_{\mathrm{vi}}}+1)\right]/20\\ =4200\end{array}$

At this, those skilled in the art will be understood that above-mentioned formula (2) can be expanded when user is in video access process when the expansion of performed vision operation.

For another example, in the time that described access related information comprises user to the visiting frequency information of described video, for example, for video video1, in the time determining the access temperature information of this video correspondence in the region of being served by CDN Beijing node, in step S1, prestrain equipment 1 can according in the video access daily record log-video1 of the video video1 shown in above-mentioned table 5 within November, 2013 (totally 30 days) about the visit data of video video1, using the visiting frequency information of video video1 as video video1 in the region of being served by CDN Beijing node corresponding access temperature information, obtain H _video1-CDNbj=230/3.

Those skilled in the art will be understood that the mode of the access temperature information of above-mentioned definite video is only for example; the mode of the access temperature information of other definite videos existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Then, in step S2, prestrain equipment 1 is according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding, as long as thering is video that at least one region corresponding access temperature information meets predetermined threshold as treating prestrain video in the corresponding access temperature information of multiple regions, and using all CDN nodes of serving the region that described access temperature information meets predetermined threshold in described content distributing network as described prestrain node, or, to in described content distributing network, meet the nearest CDN node of the CDN nodal distance in region of predetermined threshold as described prestrain node with described access temperature information.At this, described preload information which the CDN node prestrain access temperature information in described content distributing network of having indicated meets the video of predetermined threshold.For example, for video video1 and video video2, in step S1, prestrain equipment 1 obtains the video video1 as shown in Table 6 above access temperature information in zones of different, and the video video2 as shown in Table 7 above access temperature information in zones of different, in step S2, prestrain equipment 1 can be according to this access temperature information, determine corresponding preload information, as first using have access temperature meet predetermined threshold as 4000 video video1 as described in treat prestrain video, because of the access temperature information of video video2 in regional all lower, therefore, video video2 is as treating prestrain video, then, in step S2, prestrain equipment 1 determine in described content distributing network with described in treat the prestrain node that prestrain video is corresponding, because video video1 has higher access temperature information in region corresponding to node, CDN Beijing, suppose to have backed up video video1 in the node of CDN Beijing, but the node capacity of current C DN Beijing node is not enough to meet the requirements for access of its service area intra domain user to video video1, and current content distributing network is as nearest in the node path between Tianjin node in currentCDN and CDN Beijing node, and there is larger overlapping service range with CDN Beijing node, in step S2, prestrain equipment 1 can be using CDN Tianjin node as described prestrain node, for another example, suppose not back up video video1 in the node of CDN Beijing, because the corresponding access temperature of CDN Beijing node information is the highest,, in step S2, prestrain equipment 1 can be using CDN Beijing node as described prestrain node.Also as, for treating prestrain video video3, because it does not back up as any node in current CDN at current content distributing network, and in step S1, prestrain equipment 1 determines that the access temperature information of video video3 is consistent in the access temperature information of zones of different with the video video1 shown in above-mentioned table 6, in step S1, prestrain equipment 1 is estimated video video3 and is had higher access temperature information at CDN Beijing node,, in step S2, prestrain equipment 1 can be using CDN Beijing node as the prestrain node corresponding with video video3.

Those skilled in the art will be understood that the mode of the preload information of above-mentioned definite correspondence is only for example; the mode of the preload information of other definite correspondences existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

In step S3, prestrain equipment 1, according to described preload information, is treated prestrain video described in loading on described prestrain node, on described prestrain node, described in backup, treats prestrain video.For example, for video video1, in step S2, prestrain equipment 1 determines that it is treats prestrain video, and corresponding prestrain node is CDN Tianjin node,, in step S3, prestrain equipment 1 can load video video1 on the node of CDN Tianjin, as video video1 being loaded on to CDN Tianjin node by the node that stores video video1.

Preferably, the method also comprises that step S6(is not shown).Particularly, in step S6, prestrain equipment 1 carries out preliminary treatment to described prestrain node, as the access temperature of storing on prestrain node as described in the deleting video copy of telling somebody what one's real intentions are; Then,, in step S3, prestrain equipment 1, according to described preload information, loads described prestrain video on pretreated described prestrain node.For example, for video video1, in step S2, prestrain equipment 1 determines that it is treats prestrain video, and corresponding prestrain node is CDN Tianjin node, suppose that CDN Tianjin node also stores other videos as video video2, video3 and video4, but video video4 is 500 in the access temperature information of CDN Tianjin node institute corresponding region, be less than predetermined threshold as 1500, illustrate that it is cold video,, in step S6, prestrain equipment 1 can be deleted the copy of the video video4 storing on the node of CDN Tianjin; Then,, in step S3, prestrain equipment 1 loads video video1 on the node of CDN Tianjin.At this, before treating prestrain video described in the present invention loads on described prestrain node, first described prestrain node is carried out to preliminary treatment, with the few video of visit capacity of storing on prestrain node described in periodic cleaning, vacate memory space and deposit the higher video of access temperature, thereby realize in the case of the limited storage space of the corresponding machine room server of CDN node, optimized the beneficial effect of the video storage of CDN node.

