CN101610162A - A kind of method, system and equipment that content is provided based on reciprocity storage networking - Google Patents
A kind of method, system and equipment that content is provided based on reciprocity storage networking Download PDFInfo
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- CN101610162A CN101610162A CN200810115067.4A CN200810115067A CN101610162A CN 101610162 A CN101610162 A CN 101610162A CN 200810115067 A CN200810115067 A CN 200810115067A CN 101610162 A CN101610162 A CN 101610162A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
Abstract
The invention discloses a kind ofly provides method, system and the equipment of content based on reciprocity storage networking, belongs to the communications field.Described method comprises: according to default distribution policy, in peer-to-peer storage node, peer-to-peer storage node constitutes reciprocity storage networking with distribute media content; The sign of the media content that carries in the service request of border broadcast nodes according to the terminal use is obtained media content to reciprocity storage networking; Border broadcast nodes offers the terminal use with the media content that obtains.System comprises border broadcast nodes and at least one peer-to-peer storage node.Border broadcast nodes comprises receiver module, acquisition module and module is provided.Discharge device comprises policy module and distribution module.Introduce reciprocity storage networking, realize providing media content by at least one peer-to-peer storage node in the reciprocity storage networking to the terminal use, thereby significantly reduce the storage redundancy in the existing content network, reduce the purpose of the reliability of Network Management and maintenance cost, raising network.
Description
Technical field
The present invention relates to the communications field, particularly a kind of method, system and equipment that content is provided based on reciprocity storage networking.
Background technology
Streaming media service or IPTV (IP TeleVision, Web TV) business is a kind of new business that developed rapidly in recent years, wherein, and streaming media service utilization stream transmission technology, on packet network, transmit multimedia file, comprise file contents such as video, audio frequency.The user need not when visiting again these contents just to download fully and can play immediately.The key technology that Streaming Media is realized is transmitted technology exactly as a stream, and the stream transmission technology is that continuous video and audio-frequency information are put server after treatment, allow the user watch, to listen to, and whole file such as do not need to download to the network transmission technology that just can watch behind the own machine while downloading.
Along with IPTV or streaming media service become hot spot application gradually in recent years, CDN (Content Delivery/DistributionNetwork, content delivery/distributing network) just being used to proximad, the user provides medium or content, to promote user experience, wherein, CDN progressively enlarges along with the web scale and occurs, and suitable CDN disposes the CDN nodal cache focus webpage that can make near the user, image etc.When user's request content, can obtain by these CDN cache nodes nearby; So just make content can consign to the user fast, thereby improve user experience; Can alleviate simultaneously the congestion condition of backbone network.Referring to Fig. 1, the work schematic diagram of existing C DN network is provided, CDN generally by CS (Center Server, central server) and a plurality of ES (Edge Server, Edge Server) component content network, is used for paying content to the terminal use; ICP Server (Internet Content Provider Server, Web content provides server) is used for the receiving terminal service request from user, returns the URL ((Uniform Resource Locator,, URL(uniform resource locator)) of corresponding contents; RRS (Request RoutingServer, request routing server) is used for the content URL request according to the user, chooses more excellent ES according to ES load, relative position etc. and provides content for the user.
Because when at present realizing the CDN content network, employing be the deployment of stratification, referring to Fig. 2, provide a kind of stratification CDN content network schematic diagram of three layers of deployment, by one-level CS (H-CS, High-CS), secondary CS (L-CS, Low-CS) and edge ES form.When user terminal after RRS sends content requests, RRS is that user terminal distributes an ES according to the content on the ES, ES load, ES physical location, if because the content that can't provide it to ask to the terminal use is provided on this ES the ES failure and other reasons, RRS is redirected to L-CS under this user terminal with request, if when not having content that user terminal asks on the L-CS, again request is redirected to the H-CS under this user terminal.
The inventor finds that there is following at least shortcoming and defect in existing C ND network when realization is of the present invention:
1. the content of the last storage of storage redundancy: L-CS is mainly by the unified issue of H-CS, according to the principle that provides nearby, need go up reproducting content to L-CS node from H-CS near the user, therefore L-CS has possessed the copy that a large amount of H-CS go up content, and the content among the stratification CDN between L-CS and the L-CS can't be shared, and has so just caused a large amount of storage redundancies on the middle cache node L-CS.From stratification CDN network of network structure as can be seen the CDN network layer many more, when scale is big more, redundancy is big more, the storage cost of investment of CDN networking is higher.
2. management maintenance complexity: in order to guarantee reliability, the influence of avoiding single point failure to bring need carry out dual-host backup configuration and management to node, and the adding of new node has also increased the complexity of network management; Need simultaneously content distribution is managed and safeguards, need in advance content is distributed near cache node by the user.
3. the problem shared of content: stratification CDN content network normally from top to bottom, strict tree, higher level's father node of child node is normally fixing.Restriction on the framework makes the content of issuing on the bottom layer node be difficult to the whole network to share, and carries out the whole network content release from top to bottom then the flexibility of content is introduced in the influence area if adopt fully.
Summary of the invention
In order to reduce the storage redundancy in the existing content network, reduce the reliability of Network Management and maintenance cost, raising network, the embodiment of the invention provides a kind of method, system and equipment that content is provided based on reciprocity storage networking.Described technical scheme is as follows:
On the one hand, provide a kind of and provide the method for content based on reciprocity storage networking, method comprises:
According to default distribution policy, in peer-to-peer storage node, described peer-to-peer storage node constitutes reciprocity storage networking with distribute media content;
The sign of the media content that carries in the service request of border broadcast nodes according to the terminal use is obtained media content to described reciprocity storage networking;
Described border broadcast nodes offers described terminal use with the media content that obtains.
On the one hand, provide a kind of border broadcast nodes, described node comprises:
Receiver module is used for the service request that the terminal use sends;
Acquisition module is used for the sign of the media content that carries according to the service request that described receiver module receives, obtains media content to described peer-to-peer storage node;
Module is provided, is used for the media content that described acquisition module obtains is offered described terminal use.
On the one hand, provide a kind of terminal equipment, described terminal equipment comprises:
Acquisition module is used to obtain the positional information of media content place peer-to-peer storage node;
Sending module is used to send service request, carries the sign of the media content that the user desires to obtain and the positional information of the media content place peer-to-peer storage node that described acquisition module obtains in the described service request.
