CN106101195B - Data distribution method and device - Google Patents
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- CN106101195B CN106101195B CN201610379383.7A CN201610379383A CN106101195B CN 106101195 B CN106101195 B CN 106101195B CN 201610379383 A CN201610379383 A CN 201610379383A CN 106101195 B CN106101195 B CN 106101195B
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Abstract
The embodiment of the invention discloses a data distribution method and a device, which are applied to a data center in a data distribution network, and the method comprises the following steps: receiving partial data aiming at target data sent by a data center which is one layer higher than the data center of the data center, and then receiving other partial data aiming at the target data sent by the data center which is the same layer as the data center according to the first information; merging the partial data with the other partial data to generate target data; judging whether the data center is the data center at the bottommost layer or not according to the second information; if not, splitting the target data according to the second information; and sending the split partial data to a data center which is lower than the data center of the data center according to a preset sending rule so that the data center at the bottommost layer obtains the target data. By applying the embodiment of the invention, the transmission time of the data can be reduced, and all data centers can receive the data sent by the highest data center.
Description
Technical Field
The present invention relates to the field of data distribution technologies, and in particular, to a data distribution method and apparatus.
Background
At present, many video websites provide video viewing services at home and abroad. The video website stores a large amount of video content in Data centers (IDC, Internet Data center), and the Data centers in different places provide services for end users in different places. (A data center, which may be understood as a large physical room, has many hosts inside, each providing services to the outside).
A large video service provider may store data on tens of thousands of machines in hundreds of data centers. The data can be accumulated into hundreds of millions of files, and hundreds of thousands of data are newly added every day. When the new data is sent to the target machine of each data center, hundreds of millions of data distributions are generated, and the rapid and reliable data distribution of the data is a problem to be faced. Data distribution refers to a process of transmitting target data to each data center hierarchically lower than the data center through certain logic steps and physical network paths by the highest-level data center.
The network topology of the existing data distribution is mostly tree-shaped structure. Fig. 1 is a schematic diagram of a tree structure of a data distribution network with higher hierarchy in the prior art. Assuming that each data center can provide an upload bandwidth of 1MB per second, the time required for a target data with a size of 1MB to be transmitted from the beijing data center to the tianjin data center is 2 seconds, and the time required for the target data to be transmitted to the zheng data center is 6 seconds. Fig. 2 is a schematic diagram of a hierarchical data distribution network tree structure in the prior art. Assuming that each data center can provide an upload bandwidth of 1MB per second, the time required for a file of 1MB in size to be transmitted from the beijing data center to the tianjin data center is 6 seconds, and the time required for the file to be transmitted to the zheng data center is 12 seconds. In the distribution system described above, the time for the target data to reach each data center is the sum of the times on the paths from the data center to the highest-level data center, and the target data distribution speed is relatively slow.
In addition, referring to fig. 1, the target data can be transmitted from the beijing data center to the zheng data center only through the beijing-tianjin-shijiazhuang-zheng route; if any one of the paths of the Beijing-Tianjin-Shizhuang-Zheng state or any one of the data centers of the Tianjin data center and the Shizhuang data center has a problem, the Zhengzhou data center and the corresponding lower data center cannot receive the target data. Referring to fig. 2, the target data can be transmitted from the beijing data center to the zheng data center only through the beijing-tianjin-zheng route; if any one of the paths on the Beijing-Tianjin-Zheng State path or the Tianjin data center has a problem, the Zheng State data center and the corresponding lower data center cannot receive the target data. Therefore, in the existing distribution network, if a fault point exists in the network, part of data centers cannot receive target data.
Disclosure of Invention
The embodiment of the invention aims to provide a data distribution method and a data distribution device, which are used for reducing the transmission time of data and enabling all data centers to receive data sent by a highest-layer data center.