Preferably, in step S6, prestrain equipment 1 also can be in conjunction with the corresponding disk remaining space of described prestrain node, described prestrain node is carried out to preliminary treatment, as when as described in the corresponding disk remaining space of prestrain node while being less than predetermined threshold as nG, according to access temperature information order from low to high, delete successively the corresponding video of storing on described prestrain node, until the corresponding disk remaining space of described prestrain node is greater than mG, wherein m>n.For example, for video video1, in step S2, prestrain equipment 1 determines that it is treats prestrain video, and corresponding prestrain node is CDN Tianjin node, suppose that CDN Tianjin node also stores other videos as video video2, video3 and video4, but video video2, video3 and video4 are followed successively by 800 in the access temperature information of CDN Tianjin node institute corresponding region, 1000, 500, all be less than predetermined threshold as 1500, video video2 is described, video3 and video4 are cold video, suppose that now node corresponding disk remaining space in CDN Tianjin is less than predetermined threshold nG, in step S6, first prestrain equipment 1 can delete the minimum video video4 of access temperature information storing on the node of CDN Tianjin, and then delete the video video2 that the access temperature of storing on CDN Tianjin node is taken second place, the like, until node corresponding disk remaining space in CDN Tianjin is greater than mG.

Preferably, in step S6, prestrain equipment 1 delete video copy time, also can consider that cold video has a video copy at least in a CDN node region, if need the video of deleting to only have a video copy at this CDN node region on corresponding one of them server of CDN node region, this video copy can be moved in this CDN node region on other servers.

Those skilled in the art will be understood that and above-mentioned described prestrain node carried out to pretreated mode only for for example; other existing or may occur from now on described prestrain node is carried out to pretreated mode as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Between each step of prestrain equipment 1, be constant work.Particularly, in step S1, prestrain equipment 1 continues to determine the access temperature information of video; In step S2, prestrain equipment 1 continues according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding; In step S3, prestrain equipment 1 continues according to described preload information, described in loading, treats prestrain video on described prestrain node.At this, those skilled in the art will be understood that described " continuing " refers to and between each step of prestrain equipment 1, constantly carry out respectively the determining of access temperature information of video, the loading of determining and treat prestrain video of preload information, until prestrain equipment 1 stops the access temperature information of definite video in a long time.

Preferably, in step S2, prestrain equipment 1 also can be according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video, described content distributing network with described in treat the prestrain node that prestrain video is corresponding, and described in treat the prestrain copy amount information of prestrain video; Wherein, in step S3, prestrain equipment 1 is according to described preload information, loads described in corresponding with described prestrain copy amount information and treat prestrain video on described prestrain node.

Particularly, in step S2, prestrain equipment 1 also can be according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video, described content distributing network with described in treat the prestrain node that prestrain video is corresponding, and described in treat the prestrain copy amount information of prestrain video.At this, described prestrain copy amount information refers to the quantity that backs up described prestrain video in the corresponding server of described prestrain node.

At this, in step S2, prestrain equipment 1 determines that the mode of described video to be loaded and described prestrain node is identical or basic identical with the aforementioned mode that it determines described video to be loaded and described prestrain node in step S2, for simplicity's sake, therefore do not repeat them here, and comprise by reference therewith.

At this, only illustrate by way of example in step S2, the prestrain copy amount information of video to be loaded described in prestrain equipment 1 how to confirm, for example, for video video1, in step S2, prestrain equipment 1 determines that it is treats prestrain video, and corresponding prestrain node is CDN Beijing node, suppose to have backed up video video1 in server that CDN Beijing node is corresponding, as backed up 500 parts, and the access times of the corresponding coverage of node, CDN Beijing to video video1 (can be average daily access times, monthly access times etc.) be 4300, in step S2, the difference of the quantity of the video video1 having backed up in the server that prestrain equipment 1 can be corresponding with CDN Beijing node using the access times of video video1 is as the prestrain copy amount information of video video1, the prestrain copy amount information that obtains video video1 is 4300-500=3800.

Preferably, in step S2, prestrain equipment 1 also can be according to the corresponding relation between the predetermined access times information for the treatment of prestrain video and corresponding prestrain copy amount information, determine the prestrain copy amount information of described video to be loaded, for example, for video video1, in step S2, prestrain equipment 1 determines that it is treats prestrain video, and corresponding prestrain node is CDN Beijing node, and the access times of the corresponding coverage of node, CDN Beijing to video video1 (can be average daily access times, monthly access times etc.) be greater than 2w, suppose the predetermined access times information until prestrain video and the corresponding relation between corresponding prestrain copy amount information be access times while being greater than 2w corresponding prestrain copy amount be 7, it is 6 etc. that access times are greater than prestrain copy amount corresponding in the time of 1.5w-2w, in step S2, prestrain equipment 1 can determine that the prestrain copy amount information of video video1 is 7.