On the other hand, provide a kind of discharge device, described discharge device comprises:
Policy module is used to obtain distribution policy;
Distribution module is used for the distribution policy that obtains according to described policy module, with the peer-to-peer storage node of distribute media content in the reciprocity storage networking.
Again on the one hand, provide a kind of and provide the system of content based on reciprocity storage networking, system comprises: border broadcast nodes and at least one peer-to-peer storage node; Described peer-to-peer storage node constitutes reciprocity storage networking;
Described border broadcast nodes, be used for the service request that the receiving terminal user sends, according to the sign of the media content that carries in the described service request, after described peer-to-peer storage node is obtained media content, the described media content that obtains is offered described terminal use;
Described peer-to-peer storage node is used to obtain the media content according to default distribution policy distribution; And, provide described media content to described border broadcast nodes according to the request of described border broadcast nodes.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
Introduce reciprocity storage networking, realize providing media content by at least one peer-to-peer storage node in the reciprocity storage networking to the terminal use, thereby significantly reduce the storage redundancy in the existing content network, reduce the purpose of the reliability of Network Management and maintenance cost, raising network.
Description of drawings
Fig. 1 is the work schematic diagram of the CDN network that provides of prior art;
Fig. 2 is the stratification CDN content network schematic diagram of three layers of deployment providing of prior art;
Fig. 3 is the network architecture schematic diagram of the application equity storage networking that provides of the embodiment of the invention;
Fig. 4 is the entity logical construction schematic diagram under the reciprocity storage networking framework that provides of the embodiment of the invention
Fig. 5 is the embodiment of the invention 1 provides provides content based on reciprocity storage networking a method flow schematic diagram;
Fig. 6 be the embodiment of the invention 1 provide to provide the information interaction of content based on reciprocity storage networking be schematic diagram;
Fig. 7 is that the information interaction of the method for data of obtaining when MSF lost efficacy that provides of the embodiment of the invention 1 is schematic diagrames;
Fig. 8 is the embodiment of the invention 2 provides provides content based on reciprocity storage networking a method flow schematic diagram;
Fig. 9 be the embodiment of the invention 2 provide to provide the information interaction of content based on reciprocity storage networking be schematic diagram;
Figure 10 be the embodiment of the invention 2 provide to provide the information interaction of the method for content based on reciprocity storage networking when MSF lost efficacy be schematic diagram;
Figure 11 is the schematic diagram of the border broadcast nodes that provides of the embodiment of the invention 3;
Figure 12 is another schematic diagram of the border broadcast nodes that provides of the embodiment of the invention 3;
Figure 13 is the schematic diagram of the terminal equipment that provides of the embodiment of the invention 4;
Figure 14 is the schematic diagram of the discharge device that provides of the embodiment of the invention 5;
Figure 15 be the embodiment of the invention 6 provide provide the system schematic of content based on reciprocity storage networking;
Figure 16 be the embodiment of the invention 6 provide provide another schematic diagram of the system of content based on reciprocity storage networking.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Along with development of internet technology, the cost of disposing transmission network declines to a great extent, and provincially becomes possibility to city-level, city-level to the fiber direct connection link between the city-level, adopts linear speed to exchange between each network node, transmission speed significantly improves, the time-delay on the geographical span even can ignore.Opposite, because the price of memory device is high always, expenses such as management maintenance are high, and along with IPTV and the streaming media service scale of disposing constantly enlarges, the growth of huge volumes of content also causes the investment of operator on memory device significantly to increase.
The technical scheme that the embodiment of the invention provides, introduce reciprocity storage networking, provide media content by reciprocity storage networking to the terminal use, thereby realized significantly reducing the storage redundancy in the existing content network, reduce the reliability of Network Management and maintenance cost, raising network.
Referring to Fig. 3, a kind of network architecture schematic diagram of using reciprocity storage networking is provided, comprise reciprocity storage networking, border broadcast nodes and terminal use, wherein.
One, reciprocity storage networking: be used for providing media content to the terminal use, each memory node in the network all is the peer content memory node (MSF that the media content stores service can be provided, Media Storage Function), the media content on each memory node can be the whole network user service.The cache node of the organization management structure of cancellation stratification, the cancellation intermediate level in reciprocity storage networking, the core content aspect is introduced a plurality of peer-to-peer storage node the media content stores service is provided, all balance of media content are distributed to a plurality of peer-to-peer storage node (can be tactful according to the distributions such as load of each peer node), thus distribution content stores access ability.The equity storage networking is made up of peer-to-peer storage node all in the network range (MSF), the equity storage networking can also comprise a plurality of subdomains, each peer-to-peer storage node can belong to a specific subdomain, can be independent of any subdomain, also can belong to a plurality of subdomains.So-called subdomain can be divided by region usually, for example province constitutes a subdomain and forms a big shared storage network between a plurality of province, also can each area (area comprises a plurality of cities) inside the province constitutes a subdomain and whole province is a shared storage network.
During the distribution of content, can be the content distribution in the network-wide basis in realizing reciprocity storage networking, also can be the content distribution in the subdomain scope, wherein:
For the distribution of the content in the network-wide basis, content realizes that in network-wide basis the overall situation is shared, carries out distribution scheduling in same aspect unification.
For the content in subdomain scope distribution, unifiedly in this subdomain carry out distribution scheduling and can not be diffused into and do not belong to this regional peer-to-peer storage node.According to the content sharing policy, the content of area distribution only realizes local sharing in the zone under this content (one or more subdomain), can realize in several zones or network-wide basis that also the overall situation is shared.
Two, border broadcast nodes: border broadcast nodes is the actual node that media data flow is provided for user terminal.Border broadcast nodes is obtained media content from reciprocity storage networking, and offers final user terminal.Border broadcast nodes is as edge buffer memory and the coding fluidisation server of reciprocity storage networking to user terminal.
