CN114268635B - System and method for positioning P2P streaming media file and selecting node - Google Patents
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Abstract
The invention provides a system and a method for positioning and selecting nodes of P2P streaming media files, comprising a program source server, a content management system, an SP server cluster, a TS server, a Redis server and a client, wherein the content management system is used for completing the issuing of a unified program and generating unique identifiers of the streaming media files; the SP server cluster is used for receiving the issued information and synchronizing all the information to the TS server; the Redis server reads and stores nodes of the same file in the TS server, and completes a three-level searching scheme of file positioning; the SP server cluster completes a node selection scheme of the data cache; the unified release of the streaming media files, the rapid positioning of the streaming media files and the selection of high-quality nodes are realized, and the sharing rate is improved.
Description
[ field of technology ]
The invention relates to the field of network transmission, in particular to a system and a method for positioning P2P streaming media files and selecting nodes.
[ background Art ]
In recent years, with the gradual expansion of network bandwidth, the rapid development of the multimedia industry, the gradual increase of service scenes such as short video, live broadcast and the like, and the continuous increase of network data volume of video data. It is particularly important for the providers and operators of these video data to reduce the huge network bandwidth costs associated with the video data, and most video websites employ P2P distributed network transmission technology to reduce the bandwidth costs and increase the server concurrency. The P2P distributed network transmission structure changes the traditional streaming media transmission playing mode, namely the Client/Server centralized network mode, fully utilizes idle storage resources among clients, balances the load of streaming media network media servers, and increases the number of supported clients, the instantaneity and the load balance of the whole streaming media live broadcast or on-demand transmission network.
Meanwhile, because the streaming media service has strong real-time performance, in the P2P streaming media system, newly added clients find nodes capable of providing the needed media content in the coverage network by using P2P files, establish connection and accept or provide the media content. In the P2P network structure, a common file locating manner is implemented by a distributed hash table, each file obtains a unique identifier after hash operation, each node also corresponds to an identifier, and the file is stored in the node close to the identifier. When a file needs to be searched, firstly, hash operation is carried out on the file name to obtain an identifier of the file, and nodes for storing the file are found through different routing algorithms. The nodes select different strategies according to requirements, if the service delay is small, adjacent nodes can be selected to establish a relationship, for example, the same local area network node is selected; if the service with high quality is needed, the nodes with high bandwidth and strong CPU capability and the same network operators can be provided; for higher stability of service, a relatively stable node should be selected, such as a node that is online for a long period of time, and does not frequently switch programs or exit the system.
Although the node method for searching the same file in the existing P2P streaming media system is fast and effective, the following inherent technical problems exist:
(1) Because the files are distributed on each node, the popularity of the media files cannot be reflected, and the load is unbalanced;
(2) The file storage strategy is not fixed, and the relation between nodes and files cannot be unified;
(3) The file searching can not provide keyword searching, complex inquiry can not be completed, and proper nodes can be found;
(4) The live streaming media service cannot be expanded, and the method is only suitable for an on-demand system;
(5) Nodes in a live system, although establishing a connection, may not share data.
For the above reasons, improvements to the file searching mode in the existing P2P streaming media system are urgently needed to adapt to the query, live broadcast and data sharing of the file.
[ invention ]
The invention provides a system and a method for positioning and selecting P2P streaming media files, which can rapidly position streaming media files and provide high-quality nodes to provide streaming media data, thereby improving the node sharing rate of a system and reducing the network bandwidth of a server.
In order to achieve the above-mentioned eyesight, the technical scheme adopted is as follows:
a P2P streaming media file positioning and node selecting system comprises a program source server, a content management system, an SP server cluster, a TS server, a Redis server and a client side, wherein,
the content management system is used for completing the issuing of the unified program and generating a unique identifier of the streaming media file;
the program source server is used for sending the characteristic information of the original streaming media resources stored by the program source server to the SP server cluster;
the SP server cluster is used for sending a request to the program source server, receiving the issued program content, receiving information issued by the content management system and synchronizing all the information to the TS server;
the Redis server is used for reading and storing nodes of the same file in the TS server and establishing different sets through the country, the city and the operator according to the same program;
the TS server is used for receiving the unique identification of the program carried by the streaming media file node, rapidly and uniquely positioning the streaming media file, and rapidly obtaining the node of the same streaming media file by solving intersection de-duplication of four sets of the program; and the system is used for managing the state information of each client which logs in the system at present, and displaying the characteristic information of the streaming media resource which can be provided by the system at present to the client according to the request service of the client;
the SP server cluster also stores nodes of the same file through a Redis server, and is used for dividing the data of the same program cache into areas and storing nodes of different areas respectively; and the SP server cluster is used for receiving the streaming media node query request service of the client, comparing the data block position of the client carrying the cache data with the streaming media data cache interval, finding out nodes which play the streaming media data and returning the nodes, and establishing connection and sharing the data to the client.