Those skilled in the art will be understood that the mode of the above-mentioned prestrain copy amount information of determining described video to be loaded is only for giving an example; the mode of the prestrain copy amount information of other definite described videos to be loaded existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Then, in step S3, prestrain equipment 1 is according to described preload information, loads described in corresponding with described prestrain copy amount information and treat prestrain video on described prestrain node.Particularly, in step S3, first prestrain equipment 1 can determine the priority of the corresponding server of described prestrain node; , then according to described preload information and described priority, described in corresponding with described prestrain copy amount information, treat that prestrain video is loaded in the corresponding server of described prestrain node then.

Particularly, in step S3, first prestrain equipment 1 determine the priority of the corresponding server of described prestrain node, as according to as described in server at corresponding load information in rush hour, determine described priority, server priority as lower in load is higher.For example, connect example, for video video1, in step S2, prestrain equipment 1 determines that it is treats prestrain video, and corresponding prestrain node is CDN Beijing node, the prestrain copy amount information of video video1 is 3800, suppose that CDN Beijing node is made up of as server I to server V 5 servers, suppose server I to server V rush hour corresponding load information be followed successively by server I from low to high, server III, server II, server V, server IV, in step S3, prestrain equipment 1 determines that server I to the corresponding priority orders of server V is followed successively by server I, server III, server II, server V, server IV.

Those skilled in the art will be understood that the mode of the above-mentioned priority of determining the corresponding server of described prestrain node is only for giving an example; the mode of the priority of other existing or corresponding servers of definite described prestrain node that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Then, in step S3, prestrain equipment 1 is according to described preload information and described priority, described in corresponding with described prestrain copy amount information, treat that prestrain video is loaded in the corresponding server of described prestrain node, as in conjunction with as described in the device-dependent message of the corresponding server of prestrain node (as average speed of download, server disk space etc.), determine the maximum quantity for the treatment of prestrain video in corresponding server described in loading, when the task to be downloaded in described server exceed can add described in stop adding during until the number of prestrain video, until treat that prestrain video is loaded in the corresponding server of described prestrain node described in corresponding with described prestrain copy amount information.For example, connect example, in step S3, prestrain equipment 1 can be first according to server I to the device-dependent message of server V (as average speed of download, server disk space etc.), determine the maximum quantity that loads video video1 on each server, when the task to be downloaded in described server exceed can add described in stop adding during until the number of prestrain video, for example, supposing that charger 13 is determined at server I to the maximum quantity that loads video video1 in server V is followed successively by 2000, 1500, 800, 700, 500, charger 13 can be according to server I the priority order to server V, as server I, server III, server II, server V, server IV, in respective server, load successively video video1, in loading procedure, when the task to be downloaded in described server exceed can add described in stop adding during until the number of prestrain video, as the server I for thering is limit priority, its maximum quantity that can load video video1 is 2000, if but in loading procedure, as when load 1500 video video1 in server I time, task to be downloaded in server I exceedes the number 2000 of its video video1 that can add, now in step S3, prestrain equipment 1 stops at server I and stops adding video video1, then, in step S3, prestrain equipment 1 will load video video1 in the server III in inferior priority, the like, until by 3800 whole loadeds of video video1.

Those skilled in the art will be understood that and above-mentionedly will treat that prestrain video is loaded on mode in the corresponding server of described prestrain node only for for example described in corresponding with described prestrain copy amount information; other existing or may occur from now on will treat that prestrain video is loaded on mode in the corresponding server of described prestrain node as applicable to the present invention described in corresponding with described prestrain copy amount information; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Preferably, the method also comprises that step S4(is not shown).Particularly, in step S4, prestrain equipment 1, according to described preload information, is determined the prestrain path for the treatment of the corresponding source node of prestrain video and correspondence described in described content distributing network; Wherein, in step S3, prestrain equipment 1, based on described prestrain path, treats that prestrain video be loaded on described prestrain node described in being incited somebody to action by described source node.