Referring to Fig. 4, entity logical construction schematic diagram under should equity storage networking framework is provided, and wherein, the media business control unit is for being specifically responsible for the control unit that the IPTV business is provided, be used for the receiving terminal service request from user, for the terminal use selects border broadcast nodes; Border broadcast nodes is that border broadcast nodes can be provided with buffer memory, is used for the media content of the high high temperature of cache access frequency from the nearer entity that the media delivery playing function is provided of user's physical location.The equity storage networking is made of a plurality of MSF, is used to provide the storage of physical medium content, wherein, has been distributed in advance among each MSF during each media content initial release.
Wherein, use above-mentioned reciprocity storage networking framework, what the embodiment of the invention provided provides the method for content to the contents are as follows based on reciprocity storage networking:
At first, according to default distribution policy, in peer-to-peer storage node, peer-to-peer storage node constitutes reciprocity storage networking with distribute media content; Then, border broadcast nodes receiving terminal user's request, the sign of the media content that carries in the service request according to the terminal use is obtained media content to reciprocity storage networking; At last, border broadcast nodes offers the terminal use with the media content that obtains.
Below, will provide the method for content to be described in detail what the embodiment of the invention provided based on reciprocity storage networking with a plurality of embodiment, see following each embodiment for details.
Referring to Fig. 5, the embodiment of the invention provides a kind of and provides the method for content based on reciprocity storage networking, and the structural representation that provides with Fig. 4 is that example describes, and particular content is as follows:
Step 101: in advance with among the peer-to-peer storage node MSF of distribute media content in the reciprocity storage networking.Specifically comprise:
Owing to can distribute the distribution that the scope strategy is realized media content according to different content, can be on the content stores node M SF of distribute media content different range in the peer-to-peer network, the content distribution can be in network-wide basis, carried out, also the distribution of the content in the regional extent can be.
A) can media content evenly be distributed to each MSF according to the load of each peer-to-peer storage node in the reciprocity storage networking;
B) also can be according to specific peer-to-peer network algorithm, for example P2P (Peer to Peer, peer node)/DHT (DistributedHash Table, distributing Hash table technology algorithm) carries out distribution calculating, according to the target MSF of result of calculation selection distribution, realize the equilibrium distribution of media content.Be specially: each peer-to-peer storage node has node identification (Node-ID) (corresponding present embodiment, be respectively Node-ID-MSF1, Node-ID-MSF2 ..., Node-ID-MSFm ..., Node-ID-MSFn), media content has resource identification (corresponding present embodiment is Resource-ID), according to default mapping algorithm, Resource-ID is mapped to Node-ID-MSF1 and Node-ID-MSF2 respectively, and media content stores MSF1 and MSF2 node into according to mapping relations distributions.
Step 102: user terminal UE wherein, comprises the sign of the media content that will ask to the service request that media business control unit SCF sends media content in this service request;
Step 103: media business control unit SCF sends to border broadcast nodes with the service request that receives.
Wherein, after media business control unit SCF receives the service request that the terminal use sends, according to the selection strategy of self formulating, from a plurality of border broadcast nodes, select the border broadcast nodes of an optimum (for example nearest from terminal use's physical location), the embodiment of the invention is the concrete mode and the method that are adopted when selecting border broadcast nodes of restricting media Service Control Unit SCF not.
Step 104: after border broadcast nodes is received service request, use the peer-to-peer network algorithm to send the content search request to reciprocity storage networking according to the sign of the media content in the request.
Step 105: reciprocity storage networking is inquired about according to content search request and corresponding peer-to-peer network algorithm, and Query Result is returned to this border broadcast nodes, comprises the positional information of the corresponding MSF that this media content can be provided in the Query Result.
Step 106: after border broadcast nodes is received the positional information of the MSF that reciprocity storage networking returns, to this MSF acquisition request media content;
Step 107: border broadcast nodes gets access to media content, to encode fluidisation and finally offer the terminal use of the media content that gets access to.
Further, when in step 105, when having comprised the positional information of a plurality of corresponding MSF that this media content can be provided in the Query Result, for example, two MSF (MSF1 and MSF2 have been comprised, because when in step 101, media content being distributed, MSF1 and MSF2 have obtained same media content data), correspondingly, border broadcast nodes is after receiving the Query Result that reciprocity storage networking returns, can select suitable MSF according to the selection strategy of self formulating, for example:
A) use the geographical position priority algorithm, judge the close degree of MSF and border broadcast nodes.Concrete, the basis of geographical position priority algorithm can pass through IP address prefix (the common approaching equipment of physical location, the prefix of its IP also can be mated), the geographical location information by carrying in the IP message, survey methods such as (according to the time delay of surveying, time delay is little represent that correspondingly the position is approaching) by time-delay initiatively.
B) use the disposal ability priority algorithm, the media content that provides with respect to needs is provided, the MSF of its providing capability optimum (for example according to MSF1 and MSF2, the loading condition of this moment is selected, as taking of the taking of CPU, internal memory etc.).
Further, border broadcast nodes can be obtained from a plurality of MSF (MSF1 and MSF2) with media content simultaneously.Can under the prerequisite that guarantees reliability, provide content to obtain efficient like this, shorten the acquisition time of content, can not cause the content acquisition time elongated because of certain MSF node failure.
The border broadcast nodes that the embodiment of the invention provides also has caching function, when the end-user access frequency high during to the threshold values that defines, border broadcast nodes will be carried out buffer memory to this media content, thereby when having realized the service request as the terminal use who receives this media content of subsequent access, this media content that just can directly extract buffer memory sends to the user, thereby further, improved access efficiency, reduced the waste of the network bandwidth.
Further, the caching function of the border broadcast nodes that the embodiment of the invention provides can also carry out buffer memory to this media content according to the sign in the media content or according to the information such as critical field in the media content when specific implementation.The embodiment of the invention does not limit the purpose of border broadcast nodes buffered media content, can formulate cache policy according to system's needs, and correspondingly, border broadcast nodes is carried out corresponding buffer memory action according to the cache policy of formulating.
Referring to Fig. 6, provide the information interaction schematic diagram of the method for content based on reciprocity storage networking for what the embodiment of the invention provided.Especially, after border broadcast nodes is received service request, use the peer-to-peer network algorithm to send the content search request to reciprocity storage networking according to the sign of the media content in the request.The equity storage networking is inquired about according to content search request and corresponding peer-to-peer network algorithm, and Query Result is returned to border broadcast nodes, comprises the content-location information of corresponding MSF in the Query Result.When content stores during at a plurality of MSF node, border broadcast nodes can MSF of policy selection.