Preferably, the system also comprises a TS-WEB background server and a TS-WEB front end,
the TS-WEB background is used for reading the frequency of sharing data of the same file node stored by the Redis server, counting the activity of the program according to the unique identification of the program carried by the streaming media file node determined by the TS server, and uploading the given load balancing scheme to the content management system after the program hot counting is completed;
the TS-WEB front end is used for requesting data from a TS-WEB background and showing the issued program hot statistics.
Preferably, the system further comprises a log server background and a log server front end,
the log server background is used for receiving logs uploaded by the SP server cluster, the TS server and the client respectively;
the front end of the log server is used for inquiring log data of the background of the log server by the web page and showing the inquiring result.
Preferably, the program source server is further used for completing on-demand program source and providing live program source.
A method for P2P streaming media file location and node selection, comprising the steps of:
step S1, the content management system completes the issuing of a unified program and generates a unique identifier of a streaming media file;
step S2, the program source server finishes the program source on demand and provides a live program source, and simultaneously sends the characteristic information of the original streaming media resource stored by the program source server to the SP server cluster;
step S3, the SP server cluster sends a request to a program source server, receives the issued program content and receives information issued by a content management system, and simultaneously synchronizes all the information to a TS server;
step S4, the Redis server reads and stores nodes of the same file in the TS server, and a three-level searching scheme for file positioning is completed;
step S5, the SP server cluster stores nodes of the same file through the Redis server to complete a node selection scheme of data caching;
and S6, the TS-WEB background reads the frequency of sharing data of the same file node stored by the Redis server, counts the activity of the program according to the unique identification of the program carried by the streaming media file node determined by the TS server, and uploads the given load balancing scheme to the content management system after the program hot statistics is completed.
Further, the step S4 further includes:
the Redis server reads and stores nodes of the same file in the TS server, and establishes different sets through the country, the city and the operator according to the same program;
and the TS server rapidly and uniquely positions the streaming media file, and rapidly obtains the nodes of the same streaming media file by solving intersection de-duplication of four sets of the program.
Further, the step S5 further includes:
through a three-level searching strategy, nodes with the same streaming media file are found and connection is established, and the data caching node selection is to find high-quality sharable nodes, namely, nodes capable of sharing data;
then, nodes storing the same file through the Redis server, and dividing the data cached by the same program into areas and nodes respectively storing different areas by the SP server cluster;
then, when the client requests the streaming media node to inquire the service, the client carries the data block position of the cache data, the SP server cluster compares the cache intervals of the streaming media data, finds out the nodes which play the streaming media data close to each other, returns the nodes, and establishes connection and shares the data to the client.
Further, the step S6 further includes: the TS-WEB front end requests data from the TS-WEB background and displays the issued program hot statistics.
Further, the step S6 further includes:
the log server background receives logs uploaded by the SP server cluster, the TS server and the client respectively, and the front-end webpage of the log server inquires log data of the log server background and displays inquiry results.
The invention has the advantages that:
in the invention, the content management system finishes the issuing of the unified program and generates the unique identification of the streaming media file; and the Redis server reads and stores nodes of the same file in the TS server to complete a three-level searching scheme of file positioning; meanwhile, the SP server cluster stores nodes of the same file through the Redis server, and a node selection scheme of data caching is completed. The invention has the following effects:
1. the method has the advantages that the quick streaming media file positioning, streaming media file and live broadcast stream storage and service end are realized, the on-demand and live broadcast service is dynamically expanded, the requirement on node storage is reduced, and the node file storage scheme is optimized;
2. the streaming media files are uniformly issued by the content management system CMS, the file management is uniform, the file hash is unique, the node can rapidly locate the streaming media data required by the user through the unique hash value, and complex fuzzy matching is avoided;
3. program activity statistics and load balancing are realized, and a background server counts popular programs, so that a program release strategy of a content management system CMS is dynamically adjusted, the load balancing is realized, and the stability of the server is improved;
4. selecting high-quality nodes, filtering node transmission of similar countries, cities and operators by adding a three-level searching scheme, and increasing node NAT capability;
5. and the sharing rate is improved, the node caches the streaming media data, the data sharing capability of the system is improved, and the service network bandwidth is reduced.
[ description of the drawings ]
FIG. 1 is a system architecture diagram of the present invention.
[ detailed description ] of the invention
The present invention will be further described by way of specific examples.