In order to achieve the above object, an embodiment of the present invention discloses a data distribution method, which is applied to a data center in a data distribution network, wherein first information of a data center located at the same layer as the data center itself and second information of a data center located at a layer lower than the data center itself are stored in the data center;
the method comprises the following steps:
receiving partial data aiming at target data, which is sent by a data center one layer higher than the data center of the data center, wherein the partial data is split by the data center one layer higher than the data center of the data center according to the second information stored in the data center;
receiving other part of data aiming at the target data, which is sent by a data center in the same layer as the data center, according to the first information;
merging the partial data with the other partial data to generate the target data;
judging whether the data center is the data center at the bottommost layer or not according to the second information;
if not, splitting the target data according to the second information;
and sending the split partial data to a data center which is lower than the data center of the data center according to a preset sending rule so that the data center at the bottommost layer obtains the target data.
Preferably, the data centers with the same physical link attribute are located between the data center of the same layer and the data center of the highest layer.
Preferably, the physical link attributes are the same, and the physical link lengths are within the same length interval.
Preferably, the distances from the data centers located in the same layer to the data center of the highest layer are within the same range.
Preferably, the splitting the target data according to the second information includes:
determining the number of data centers which are lower than the data centers of the data centers according to the second information;
and splitting the target data into a plurality of partial data with the same data size according to the number.
In order to achieve the above object, an embodiment of the present invention further discloses a data distribution apparatus, which is applied to a data center in a data distribution network, and the apparatus includes: a storage module, a first receiving module, a second receiving module, a data synthesis module, a judgment module, a splitting module and a sending module, wherein,
the storage module is used for storing first information of a data center which is positioned at the same layer as the storage module and second information of a data center which is lower than the data center of the storage module by one layer;
the first receiving module is configured to receive partial data, which is sent by a data center one layer higher than the data center of the first receiving module and is for target data, where the partial data is split by the data center one layer higher than the data center of the first receiving module according to the second information stored in the first receiving module;
the second receiving module is used for receiving other part of data aiming at the target data, which is sent by a data center which is positioned at the same layer as the second receiving module according to the first information;
the data synthesis module is used for merging the partial data and the other partial data to generate the target data;
the judging module is used for judging whether the data center is the data center at the bottommost layer or not according to the second information;
the splitting module is used for splitting the target data according to the second information under the condition that the judgment result of the judging module is negative;
and the sending module is used for sending the split partial data to a data center lower than the data center of the sending module by one level according to a preset sending rule so that the data center of the lowest level can obtain the target data.
Preferably, the data centers located in the same layer refer to data centers with the same physical link attribute as the data center of the highest layer.
Preferably, the physical link attributes are the same, and the physical link lengths are within the same length interval.
Preferably, the data centers located in the same layer may also refer to data centers located in the same range from the data center of the highest layer.
Preferably, the splitting module is specifically configured to: under the condition that the judgment result of the judgment module is negative, determining the number of data centers which are lower than the data centers of the judgment module by one layer according to the second information; and according to the number, the splitting module splits the target data into a plurality of partial data with the same data size.
Typically, the target data format includes at least: video, audio, file, text, image, animation, etc.
The embodiment of the invention discloses a data distribution method and a device, which are applied to a data center in a data distribution network, wherein the data center stores first information of the data center which is positioned at the same layer as the data center and second information of the data center which is positioned at a layer lower than the data center; the data center receives partial data aiming at target data from a data center which is one layer higher than the data center of the data center, and receives other partial data aiming at the target data, which is sent by the data center which is the same layer as the data center according to the first information; and the data center combines all the received partial data to generate the target data. And the data center judges whether the data center is the bottommost data center according to the second information, if not, the data center splits the data according to the stored second information, and sends the split partial data to the lower-layer data center according to a preset sending rule.
By applying the technical scheme provided by the embodiment of the invention, the transmission time of data is reduced. And all data centers can receive the data sent by the highest-level data center.
Of course, it is not necessary for any product or method of practicing the invention to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a tree structure of a higher-level data distribution network in the prior art;
FIG. 2 is a schematic diagram of a tree structure of a data distribution network with lower levels in the prior art;
fig. 3 is a schematic diagram of data distribution of target data sent from a data center of a first tier to a data center of a third tier according to an embodiment of the present invention;
fig. 4 is a schematic diagram of data transmission between data centers of a second layer according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a data distribution method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a data distribution apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problem of the prior art, embodiments of the present invention provide a data distribution method and apparatus. First, a data distribution method provided in an embodiment of the present invention is described below.