Particularly, in step S4, prestrain equipment 1 is according to described preload information, determine the prestrain path for the treatment of the corresponding source node of prestrain video and correspondence described in described content distributing network, as using as described in as described in content distributing network middle distance prestrain node nearest store as described in treat prestrain video CDN node as described in source node, correspondingly, between described source node and described prestrain node, the shortest path of route is as described prestrain path, or, path fastest between described source node and described prestrain node is as described prestrain path, or using the Centroid server in described content distributing network as described source node, correspondingly, between just described source node and described prestrain node, the shortest path of route is as described prestrain path.For example, for video video1, it has higher access temperature information in region corresponding to node, CDN Beijing, suppose to have backed up video video1 in the node of CDN Beijing, but the node capacity of current C DN Beijing node is not enough to meet the requirements for access of its service range user to video video1, and current content distributing network is as nearest in the node path between Tianjin node in current CDN and CDN Beijing node, there is larger overlapping service range with CDN Beijing node, and in step S2, prestrain equipment 1 determines that corresponding preload information comprises that video video1 is the corresponding prestrain video for the treatment of, and corresponding prestrain node is CDN Tianjin node, because CDN Beijing node in current content distributing network current CDN has backed up video video1, in step S4, prestrain equipment 1 can be determined using CDN Beijing node as described source node, correspondingly, between described source node and described prestrain node, the shortest path of route is as described prestrain path, between CDN Beijing node and CDN Tianjin node, there are 2 paths path1 and path2 as supposed, wherein the connection line of path path1 passes through routing node as gone to CDN Tianjin node the node of CDN Langfang from CDN Beijing node, and the connection line of path path2 is by the through CDN of CDN Beijing node Tianjin node, in step S4, prestrain equipment 1 can determine that path path2 is corresponding prestrain path.

Those skilled in the art will be understood that the above-mentioned mode of determining described source node and described prestrain path is only for giving an example; the mode in other definite described source nodes existing or that may occur from now on and described prestrain path is as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

More preferably, in step S4, prestrain equipment 1 can be first according to described preload information, determines and described in described content distributing network, treats the corresponding source node of prestrain video; Then, then according to described source node, determine rule in conjunction with predefined paths, described in determining, treat the corresponding prestrain of prestrain video path.Preferably, described predefined paths determines that rule comprises following at least any one:

-determine described prestrain path according to the link range between described source node and described prestrain node;

-determine described prestrain path according to the bandwidth between described source node and described prestrain node;

-determine described prestrain path according to the post and telecommunication tariff between described source node and described prestrain node.

Particularly, in step S4, prestrain equipment 1 can be first according to described preload information, determine and described in described content distributing network, treat the corresponding source node of prestrain video, as first using as described in treat prestrain video as described in storing in content distributing network CDN node as described in treat the corresponding one or more candidate's source nodes of prestrain video; Then, then according to the node diagnostic information of described candidate's source node, from described one or more candidate's source nodes, select preferred candidate's source node, described in setting it as, treat the corresponding source node of prestrain video.At this, the node diagnostic information of described candidate's source node includes but not limited to as the node characteristic relevant information of candidate's source node 1), as node capacity, free memory, server load condition, outlet bandwidth etc.; 2) running state information of described candidate's source node, as whether fault etc. is moved, whether had to health; 3) the network speed information between described both candidate nodes and described prestrain node.

For example, for video video1, it has higher access temperature information in region corresponding to node, CDN Beijing, suppose to have backed up video video1 in the node of CDN Beijing, but the node capacity of current C DN Beijing node is not enough to meet the requirements for access of its service range user to video video1, and current content distributing network is as nearest in the node path between Tianjin node in current CDN and CDN Beijing node, there is larger overlapping service range with CDN Beijing node, and in step S2, prestrain equipment 1 determines that corresponding preload information comprises that video video1 is the corresponding prestrain video for the treatment of, and corresponding prestrain node is CDN Tianjin node, suppose in current content distributing network current CDN except CDN Beijing node has backed up video video1, also exist with lower node as CDN1, CDN2, CDN3 backup has video video1, in step S4, prestrain equipment 1 can be first by CDN Beijing node, and node CDN1, CDN2 and CDN3 are as the corresponding described candidate's source node of video video1, then, in step S4, prestrain equipment 1 is again according to the node diagnostic information of described candidate's source node, from described one or more candidate's source nodes, select preferred candidate's source node, described in setting it as, treat the corresponding source node of prestrain video, for example, connect example, suppose that node CDN1 present load is fuller, the node characteristic relevant information of node CDN2, as node capacity, free memory, server load condition, the indexs such as outlet bandwidth are all comparatively excellent, but and prestrain node is that connection line between the node of CDN Tianjin is than the connecting line great distance between CDN Beijing node and CDN Tianjin node, but CDN Beijing node because of present load fuller, its outlet bandwidth is very narrow, in step S4, prestrain equipment 1 can determine that node CDN2 is as preferred source node.

Those skilled in the art will be understood that the above-mentioned mode of determining described candidate's source node is only for giving an example; the mode of other existing or definite described candidate's source nodes that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Then, in step S4, prestrain equipment 1, again according to described source node, is determined rule in conjunction with predefined paths, described in determining, treats the corresponding prestrain of prestrain video path.For example, connect example, suppose that source node is that node CDN2 and prestrain node are to exist 2 paths as path1 ' and path2 ' between the node of CDN Tianjin, wherein the bandwidth between path path1 ' and CDN Tianjin node is lower than the bandwidth between path path2 ' and CDN Tianjin node, in step S4, prestrain equipment 1 can determine that path path1 ' is for corresponding prestrain path.