Referring to Fig. 7, provide the information interaction schematic diagram of the method for when MSF lost efficacy, obtaining data.As shown in Figure 7, after border broadcast nodes is received service request, use the peer-to-peer network algorithm to send the content search request to reciprocity storage networking according to the sign of the media content in the request.The equity storage networking is inquired about according to content search request and corresponding peer-to-peer network algorithm, and Query Result is returned to border broadcast nodes, comprises the content-location information of corresponding MSF in the Query Result.When content stores during at a plurality of MSF node, border broadcast nodes can MSF of policy selection, and obtain media content to the MSF of this initial selected, if inefficacy has taken place the MSF of this initial selected (is example with MSF1 among the figure, as causing media content service etc. can't be provided) owing to MSF1 equipment self failure and other reasons, border broadcast nodes can select to have to other MSF (among the figure be example with MSF2) acquisition request media content of this media content
In sum, what the embodiment of the invention provided provides the method for content based on reciprocity storage networking, introduce reciprocity storage networking, provide media content by reciprocity storage networking to the terminal use, thereby realized significantly reducing the storage redundancy in the existing content network, reduce Network Management and maintenance cost, improve the reliability of network.
Embodiment 2
Referring to Fig. 8, the embodiment of the invention provides the method that content is provided based on reciprocity storage networking, still the structural representation that provides with Fig. 4 is that example describes, be behind the peer-to-peer storage node MSF of distribute media content in the reciprocity storage networking with the difference of embodiment 1, by the functional entity that increases (for example, service discovering and selection information unit), the positional information of each media content to be announced to the terminal use, particular content is as follows:
Step 201: in advance with among the peer-to-peer storage node MSF of distribute media content in the reciprocity storage networking.
Step 202: after in advance distribute media content being arrived the peer-to-peer storage node MSF in the reciprocity storage networking, the positional information of each media content place MSF is announced to service discovering and selection information unit.
For example, media content 1 is distributed among MSF1 and the MSF2, correspondingly, with the resource identification of media content 1 and the address designation of MSF, is handed down to service discovering and selects information unit.
Step 203: service discovering and the positional information of selecting information unit with the media content place MSF that receives are transmitted to the terminal use.
Wherein, this step is specifically as follows service discovering and the form of selecting information unit by menu when specific implementation, the positional information of each media content place MSF is provided to the terminal use.Referring to table 1, provide a kind of signal table.
Table 1
| The sign of media content | The media content title | Positional information |
| ??content-id-a | ??A | ??MSF1、MSF2 |
| ??content-id-b | ??B | ??MSF1 |
| ??content-id-c | ??C | ??MSF3 |
Wherein, service discovering in the embodiment of the invention and selection information unit, as a functionality entities, can realize this function by server is set separately, can be integrated in existing certain station server the function of position (sign) information that realizes sign that it obtains the media content in the reciprocity storage networking and media content place MSF and carry out the function that the positional information of the sign of media content and media content place MSF provides to the terminal use.The embodiment of the invention not limiting terminal user is obtained the concrete mode and the method for media content corresponding position information, can also obtain for form by other, as the people for obtaining.
Step 204: the terminal use sends service request to SCF, wherein, carries the sign of media content and the positional information of media content place MSF in this service request.
After step 205:SCF receives service request, this service request is transmitted to the border broadcast nodes of selecting according to preset rules.
Step 206: after border broadcast nodes is received service request, according to the sign of the media content that carries in this service request and the positional information of media content place MSF, corresponding M SF node acquisition request media content in reciprocity storage networking, the sign of carrying media content in this request.
Step 207: after corresponding M SF node is received the request of border broadcast nodes transmission in the reciprocity storage networking,, provide corresponding media content to border broadcast nodes according to the sign of the media content that carries in this request.
Step 208: behind the media content that border broadcast nodes reception MSF returns, after this media content coding fluidisation, offer the terminal use.
The border broadcast nodes that the embodiment of the invention provides also has caching function, when the end-user access frequency high during to the threshold values that defines, border broadcast nodes will be carried out buffer memory to this media content, thereby when having realized the service request as the terminal use who receives this media content of subsequent access, this media content that just can directly extract buffer memory sends to the user, thereby further, improved access efficiency, reduced the waste of the network bandwidth.
Further, the caching function of the border broadcast nodes that the embodiment of the invention provides can also carry out buffer memory to this media content according to the sign in the media content or according to the information such as critical field in the media content when specific implementation.The embodiment of the invention does not limit the purpose of border broadcast nodes buffered media content, can formulate cache policy according to system's needs, and correspondingly, border broadcast nodes is carried out corresponding buffer memory action according to the cache policy of formulating.
Referring to Fig. 9, the information interaction schematic diagram of the method for obtaining data that the embodiment of the invention provides.After border broadcast nodes is received service request, obtain content from reciprocity storage networking according to the sign of the media content in the request and the location information request of media content place MSF.When content stores during at a plurality of MSF node, border broadcast nodes can MSF of policy selection.
Referring to Figure 10, the embodiment of the invention also provides the information interaction schematic diagram of the method for obtaining data after MSF lost efficacy.
After border broadcast nodes is received service request, obtain content from reciprocity storage networking according to the sign of the media content in the request and the location information request of media content place MSF.When content stores during at a plurality of MSF node, border broadcast nodes can MSF of policy selection, and to this initially selected MSF acquisition request media content, the back if initial selected MSF lost efficacy (among the figure be example with MSF1), border broadcast nodes can be according to the sign of the media content that carries in the request, selects the MSF (the figure be example with MSF2) that has this media content from other to obtain media content.
In sum, what the embodiment of the invention provided provides the method for content based on reciprocity storage networking, introduce reciprocity storage networking, provide media content by reciprocity storage networking to the terminal use, thereby realized significantly reducing the storage redundancy in the existing content network, reduced the reliability of Network Management and maintenance cost, raising network.