It should be noted that the embodiment of the present invention is preferably applied to a data center in a data distribution network, where the data center stores first information of a data center on the same floor as the data center and second information of a data center lower than the data center.
Fig. 5 is a schematic flow chart of a data distribution method according to an embodiment of the present invention, including:
s101: and receiving partial data aiming at the target data, which is sent by a data center one layer higher than the data center of the data center, wherein the partial data is split by the data center one layer higher than the data center of the data center according to the second information stored in the data center.
The first information is the number of data centers which are positioned in the same layer as the own data center and identification information of the data centers which are positioned in the same layer as the own data center; the second information is the number of data centers one floor lower than the own data center and the identification information of the data centers one floor lower than the own data center.
In practical applications, the data centers located in the same layer may be the data centers with the same physical link property as the data center of the highest layer. Specifically, the physical link attributes are the same, and the physical link lengths may be in the same length interval, or the distances to the data center of the highest layer may be in the same range.
S102: and receiving other part of data aiming at the target data, which is sent by a data center in the same layer as the data center, according to the first information. And the data center sends partial data received by the data center to other data centers on the same layer as the data center according to the identification information in the first information, and receives other partial data aiming at the target data sent by other data centers on the same layer.
S103: and merging the partial data with the other partial data to generate the target data.
S104: and judging whether the own data center is the data center at the bottommost layer or not according to the second information, and if not, executing S105.
S105: and splitting the target data according to the second information.
Specifically, in practical application, the target data is split according to the second information, and the number of data centers one layer lower than the own data center can be determined according to the second information; and splitting the target data into a plurality of partial data with the same data size according to the number.
S106: and sending the split partial data to a data center which is lower than the data center of the data center according to a preset sending rule so that the data center at the bottommost layer obtains the target data.
In practical application, the preset sending rule may be that the data center of the previous layer sends each split part of data to the data center of the next layer, or that the data center of the previous layer sends the split part of data to only one data center of the next layer, or that the data center of the previous layer sends the split parts of data to several data centers of the next layer. It is also possible that the data of the upper layer only sends part of the data to some data centers of the lower layer.
It should be noted that, the embodiment of the present invention does not limit the preset sending rule, and any possible implementation manner may be applied to the present application.
The data distribution network is assumed to have 18 data centers in total, wherein the number of the data centers on the first layer (highest layer) is 1, the number of the data centers on the second layer is 6, the number of the data centers on the third layer (lowest layer) is 11, the bandwidth of each data center is 1MB/s, and the size of target data is 1 MB.
Wherein, the first layer data center is: beijing; the second layer data center is Shijiazhuang, Shenyang, Tianjin, Changchun, Jinzhou and Taiyuan; the third level of data centers are Hangzhou, Chengdu, Xian, Guangzhou, Nanjing, Zhengzhou, Harbin, Chongqing, Suzhou and Luoyang, respectively.
In the following description, an example of any one of the third-tier data centers is given, and in this case, only the number of data centers on the same tier as the data center itself is stored in the data center.
First, the data center receives a part of data sent by a second layer data center, where the part of data is 1/11MB data after the second layer data center is split according to the number of third layer data centers.
At this time, the second-layer data center may be regarded as one data center M, which corresponds to a bandwidth of 6MB/s for the data center M, 1MB of data is divided into 11 shares, and each share of 1/11MB of data is simultaneously transmitted to 11 data centers of the next layer, so that the time required for each data center of the next layer to receive 1/11MB of data is: 1/11/(6/11) ═ 1/6 s. It can be seen that the time required for the data center of the third layer to receive the data transmitted by the previous layer is only related to the number of the data centers of the second layer.
Further, it can be deduced that the time required for the upper layer to transmit part of the data to the lower layer satisfies the following formula:
Ta＝S/(Nn-1*B)；
wherein Ta is the time required by the n-1 th layer to transmit partial data to the n-th layer, and S is the size of the transmitted data; b is the bandwidth of the data center; n is a radical ofn-1The number of the data centers of the n-1 th layer.
When the data center receives 1/11MB data sent by a data center of a previous layer, and receives the remaining 10/11MB data sent by the data center of the same layer, the time required for receiving 1/11MB data sent by each data center of the same layer is as follows: 1/11MB/(1MB/s) ═ 1/11 s. The time required to receive the remaining 10/11MB of data is 10/11 s.