Then,, in step S3, prestrain equipment 1, based on described prestrain path, treats that prestrain video be loaded on described prestrain node described in being incited somebody to action by described source node.For example, connect example,, in step S3, prestrain equipment 1 is path path2 ' based on described prestrain path, by node CDN2, video video1 is loaded on to CDN Tianjin node, on the node of CDN Tianjin, backs up video video1.

Preferably, the method also comprises that step S5(is not shown).Particularly, in step S5, prestrain equipment 1 is according to described access temperature information, determines corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete.

Particularly, in step S5, prestrain equipment 1 is according to described access temperature information, determine corresponding pre-deletion video, as using as described in access in each node is stored in content distributing network video video that temperature information is less than predetermined threshold as described in pre-deletion video, or using the video of accessing temperature information minimum in the video that in described content distributing network, each node is stored as described pre-deletion video.For example, for current content distributing network current CDN, in its CDN Beijing node, store video as video1 to video5, suppose in step S1, prestrain equipment 1 determines that the access temperature information of a video in the node of CDN Beijing is as shown in table 8 below:

The video of CDN Beijing node storage	Access temperature information
		video1	4300
video2	1500
		video3	2800
video4	500
		video5	1000

Table 8

In step S5, prestrain equipment 1 can determine in the node of CDN Beijing, access temperature information lower than the video of predetermined threshold 2000 as described pre-deletion video, obtaining corresponding pre-deletion video is video2, video4 and video5; Or in step S5, prestrain equipment 1 can be according to accessing temperature information in the node of CDN Beijing, the video of access temperature information minimum is as described pre-deletion video, and obtaining corresponding pre-deletion video is video4.

Then, in step S5, prestrain equipment 1 by described pre-deletion video the corresponding node from described content distributing network delete.At this, in step S5, prestrain equipment 1 mode that the corresponding node from described content distributing network is deleted by described pre-deletion video includes but not limited to following at least any one:

1) reduce the copy amount of the described pre-deletion video of storing in the corresponding node in described content distributing network.For example, connect example, in step S5, prestrain equipment 1 can reduce the pre-deletion video video2, the video4 that on the node of CDN Beijing, store and the copy amount of video5, as the copy of video video2 is reduced to 300 by 500, the copy of video video4 is reduced to 50 by 100, the copy of video5 is reduced to 500 by 800.At this, the present invention is by reducing the copy amount of the described pre-deletion video of storing in the corresponding node in described content distributing network, discharged the memory space of the server that this node is corresponding, can be used for the higher video of memory access temperature information.

2) by described pre-deletion video, the corresponding node from described content distributing network is deleted, until there is the copy of a described pre-deletion video at the most in the corresponding node in described content distributing network.For example, also connect example, in step S5, prestrain equipment 1 can be deleted whole copies of deleting in advance video video2, video4 and video5 from CDN Beijing node of current content distributing network current CDN, only retain each video video2, a video4 and video5.

Preferably, in step S5, prestrain equipment 1 also can move to retained described pre-deletion video on corresponding other servers of CDN Beijing node from current server, distributes with the video resource of optimizing between the corresponding server of CDN Beijing node.

Preferably, in step S5, prestrain equipment 1 also can be according to the access temperature information of the video that in described content distributing network, each node is stored, according to access temperature information order from low to high, successively using corresponding video as described pre-deletion video, until the disk space of the corresponding server of corresponding content distributing network node meets predetermined threshold.

Preferably, the present invention can be when when the Insufficient disk space of the corresponding server of content delivery network node, just trigger in step S5, prestrain equipment 1 is according to described access temperature information, determine corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete.

Those skilled in the art will be understood that the above-mentioned mode that corresponding node from described content distributing network is deleted by described pre-deletion video is only for giving an example; other existing or modes that the corresponding node from described content distributing network is deleted by described pre-deletion video that may occur are from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

Those skilled in the art will be understood that in specific embodiment, and step S5 and step S2 can be the execution of serial, can be also the execution walking abreast; Step S5 and step S3 can be the execution of serial, also can be the execution walking abreast, be that the present invention can be before determining corresponding preload information or after determining corresponding preload information, can determine corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete; Or, the present invention can be before treating that prestrain video is loaded on described prestrain node described in inciting somebody to action, or after treating that prestrain video is loaded on described prestrain node described in inciting somebody to action, can determine corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete, thereby the present invention can delete the lower video of access temperature in real time, realize the beneficial effect of the video storage of optimizing CDN node.