Embodiment 3
Referring to Figure 11, the embodiment of the invention provides a kind of border broadcast nodes, comprising:
Receiver module is used for the service request that the receiving terminal user sends;
Acquisition module is used for the sign of the media content that carries according to the service request that receiver module receives, obtains media content to peer-to-peer storage node
Module is provided, is used for the media content that acquisition module obtains is offered the terminal use.
(1), during the sign of the media content desiring to obtain as carried terminal user in the service request,
The sign of the media content that the terminal use who carries in the service request that acquisition module receives according to receiver module desires to obtain and default peer-to-peer network algorithm obtain the target peer-to-peer storage node, obtain media content from least one target peer-to-peer storage node.
This acquisition module specifically comprises:
Acquiring unit is used for the sign of the media content desiring to obtain according to the terminal use that the service request that receiver module receives is carried and default peer-to-peer network algorithm, obtains the target peer-to-peer storage node;
First selected cell is used for the target peer-to-peer storage node of selecting acquiring unit to obtain according to the geographical position priority algorithm, obtains media content from least one target peer-to-peer storage node of selecting;
Second selected cell is used for the target peer-to-peer storage node of selecting acquiring unit to obtain according to the disposal ability priority algorithm, obtains media content from least one target peer-to-peer storage node of selecting.
(2), in service request, both carried the sign of the media content that the terminal use desires to obtain, when carrying the positional information of media content place peer-to-peer storage node again,
Acquisition module specifically is used for the service request according to the receiver module reception, obtains media content from the peer-to-peer storage node of at least one positional information correspondence.
Further, referring to Figure 12, the border broadcast nodes that the embodiment of the invention provides also comprises cache module, and cache module is used for the media content that the buffer memory acquisition module obtains.
This cache module specifically comprises:
Judging unit is used to judge whether the frequency that media content is acquired reaches pre-set threshold value;
Buffer unit, be used for when the result of judgment unit judges for being, buffered media content then.
By increasing this cache module, thereby when having realized the service request as the terminal use who receives this media content of subsequent access, this media content that just can directly extract buffer memory sends to the user, thereby further, has improved access efficiency, reduced the waste of the network bandwidth.
The embodiment of the invention provides cache module in the border broadcast nodes when specific implementation, can also carry out buffer memory to this media content according to the sign in the media content or according to the information such as critical field in the media content.The embodiment of the invention does not limit the purpose of buffered media content, can formulate cache policy according to system's needs, and correspondingly, this cache module is carried out corresponding buffer memory action according to the cache policy of formulating.
In sum, the border broadcast nodes that the embodiment of the invention provides, utilize this border broadcast nodes to get access to media content in the reciprocity storage networking, then this media content is offered the terminal use, thereby realized significantly reducing the storage redundancy in the existing content network, reduced the reliability of Network Management and maintenance cost, raising network.
Embodiment 4
Referring to Figure 13, the embodiment of the invention provides a kind of terminal equipment, and terminal equipment comprises:
Acquisition module is used to obtain the positional information of media content place peer-to-peer storage node;
Sending module is used to send service request, carries the sign of the media content that the user desires to obtain and the positional information of the media content place peer-to-peer storage node that acquisition module obtains in the service request.
The terminal equipment that the embodiment of the invention provides, the sign by in service request from user, carrying the media content of desiring to obtain and the positional information of this media content place peer-to-peer storage node, realize that border broadcast nodes is according to the positional information in the service request, obtain the media content of the peer-to-peer storage node storage of positional information correspondence, thereby improved the speed of obtaining media content from reciprocity storage networking, improved the efficient of obtaining of obtaining media content.
Embodiment 5
Referring to Figure 14, the embodiment of the invention provides a kind of discharge device, and discharge device comprises:
Policy module is used to obtain distribution policy;
Distribution module is used for the distribution policy that obtains according to policy module, with the peer-to-peer storage node of distribute media content in the reciprocity storage networking.
Wherein, above-mentioned policy module comprises:
First policy unit is used to obtain first distribution policy, and first distribution policy is according to the load of the peer node in the distribution scope, and media content is evenly distributed;
Correspondingly, distribution module comprises:
First Dispatching Unit is used for first distribution policy that obtains according to first policy unit, and media content evenly is distributed to peer-to-peer storage node in the reciprocity storage networking.
Wherein, above-mentioned policy module comprises:
Second policy unit is used to obtain second distribution policy, and second distribution policy is according to default peer-to-peer network algorithm,, distribute media content is arrived the target peer-to-peer storage node;
Correspondingly, distribution module comprises:
Second Dispatching Unit is used to obtain the target peer-to-peer storage node, and second distribution policy according to second policy unit is obtained arrives the target peer-to-peer storage node with distribute media content.
Wherein, second Dispatching Unit specifically comprises:
Obtain subelement, be used to obtain the sign of media content to be distributed, and the sign of obtaining the target peer-to-peer storage node according to default peer-to-peer network algorithm;
The mapping subelement, the sign that is used for obtaining the media content that subelement obtains is mapped to the sign of at least one target peer-to-peer storage node;
The distribution subelement is used for according to the mapping relations of obtaining after the map unit mapping, with distribute media content to the target peer-to-peer storage node.
The discharge device that describing the embodiment of the invention in detail below provides is how to realize carrying out distribute media content to peer-to-peer storage node, this equity storage networking is when carrying out the distribution of media content, can realize the distribution of media content according to concrete network configuration system needs, for example on the peer-to-peer storage node MSF of distribute media content different range in the peer-to-peer network, can also can be the distribution of the content in the regional extent for carrying out the content distribution in the network-wide basis.
A) can media content evenly be distributed to each MSF according to the load of each peer-to-peer storage node in the reciprocity storage networking;
B) also can be according to specific peer-to-peer network algorithm, for example P2P (Peer to Peer, peer node)/DHT (DistributedHash Table, distributing Hash table technology algorithm) carries out distribution calculating, according to the target MSF of result of calculation selection distribution, realize the equilibrium distribution of media content.Be specially: each peer-to-peer storage node has node identification (Node-ID) (corresponding present embodiment, be respectively Node-ID-MSF1, Node-ID-MSF2 ..., Node-ID-MSFm ..., Node-ID-MSFn), media content has resource identification (corresponding present embodiment is Resource-ID), according to default mapping algorithm, Resource-ID is mapped to Node-ID-MSF1 and Node-ID-MSF2 respectively, and media content stores MSF1 and MSF2 node into according to mapping relations distributions.