It can be derived that the time required for the remaining data to be transmitted by the same layer satisfies the following equation:
Tb＝(Nn-1)S/(Nn*B)；
wherein Tb is the time required by the nth layer to transmit the remaining data, and S is the size of the transmitted data; b is the bandwidth of the data center; n is a radical ofnThe number of the nth layer data centers.
Further, the time required for the entire data to be transmitted from the previous layer to the next layer is Tx ═ Ta + Tb.
Furthermore, the total transmission time required for the data to be transmitted from the highest-level data center to the lowest-level data center is as follows:
the time required for the data center of the third tier to receive the 1MB of data transmitted by the data center of the previous tier is 1/6s +10/11s ≈ 1.08 s.
Similarly, the time required for the second layer data center to receive 1MB of data transmitted by the previous layer data center is 1s +5/6s ≈ 1.83 s.
The time required for the highest layer to transfer 1MB of data to the lowest layer is 1.83+ 1.08-2.91 s. Less time 6s than the prior art corresponding to fig. 1 and less time 12s than the prior art corresponding to fig. 2. Thus saving the transmission time of data.
Specifically, there are 18 data centers in the data distribution network, where the number of data centers in the first layer (highest layer) is 1, the number of data centers in the second layer is 6, the number of data centers in the third layer (lowest layer) is 11, data sent by the highest data center to the lowest data center is shown in fig. 3, and data transmitted between the same layer in the second data center is shown in fig. 4.
When a problem occurs in a certain data center or a certain path, taking fig. 3 as an example, assuming that a path from the banker to the hangzhou fails, the hangzhou cannot receive 1/11MB data sent by the banker, after partial data transmission of the same layer is performed, other data centers lack 1/11MB data, and at this time, other data centers can know that the path from the banker to the hangzhou fails, and therefore, data lacking 1/11MB can be requested from the upper layer, and each data center can finally obtain data sent by the highest-layer data center.
It should be noted that, the above description is given by taking 18 data centers as an example, and is only a specific example of the present invention, and the present invention is not limited thereto.
With the embodiment of the invention shown in fig. 5, the data transmission time is reduced; and meanwhile, all data centers can receive the data sent by the highest data center.
Corresponding to the above method embodiment, the embodiment of the present invention further provides a data distribution apparatus.
Fig. 6 is a schematic structural diagram of a data distribution apparatus according to an embodiment of the present invention, which may include: a storage module 104, a first receiving module 101, a second receiving module 102, a data synthesizing module 103, a judging module 105, a splitting module 106 and a sending module 107, wherein,
the storage module 104 is used for storing first information of a data center which is positioned at the same layer as the storage module and second information of a data center which is positioned at a layer lower than the storage module;
the data centers located in the same layer refer to the data centers with the same physical link attribute with the data center of the highest layer. The physical link attributes are the same, the physical link lengths are in the same length interval, and the physical link attributes are data centers with the distances to the data center of the highest layer in the same range.
The first information is the number of data centers which are positioned in the same layer as the own data center and identification information of the data centers which are positioned in the same layer as the own data center; the second information is the number of data centers one floor lower than the own data center and the identification information of the data centers one floor lower than the own data center.
The first receiving module 101 is configured to receive partial data, which is sent by a data center one layer higher than the own data center and is for target data, where the partial data is split by the data center one layer higher than the own data center according to the second information stored in the data center;
and a second receiving module 102, configured to receive, according to the first information, other part of data, which is sent by a data center located on the same layer as the second receiving module and is for the target data.
And a data synthesis module 103, configured to combine the partial data with the other partial data to generate the target data.
And the judging module 105 is configured to judge whether the own data center is the data center at the bottommost layer according to the second information.
A splitting module 106, configured to split the target data according to the second information if the determination result of the determining module 105 is negative.
Specifically, the splitting module 106 may specifically be configured to:
under the condition that the judgment result of the judgment module 105 is negative, determining the number of data centers which are one layer lower than the own data center according to the second information; and according to the number, the splitting module splits the target data into a plurality of partial data with the same data size.