Fig. 4 illustrates in accordance with a preferred embodiment of the present invention a kind of for the method flow diagram at content distributing network prestrain video.

Wherein, the method bag step S1 ', step S2 ' and step S3 ', wherein, step S2 ' comprises step S21 ', step S22 ' and step S23 '.Particularly, in step S1 ', prestrain equipment 1 is determined the access temperature information of video; In step S21 ', prestrain equipment 1 is according to described access temperature information, determines the corresponding prestrain video for the treatment of; In step S22 ', described in the definite described content distributing network of prestrain equipment 1, treat the corresponding one or more candidate's prestrain nodes of prestrain video; In step S23 ', prestrain equipment 1 is according to the node diagnostic information of described candidate's prestrain node, from described one or more candidate's prestrain nodes determine with described in treat the preferred prestrain node that prestrain video is corresponding, to treat that by described prestrain video and described preferred prestrain node are as corresponding preload information; In step S3 ', prestrain equipment 1, according to described preload information, is treated prestrain video described in loading on described prestrain node.At this, step S1 ' is identical or basic identical with the content of the corresponding step in Fig. 3 embodiment with step S3 ', for simplicity's sake, thus do not repeat them here, and comprise by reference therewith.

Particularly, in step S21 ', prestrain equipment 1 is according to described access temperature information, determines the corresponding prestrain video for the treatment of.At this, in step S21 ', prestrain equipment 1 determines that the corresponding mode for the treatment of prestrain video treats that the mode of prestrain video is identical or basic identical at step S2 described in definite with it in Fig. 3, for simplicity's sake, therefore do not repeat them here, and comprise by reference therewith.

In step S22 ', described in the definite described content distributing network of prestrain equipment 1, treat the corresponding one or more candidate's prestrain nodes of prestrain video.At this, in step S22 ', prestrain equipment 1 determines that the mode of described candidate's prestrain node includes but not limited to following at least any one:

1) play in record in the described history for the treatment of prestrain video according to user, select record about the history of the loading node in described content distributing network, described in determining, treat the corresponding one or more candidate's prestrain nodes of prestrain video.For example, for treating that prestrain video is as video video1, because it has higher access temperature information in the corresponding region of node, CDN Beijing, therefore, need to determine the corresponding prestrain node of video video1, to meet the broadcasting demand of Beijing area user to video video1, suppose that multiple users in Beijing area are in the playing process of video video1, because of network speed, the restrictions such as bandwidth, when appearance video playback is not smooth, user more selects node as CDN Tianjin node, CDN Shijiazhuang node etc. carries out the broadcasting of video video1, in step S22 ', prestrain equipment 1 can be selected record according to user's the history about the loading node in described content distributing network, by Beijing area user compared with the node of more options as CDN Tianjin node, CDN Shijiazhuang node is as candidate's prestrain node of video video1.

2) based on the corresponding network topology structure of described content distributing network, determine the corresponding one or more candidate's prestrain nodes of described video to be loaded, as treated that prestrain video has one or more content delivery network nodes in the region of higher access temperature information as described in serving, the corresponding one or more candidate's prestrain nodes of described video to be loaded.For example, for treating that prestrain video is as video video1, because it has higher access temperature information in the corresponding region of node, CDN Beijing, therefore, need to determine the corresponding prestrain node of video video1, to meet the broadcasting demand of Beijing area user to video video1, suppose to exist CDN Beijing node of the higher access temperature information of having of multiple CDN nodes and video video1 to there is larger overlapping service range in current content distributing network current CDN, as CDN4, CDN5, CDN6, CDN Tianjin node etc., in step S22 ', prestrain equipment 1 can have the node of larger overlapping service range as candidate's prestrain node of video video1 with CDN Beijing node using the plurality of.

Those skilled in the art will be understood that the above-mentioned mode of determining described candidate's prestrain node is only for giving an example; the mode of other definite described candidate's prestrain nodes existing or that may occur is from now on as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

In step S23 ', prestrain equipment 1 is according to the node diagnostic information of described candidate's prestrain node, from described one or more candidate's prestrain nodes determine with described in treat the preferred prestrain node that prestrain video is corresponding, to treat that by described prestrain video and described preferred prestrain node are as corresponding preload information.At this, the node diagnostic information of described candidate's prestrain node includes but not limited to as the node characteristic relevant information of candidate's prestrain node 1), as node capacity, free memory, server load condition, outlet bandwidth etc.; 2) running state information of described candidate's prestrain node, as whether fault etc. is moved, whether had to health.

For example, connect example, in step S22 ', prestrain equipment 1 determine treat prestrain video as candidate's prestrain node of video video1 be CDN4, CDN5, CDN6, CDN Tianjin node, suppose that node CDN4 and node CDN5 present load are fuller, the node characteristic relevant information of node CDN6, as node capacity, free memory, server load condition, the indexs such as outlet bandwidth are all inferior to CDN Tianjin node, in step S23 ', prestrain equipment 1 can be using CDN Tianjin node as the preferred prestrain node corresponding with video video1, being that CDN Tianjin node is as corresponding preload information by video video1 and described preferred prestrain node.