The discharge device that the embodiment of the invention provides, successfully realize purpose by this discharge device to reciprocity storage networking distributing media content, realize the distribution of media content having improved the efficient of distribution according to the configuration needs of system, avoided the problems such as redundancy that occur in the distribution procedure effectively.Correspondingly, border broadcast nodes also can be by getting access to the media content in the reciprocity storage networking, then this media content is offered the terminal use, thereby realized significantly reducing the storage redundancy in the existing content network, reduced the purpose of the reliability of Network Management and maintenance cost, raising network.
Embodiment 6
Referring to Figure 15, the embodiment of the invention provides the system that content is provided based on reciprocity storage networking, and wherein, this system comprises: border broadcast nodes and at least one peer-to-peer storage node; Peer-to-peer storage node constitutes reciprocity storage networking;
Border broadcast nodes is used for the service request that the receiving terminal user sends, and according to the sign of the media content that carries in the service request, after peer-to-peer storage node is obtained media content, the media content that obtains is offered the terminal use;
Peer-to-peer storage node is used to store the media content according to default distribution policy distribution; And, provide media content to border broadcast nodes according to the request of border broadcast nodes.
Wherein, above-mentioned border broadcast nodes specifically comprises:
Receiver module is used for the service request that the receiving terminal user sends;
Acquisition module is used for the sign of the media content that carries according to the service request that receiver module receives, obtains media content to peer-to-peer storage node;
Module is provided, is used for the media content that acquisition module obtains is offered the terminal use.
(1), during the sign of the media content of desiring to obtain as carried terminal user in the service request, the acquisition module of above-mentioned border broadcast nodes specifically is used for the sign of the media content desiring to obtain according to the terminal use that the service request that receiver module receives is carried and default peer-to-peer network algorithm, obtain the target peer-to-peer storage node, obtain media content from least one target peer-to-peer storage node.
This acquisition module specifically comprises:
Acquiring unit is used for the sign of the media content desiring to obtain according to the terminal use that the service request that receiver module receives is carried and default peer-to-peer network algorithm, obtains the target peer-to-peer storage node;
First selected cell is used for the target peer-to-peer storage node of selecting acquiring unit to obtain according to the geographical position priority algorithm, obtains media content from least one target peer-to-peer storage node of selecting;
Second selected cell is used for the target peer-to-peer storage node of selecting acquiring unit to obtain according to the disposal ability priority algorithm, obtains media content from least one target peer-to-peer storage node of selecting.
(2), during the positional information of the peer-to-peer storage node of the sign of the media content of desiring to obtain as carried terminal user in the service request and the media content that storage is desired to obtain, the acquisition module of above-mentioned border broadcast nodes specifically is used for the service request according to the receiver module reception, obtains media content from the peer-to-peer storage node of at least one positional information correspondence.
Further, the border broadcast nodes in the system that the embodiment of the invention provides also comprises cache module, and cache module is used for the media content that buffer memory obtains, and wherein, above-mentioned cache module specifically comprises:
Judging unit is used to judge whether the frequency that media content is acquired reaches pre-set threshold value;
Buffer unit, be used for when the result of judgment unit judges for being, buffered media content then.
By increasing this cache module, thereby when having realized the service request as the terminal use who receives this media content of subsequent access, this media content that just can directly extract buffer memory sends to the user, thereby further, has improved access efficiency, reduced the waste of the network bandwidth.
The embodiment of the invention provides cache module when specific implementation, can also carry out buffer memory to this media content according to the sign in the media content or according to the information such as critical field in the media content.The embodiment of the invention does not limit the purpose of buffered media content, can formulate cache policy according to system's needs, and correspondingly, this cache module is carried out corresponding buffer memory action according to the cache policy of formulating.
Referring to Figure 16, further, for the storage of the media content of realizing the peer-to-peer storage node in the reciprocity storage networking, system also comprises discharge device, and this discharge device specifically comprises:
Policy module is used to obtain distribution policy;
Distribution module is used for the distribution policy that obtains according to policy module, with the peer-to-peer storage node of distribute media content in the reciprocity storage networking.
Wherein, above-mentioned policy module comprises:
First policy unit is used to obtain first distribution policy, and first distribution policy is according to the load of the peer node in the distribution scope, and media content is evenly distributed;
Correspondingly, distribution module comprises:
First Dispatching Unit is used for first distribution policy that obtains according to first policy unit, and media content evenly is distributed to peer-to-peer storage node in the reciprocity storage networking.
Wherein, above-mentioned policy module comprises:
Second policy unit is used to obtain second distribution policy, and second distribution policy is according to default peer-to-peer network algorithm,, distribute media content is arrived the target peer-to-peer storage node;
Correspondingly, distribution module comprises:
Second Dispatching Unit is used to obtain the target peer-to-peer storage node, and second distribution policy according to second policy unit is obtained arrives the target peer-to-peer storage node with distribute media content.
Wherein, second Dispatching Unit specifically comprises:
Obtain subelement, be used to obtain the sign of media content to be distributed, and the sign of obtaining the target peer-to-peer storage node according to default peer-to-peer network algorithm;
The mapping subelement, the sign that is used for obtaining the media content that subelement obtains is mapped to the sign of at least one target peer-to-peer storage node;
The distribution subelement is used for according to the mapping relations of obtaining after the map unit mapping, with distribute media content to the target peer-to-peer storage node.
In sum, what the embodiment of the invention provided provides the system of content based on reciprocity storage networking, introduce reciprocity storage networking, provide media content by reciprocity storage networking to the terminal use, thereby realized significantly reducing the storage redundancy in the existing content network, reduced the reliability of Network Management and maintenance cost, raising network.
Embodiment 7
The embodiment of the invention provides a kind of reciprocity storage networking memory node, is used to store the media content according to default distribution policy distribution; And provide media content to border broadcast nodes according to the request of border broadcast nodes.