A sending module 107, configured to send the split partial data to a data center that is lower than its own data center by one level according to a preset sending rule, so that the data center at the lowest level obtains the target data.
With the embodiment of the invention shown in fig. 6, the data transmission time is reduced; and meanwhile, all data centers can receive the data sent by the highest data center.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Those skilled in the art will appreciate that all or part of the steps in the above method embodiments may be implemented by hardware instructions related to a program, and the program may be stored in a computer-readable storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The data distribution method is applied to a data center in a data distribution network, wherein first information of the data center which is at the same layer with the data center and second information of the data center which is lower than the data center are stored in the data center;
the method comprises the following steps:
receiving partial data aiming at target data, which is sent by a data center one layer higher than the data center of the data center, wherein the partial data is split by the data center one layer higher than the data center of the data center according to the second information stored in the data center;
receiving other part of data aiming at the target data, which is sent by a data center in the same layer as the data center, according to the first information;
merging the partial data with the other partial data to generate the target data;
judging whether the data center is the data center at the bottommost layer or not according to the second information;
if not, splitting the target data according to the second information;
according to a preset sending rule, sending the split partial data to a data center which is lower than the data center of the data center, so that the data center at the bottommost layer obtains the target data;
the splitting the target data according to the second information includes:
determining the number of data centers which are lower than the data centers of the data centers according to the second information;
according to the number, splitting the target data into a plurality of partial data with the same data size;
the first information is the number of data centers which are positioned in the same layer as the self data center and identification information of the data centers which are positioned in the same layer as the self data center; the second information is the number of data centers one floor lower than the self data center and the identification information of the data centers one floor lower than the self data center;
the preset sending rule is that the data center of the upper layer sends the split part of data to only one data center of the lower layer.
2. The method of claim 1, wherein the physical link attributes between the data centers at the same level and the data center at the highest level are the same.
3. The method of claim 2, wherein the physical link attributes are the same as:
the physical link lengths are within the same length interval.
4. The method of claim 1, wherein the distances from the data centers located in the same floor to the data center of the highest floor are within the same range.
5. A data distribution apparatus, applied to a data center in a data distribution network, the apparatus comprising: a storage module, a first receiving module, a second receiving module, a data synthesis module, a judgment module, a splitting module and a sending module, wherein,
the storage module is used for storing first information of a data center which is positioned at the same layer as the storage module and second information of a data center which is lower than the data center of the storage module by one layer;
the first receiving module is configured to receive partial data, which is sent by a data center one layer higher than the data center of the first receiving module and is for target data, where the partial data is split by the data center one layer higher than the data center of the first receiving module according to the second information stored in the first receiving module;
the second receiving module is used for receiving other part of data aiming at the target data, which is sent by a data center which is positioned at the same layer as the second receiving module according to the first information;
the data synthesis module is used for merging the partial data and the other partial data to generate the target data;
the judging module is used for judging whether the data center is the data center at the bottommost layer or not according to the second information;
the splitting module is used for splitting the target data according to the second information under the condition that the judgment result of the judging module is negative;
the sending module is used for sending the split partial data to a data center which is lower than the data center of the sending module according to a preset sending rule so that the data center at the bottommost layer can obtain the target data;
the splitting module is specifically configured to:
under the condition that the judgment result of the judgment module is negative, determining the number of data centers which are lower than the data centers of the judgment module by one layer according to the second information;
according to the number, splitting the target data into a plurality of partial data with the same data size;
the first information is the number of data centers which are positioned in the same layer as the self data center and identification information of the data centers which are positioned in the same layer as the self data center; the second information is the number of data centers one floor lower than the self data center and the identification information of the data centers one floor lower than the self data center;
the preset sending rule is that the data center of the upper layer sends the split part of data to only one data center of the lower layer.
6. The apparatus of claim 5, wherein the physical link attributes between the data centers at the same layer and the data center at the highest layer are the same.
7. The apparatus of claim 6, wherein the physical link attributes are the same as:
the physical link lengths are within the same length interval.
8. The apparatus of claim 5, wherein the distances from the data centers located in the same floor to the data center of the highest floor are within the same range.
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| CN104202399A (en) * | 2014-09-05 | 2014-12-10 | 国家电网公司 | Request buffer pool based data service scheduling method |
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