Those skilled in the art will be understood that the above-mentioned mode for the treatment of the corresponding preferred prestrain node of prestrain video described in determining is only for for example; other existing or determining of may occurring from now on described in treat the corresponding preferred prestrain node of prestrain video mode as applicable to the present invention; also should be included in protection range of the present invention, and be contained in this at this with way of reference.

It should be noted that the present invention can be implemented in the assembly of software and/or software and hardware, for example, can adopt application-specific integrated circuit (ASIC) (ASIC), general object computer or any other similar hardware device to realize.In one embodiment, software program of the present invention can carry out to realize step mentioned above or function by processor.Similarly, software program of the present invention (comprising relevant data structure) can be stored in computer readable recording medium storing program for performing, for example, and RAM memory, magnetic or CD-ROM driver or floppy disc and similar devices.In addition, steps more of the present invention or function can adopt hardware to realize, for example, thereby as coordinate the circuit of carrying out each step or function with processor.

In addition, a part of the present invention can be applied to computer program, and for example computer program instructions, in the time that it is carried out by computer, by the operation of this computer, can call or provide the method according to this invention and/or technical scheme.And call the program command of method of the present invention, may be stored in fixing or movably in recording medium, and/or be transmitted by the data flow in broadcast or other signal bearing medias, and/or be stored in according in the working storage of the computer equipment of described program command operation.At this, comprise according to one embodiment of present invention a device, this device comprises memory for storing computer program instructions and the processor for execution of program instructions, wherein, in the time that this computer program instructions is carried out by this processor, trigger this device and move based on aforementioned according to the method for multiple embodiment of the present invention and/or technical scheme.

To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to be included in the present invention.Any Reference numeral in claim should be considered as limiting related claim.In addition, obviously other unit or step do not got rid of in " comprising " word, and odd number is not got rid of plural number.Multiple unit of stating in device claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.

Claims (22)

1. for the method at content distributing network prestrain video, wherein, the method comprises:

A determines the access temperature information of video;

B, according to described access temperature information, determines corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding;

C, according to described preload information, treats prestrain video described in loading on described prestrain node.

2. method according to claim 1, wherein, described access temperature information comprises following at least any one:

-described video is at the corresponding visiting frequency information of zones of different and/or access duration information;

-described video is at corresponding visiting frequency information of the different periods of same area and/or access duration information.

3. method according to claim 1 and 2, wherein, described step a comprises:

-according to the access related information about described video in the corresponding video access daily record of video, determine the access temperature information of described video;

Wherein, described access related information comprises following at least any one:

Vision operation and the corresponding video duration of this vision operation that-user carries out described video in the process of the described video of access;

The visiting frequency information of-user to described video.

4. method according to claim 3, wherein, described access related information comprises vision operation and the corresponding video duration of this vision operation that carry out described video in the process of the described video of access at family, wherein, described step a comprises:

-according to the vision operation to described video execution in the process of the described video of access of user in the corresponding video access daily record of video, and the corresponding video duration of this vision operation, in conjunction with the corresponding weight information of this vision operation, the access temperature information of described video is determined in weighting.

5. according to the method described in any one in claim 1 to 4, wherein, described step a comprises:

-according to the reference video corresponding with video, determine the access temperature information of described video.

6. according to the method described in any one in claim 1 to 5, wherein, described step b comprises:

-according to described access temperature information, determine the corresponding prestrain video for the treatment of;

B2 determines and described in described content distributing network, treats the corresponding one or more candidate's prestrain nodes of prestrain video;

-according to the node diagnostic information of described candidate's prestrain node, from described one or more candidate's prestrain nodes determine with described in treat the preferred prestrain node that prestrain video is corresponding, to treat that by described prestrain video and described preferred prestrain node are as corresponding preload information.

7. method according to claim 6, wherein, described step b2 comprises:

-based on the corresponding network topology structure of described content distributing network, determine the corresponding one or more candidate's prestrain nodes of described video to be loaded.

8. according to the method described in any one in claim 1 to 5, wherein, wherein, described step b comprises:

-according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video, described content distributing network with described in treat the prestrain node that prestrain video is corresponding, and described in treat the prestrain copy amount information of prestrain video;

Wherein, described step c comprises:

-according to described preload information, on described prestrain node, load described in corresponding with described prestrain copy amount information and treat prestrain video.

9. according to the method described in any one in claim 1 to 8, wherein, the method also comprises:

D, according to described preload information, determines the prestrain path for the treatment of the corresponding source node of prestrain video and correspondence described in described content distributing network;

Wherein, described step c comprises:

-based on described prestrain path, described in being incited somebody to action by described source node, treat that prestrain video is loaded on described prestrain node.