In sum, the technical scheme that the embodiment of the invention provides, introduce reciprocity storage networking, provide media content by reciprocity storage networking to the terminal use, thereby realized the elimination storage redundancy, improve the service efficiency of storage resources, avoid the number of copies of a large amount of intermediate level cache nodes in fairly large stratification CDN.Only there are maximum 2 to 3 copies (is in order to guarantee reliability more than 1 copy) in same media content in reciprocity storage networking, efficiently solves in large-scale stratification CDN the problem of a large amount of number of copies that are arranged in the intermediate level of appearance; Also make management maintenance oversimplify.Only need when the media content initial release, be distributed to a plurality of peer-to-peer storage node to balance of media content, not need to carry out again other distribution bookkeeping afterwards.Border broadcast nodes does not need to distribute in advance yet, after obtaining certain media content from storage networking for the first time, high during as the user capture frequency to the threshold values that defines, then this media content is buffered on the border broadcast nodes, a suitable cache management promptly can be realized this function; Further, promoted the reliability of network, the storage networking Single Point of Faliure does not influence business; Each memory node can be the whole network user service, supports the region content distribution management flexibly and promotes content to share.
All or part of step in the embodiment of the invention can utilize software to realize that corresponding software programs can be stored in the storage medium that can read, as CD or hard disk etc.
The above only is specific embodiments of the invention;, for those skilled in the art, not all under the prerequisite that does not break away from the principle of the invention in order to restriction the present invention; any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (27)
1, a kind ofly provide the method for content, it is characterized in that, comprising based on reciprocity storage networking:
According to default distribution policy, in peer-to-peer storage node, described peer-to-peer storage node constitutes reciprocity storage networking with distribute media content;
The sign of the media content that carries in the service request of border broadcast nodes according to the terminal use is obtained media content from reciprocity storage networking;
Described border broadcast nodes offers described terminal use with the media content that obtains.
2, as claimed in claim 1ly provide the method for content based on reciprocity storage networking, it is characterized in that: the distribution policy that described basis is default in peer-to-peer storage node, specifically comprises distribute media content:
According to default the whole network distribution scope, in distribute media content at least one peer-to-peer storage node in described the whole network distribution scope;
Or;
According to default area distribution scope, in distribute media content at least one peer-to-peer storage node in the described area distribution scope.
3, as claimed in claim 2ly provide the method for content, it is characterized in that, described media content is distributed in described distribution scope, specifically comprise based on reciprocity storage networking:
Load according to peer-to-peer storage node in the reciprocity storage networking evenly is distributed to media content in the peer-to-peer storage node;
Or;
According to default peer-to-peer network algorithm, obtain the information of target peer-to-peer storage node, with distribute media content in described target peer-to-peer storage node.
4, as claimed in claim 3ly provide the method for content based on reciprocity storage networking, it is characterized in that, the peer-to-peer network algorithm that described basis is default obtains the information of target peer-to-peer storage node, specifically comprises:
According to the node identification of the sign and the peer-to-peer storage node of described media content, the sign of described media content is mapped to the node identification of at least one peer-to-peer storage node;
According to described mapping relations, determine the target peer-to-peer storage node that described media content need be distributed to.
5, the method that content is provided based on reciprocity storage networking as claimed in claim 1, it is characterized in that, the sign of the media content that carries in the service request of described border broadcast nodes according to the terminal use is obtained media content from reciprocity storage networking, specifically comprises:
Border broadcast nodes receiving terminal service request from user, the sign of the media content that the carried terminal user desires to obtain in the described service request; According to the default peer-to-peer network algorithm and the sign of the described media content of desiring to obtain, obtain the information of target peer-to-peer storage node, obtain media content from least one described target peer-to-peer storage node.
6, the method that content is provided based on reciprocity storage networking as claimed in claim 5, it is characterized in that, when a plurality of target peer-to-peer storage node store the described media content of desiring to obtain, describedly obtain media content from least one described target peer-to-peer storage node, be specially:
Described border broadcast nodes is selected at least one target peer-to-peer storage node according to the geographical position priority algorithm, obtains media content from the target peer-to-peer storage node of selecting;
Or;
Described border broadcast nodes is selected at least one target peer-to-peer storage node according to the disposal ability priority algorithm, obtains media content from the target peer-to-peer storage node of selecting.
7, as claimed in claim 5ly provide the method for content, it is characterized in that, describedly obtain steps such as media content, be specially to the target peer-to-peer storage node of selecting based on reciprocity storage networking:
Obtain media content to the first target peer-to-peer storage node of selecting,, then obtain media content to next target peer-to-peer storage node of selecting if obtain the media content failure to the described first target peer-to-peer storage node.
8, as claimed in claim 1ly provide the method for content, it is characterized in that the distribution policy that described basis is default will also comprise after the step of distribute media content in peer-to-peer storage node based on reciprocity storage networking:
Location information notification terminal use with the sign and the described media content place peer-to-peer storage node of described media content;
Correspondingly;
Described border broadcast nodes is according to terminal use's service request, obtains the step of media content from described reciprocity storage networking, specifically comprises:
Border broadcast nodes receiving terminal service request from user, the positional information of the sign of the media content that the carried terminal user desires to obtain in the described service request and described media content place peer-to-peer storage node;
According to described service request, obtain the desire media content to the peer-to-peer storage node of at least one described positional information correspondence.
9, as claimed in claim 1ly provide the method for content based on reciprocity storage networking, it is characterized in that, described border broadcast nodes offers described terminal use's step with the media content that obtains, and is specially:
Described border broadcast nodes with the media content that obtains coding fluidisation after, offer described terminal use.
10, as claimed in claim 1ly provide the method for content, it is characterized in that described method also comprises based on reciprocity storage networking:
The media content that described border broadcast nodes buffer memory obtains.
11, as claimed in claim 1ly provide the method for content, it is characterized in that the step of the media content that described border broadcast nodes buffer memory obtains is specially based on reciprocity storage networking:
Border broadcast nodes judges whether the frequency that described media content is acquired reaches predetermined threshold value, if, the described media content of buffer memory then.
12, a kind of border broadcast nodes is characterized in that, described node comprises:
Receiver module is used for the service request that the terminal use sends;
Acquisition module is used for the sign of the media content that carries according to the service request that described receiver module receives, obtains media content to described peer-to-peer storage node;
Module is provided, is used for the media content that described acquisition module obtains is offered described terminal use.
13, border broadcast nodes as claimed in claim 12, it is characterized in that, described acquisition module specifically is used for sign and the default peer-to-peer network algorithm and the sign of the described media content of desiring to obtain of the media content that carries according to the service request that described receiver module receives, obtain the target peer-to-peer storage node, obtain media content at least one described target peer-to-peer storage node.
14, border broadcast nodes as claimed in claim 13 is characterized in that, described acquisition module specifically comprises:
Acquiring unit is used for carrying according to the service request that described receiver module receives sign and the default peer-to-peer network algorithm and the sign of the described media content of desiring to obtain of media content, obtains the target peer-to-peer storage node;
First selected cell is used for the target peer-to-peer storage node of selecting described acquiring unit to obtain according to the geographical position priority algorithm, obtains the media content of desiring to obtain at least one described target peer-to-peer storage node of selecting;
Second selected cell is used for storing peer node according to the target equity that the disposal ability priority algorithm selects described acquiring unit to obtain, and obtains media content at least one described target peer-to-peer storage node of selecting.
15, border broadcast nodes as claimed in claim 12, it is characterized in that, described acquisition module specifically is used for the sign of the media content that carries according to the service request that described receiver module receives and the positional information of described media content place peer-to-peer storage node, obtains media content to the peer-to-peer storage node of at least one described positional information correspondence.
16, border broadcast nodes as claimed in claim 12 is characterized in that, described border broadcast nodes also comprises cache module, and described cache module is used for the media content that the described acquisition module of buffer memory obtains.
17, border broadcast nodes as claimed in claim 16 is characterized in that, described cache module specifically comprises:
Judging unit is used to judge whether the frequency that described media content is acquired reaches threshold values;
Buffer unit, be used for when the result of described judgment unit judges for being, the described media content of buffer memory then.
18, a kind of terminal equipment is characterized in that, described terminal equipment comprises:
Acquisition module is used to obtain the positional information of media content place peer-to-peer storage node;
Sending module is used to send service request, carries the sign of the media content that the user desires to obtain and the positional information of the media content place peer-to-peer storage node that described acquisition module obtains in the described service request.
19, a kind of discharge device is characterized in that, described discharge device comprises:
Policy module is used to obtain distribution policy;
Distribution module is used for the distribution policy that obtains according to described policy module, with the peer-to-peer storage node of distribute media content in the reciprocity storage networking.
20, discharge device as claimed in claim 19 is characterized in that, described policy module comprises:
First policy unit is used to obtain first distribution policy, and described first distribution policy is according to the load of the peer node in the distribution scope, and media content is evenly distributed;
Correspondingly, described distribution module comprises:
First Dispatching Unit is used for first distribution policy that obtains according to described first policy unit, and media content evenly is distributed to peer-to-peer storage node in the reciprocity storage networking.
21, discharge device as claimed in claim 19 is characterized in that, described policy module comprises:
Second policy unit is used to obtain second distribution policy, and described second distribution policy is according to default peer-to-peer network algorithm, and distribute media content is arrived described target peer-to-peer storage node;
Correspondingly, described distribution module comprises:
Second Dispatching Unit is used to obtain the target peer-to-peer storage node, and second distribution policy according to described second policy unit is obtained arrives described target peer-to-peer storage node with distribute media content.
22, discharge device as claimed in claim 21 is characterized in that, described second Dispatching Unit specifically comprises:
Obtain subelement, be used to obtain the sign of media content to be distributed, and the sign of obtaining the target peer-to-peer storage node according to default peer-to-peer network algorithm;
The mapping subelement is used for the described sign of obtaining the described media content that subelement obtains is mapped to the sign of at least one target peer-to-peer storage node;
The distribution subelement is used for the mapping relations obtained according to after the mapping of described map unit, with described distribute media content to described target peer-to-peer storage node.
23, a kind ofly provide the system of content, it is characterized in that described system comprises: border broadcast nodes and at least one peer-to-peer storage node based on reciprocity storage networking; Described peer-to-peer storage node constitutes reciprocity storage networking;
Described border broadcast nodes, be used for the service request that the receiving terminal user sends, according to the sign of the media content that carries in the described service request, after described peer-to-peer storage node is obtained media content, the described media content that obtains is offered described terminal use;
Described peer-to-peer storage node is used to obtain the media content according to default distribution policy distribution; And, provide described media content to described border broadcast nodes according to the request of described border broadcast nodes.
24, as claimed in claim 23ly provide the system of content, it is characterized in that described border broadcast nodes specifically comprises based on reciprocity storage networking:
Receiver module is used for the service request that the terminal use sends;
Acquisition module is used for the sign of the media content that carries according to the service request that described receiver module receives, obtains media content to described peer-to-peer storage node;
Module is provided, is used for the media content that described acquisition module obtains is offered described terminal use.
25, the system that content is provided based on reciprocity storage networking as claimed in claim 24, it is characterized in that, described acquisition module specifically is used for sign and the default peer-to-peer network algorithm and the sign of the described media content of desiring to obtain of the media content that carries according to the service request that described receiver module receives, obtain the target peer-to-peer storage node, obtain media content at least one described target peer-to-peer storage node.
26, the system that content is provided based on reciprocity storage networking as claimed in claim 24, it is characterized in that, described acquisition module specifically is used for the sign of the media content that carries according to the service request that described receiver module receives and the positional information of described media content place peer-to-peer storage node, obtains media content to the peer-to-peer storage node of at least one described positional information correspondence.
27, as claimed in claim 23ly provide the system of content, it is characterized in that described system also comprises based on reciprocity storage networking: discharge device, described discharge device specifically comprises:
Policy module is used to obtain distribution policy;
Distribution module is used for the distribution policy that obtains according to described policy module, with the peer-to-peer storage node of distribute media content in the reciprocity storage networking.
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| PCT/CN2009/072277 WO2009152754A1 (en) | 2008-06-16 | 2009-06-15 | Method, system and device for providing contents based on peer to peer network |
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| CN200810115067.4A CN101610162A (en) | 2008-06-16 | 2008-06-16 | A kind of method, system and equipment that content is provided based on reciprocity storage networking |
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