10. method according to claim 9, wherein, described steps d comprises:

-according to described preload information, determine and described in described content distributing network, treat the corresponding source node of prestrain video;

-according to described source node, determine rule in conjunction with predefined paths, described in determining, treat the corresponding prestrain of prestrain video path;

Wherein, described predefined paths determines that rule comprises following at least any one:

-determine described prestrain path according to the link range between described source node and described prestrain node;

-determine described prestrain path according to the bandwidth between described source node and described prestrain node.

11. according to the method described in any one in claim 1 to 10, and wherein, the method also comprises:

-according to described access temperature information, determine corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete.

12. 1 kinds for the prestrain equipment at content distributing network prestrain video, and wherein, this prestrain equipment comprises:

Temperature determining device, for determining the access temperature information of video;

Information determining device, for according to described access temperature information, determines corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video and described content distributing network with described in treat the prestrain node that prestrain video is corresponding;

Charger, for according to described preload information, treats prestrain video described in loading on described prestrain node.

13. prestrain equipment according to claim 12, wherein, described access temperature information comprises following at least any one:

-described video is at the corresponding visiting frequency information of zones of different and/or access duration information;

-described video is at corresponding visiting frequency information of the different periods of same area and/or access duration information.

14. according to the prestrain equipment described in claim 12 or 13, and wherein, described temperature determining device is used for:

-according to the access related information about described video in the corresponding video access daily record of video, determine the access temperature information of described video;

Wherein, described access related information comprises following at least any one:

Vision operation and the corresponding video duration of this vision operation that-user carries out described video in the process of the described video of access;

The visiting frequency information of-user to described video.

15. prestrain equipment according to claim 14, wherein, described access related information comprises vision operation and the corresponding video duration of this vision operation that carry out described video in the process of the described video of access at family, and wherein, described temperature determining device is used for:

-according to the vision operation to described video execution in the process of the described video of access of user in the corresponding video access daily record of video, and the corresponding video duration of this vision operation, in conjunction with the corresponding weight information of this vision operation, the access temperature information of described video is determined in weighting.

16. according to claim 12 to the prestrain equipment described in any one in 15, and wherein, described temperature determining device is used for:

-according to the reference video corresponding with video, determine the access temperature information of described video.

17. according to claim 12 to the prestrain equipment described in any one in 16, and wherein, described information determining device comprises:

Video determining unit, for according to described access temperature information, determines the corresponding prestrain video for the treatment of;

Both candidate nodes determining unit, treats the corresponding one or more candidate's prestrain nodes of prestrain video for determining described in described content distributing network;

Preferably node determination unit, be used for according to the node diagnostic information of described candidate's prestrain node, from described one or more candidate's prestrain nodes determine with described in treat the preferred prestrain node that prestrain video is corresponding, to treat that by described prestrain video and described preferred prestrain node are as corresponding preload information.

18. prestrain equipment according to claim 17, wherein, described both candidate nodes determining unit is used for:

-based on the corresponding network topology structure of described content distributing network, determine the corresponding one or more candidate's prestrain nodes of described video to be loaded.

19. according to claim 12 to the prestrain equipment described in any one in 16, and wherein, wherein, described information determining device is used for:

-according to described access temperature information, determine corresponding preload information, wherein, described preload information comprise corresponding treat in prestrain video, described content distributing network with described in treat the prestrain node that prestrain video is corresponding, and described in treat the prestrain copy amount information of prestrain video;

Wherein, described charger is used for:

-according to described preload information, on described prestrain node, load described in corresponding with described prestrain copy amount information and treat prestrain video.

20. according to claim 12 to the prestrain equipment described in any one in 18, and wherein, this prestrain equipment also comprises:

Source and path determining device, for according to described preload information, determine the prestrain path for the treatment of the corresponding source node of prestrain video and correspondence described in described content distributing network;

Wherein, described charger is used for:

-based on described prestrain path, described in being incited somebody to action by described source node, treat that prestrain video is loaded on described prestrain node.

21. prestrain equipment according to claim 20, wherein, described source and path determining device are used for:

-according to described preload information, determine and described in described content distributing network, treat the corresponding source node of prestrain video;

-according to described source node, determine rule in conjunction with predefined paths, described in determining, treat the corresponding prestrain of prestrain video path;

Wherein, described predefined paths determines that rule comprises following at least any one:

-determine described prestrain path according to the link range between described source node and described prestrain node;

-determine described prestrain path according to the bandwidth between described source node and described prestrain node.

22. according to claim 12 to the prestrain equipment described in any one in 21, and wherein, this prestrain equipment also comprises:

Delete device, for according to described access temperature information, determines corresponding pre-deletion video, with by described pre-deletion video the corresponding node from described content distributing network delete.