First aspect: a system for positioning and selecting P2P streaming media files, as shown in figure 1, comprises a program source server 1, a content management system CMS2, an SP server cluster 3, a TS server 4, a Redis server 5, a client 6, a TS-WEB background server 7, a TS-WEB front end 8, a log server background 9 and a log server front end 10, wherein,
the content management system CMS2 is configured to complete the distribution of a unified program and generate a unique identifier of a streaming media file.
The program source server 1 is configured to send the feature information of the original streaming media resource stored in the program source server, for example, the CDN/relay/third party platform, to the SP server cluster 3; meanwhile, the method is used for completing on-demand program sources and providing live program sources.
The SP server cluster 3 is configured to send a request to the program source server 1, receive the downloaded program content, and receive information delivered by the content management system, and synchronize all the information to the TS server 4.
The Redis server 5 is used for reading and storing the nodes of the same file in the TS server 4, and establishing different sets according to the same program through the country, the city and the operator respectively.
The TS server 4 is used for receiving the unique identification of the program carried by the streaming media file node, rapidly and uniquely positioning the streaming media file, and rapidly obtaining the node of the same streaming media file by solving intersection de-duplication of four sets of the program; and is used for managing the state information of each client 6 currently logged in, and displaying the characteristic information of the streaming media resource which can be provided by the system currently to the client 6 according to the request service of the client 6.
The SP server cluster 3 also stores nodes of the same file through the Redis server 5, and is used for dividing data of the same program cache into areas and storing nodes of different areas respectively; and the SP server cluster 3 is simultaneously configured to receive a streaming media node query request service of the client 6, compare with a streaming media data buffer interval according to a data block position of the cache data carried by the client 6, find a node close to the streaming media data to play the streaming media data, and return the node, and establish connection and share the data to the client 6.
The TS-WEB background is used for reading the frequency of sharing data of the same file node stored by the Redis server 5, counting the activity of the program according to the unique identification of the program carried by the streaming media file node determined by the TS server 4, and uploading the given load balancing scheme to the content management system CMS2 after the program hot counting is completed.
The TS-WEB front end 8 is used for requesting data from a TS-WEB background and showing the issued program hot statistics.
The log server background 9 is used for receiving logs uploaded by the SP server cluster 3, the TS server 4 and the client 6 respectively; the front end 10 of the log server is used for inquiring log data of the background 9 of the log server by the web page and displaying the inquiring result.
In a second aspect, a method for positioning and selecting a P2P streaming media file, as shown in fig. 1, includes the following steps:
step S1, a content management system CMS2 completes the issuing of a unified program and generates a unique identifier of a streaming media file;
step S2, the program source server 1 finishes the on-demand program source and provides the live program source, and simultaneously sends the characteristic information of the original streaming media resources stored by itself, such as CDN/relay/third party platform, to the SP server cluster 3;
step S3, the SP server cluster 3 sends a request to the program source server 1, receives the issued program content and receives the information issued by the content management system, and simultaneously synchronizes all the information to the TS server 4;
step S4, the Redis server 5 reads and stores nodes of the same file in the TS server 4, and a three-level searching scheme for file positioning is completed; the method comprises the following steps:
the Redis server 5 reads and stores nodes of the same file in the TS server 4, and establishes different sets through the country, the city and the operator respectively according to the same program;
for example, a china, beijing, mobile operator node requested the program tv4063@720, and the storage structure is as follows:
the unique identification of the program carried by the streaming media file node is sent to the TS server 4, the TS server 4 rapidly and uniquely locates the streaming media file, and the nodes of the same streaming media file are rapidly obtained by solving intersection and duplication of four sets of the program.
Step S5, the SP server cluster 3 stores nodes of the same file through the Redis server 5 to complete a node selection scheme of data caching; the method comprises the following steps:
through a three-level searching strategy, nodes with the same streaming media file are found and connection is established, and the data caching node selection is to find high-quality sharable nodes, namely, nodes capable of sharing data;
then, the SP server cluster 3 divides the data of the same program cache into areas and stores the nodes of different areas respectively through the nodes of the Redis server 5 storing the same file; for example, if a program server caches 30M of streaming media data, the 30M of streaming media data is divided into 6 areas, the 0-5M position is the first area, the 5-10M position is the second area, the 10-15M position is the third area, the 15-20 position is the fourth area, the 20-25M position is the fifth area, and the 25-30M position is the sixth area;
| section division | Description of the invention |
| 2116385d3eebaf88311533420987408b：1 | All nodes stored in interval 0-5M |
| 2116385d3eebaf88311533420987408b：2 | All nodes of 5-10M interval two storage |
| 2116385d3eebaf88311533420987408b：3 | All nodes stored in 10-15M interval three |
| 2116385d3eebaf88311533420987408b：4 | All nodes of 15-20M interval four storage |
| 2116385d3eebaf88311533420987408b：5 | All nodes of five storages in 20-25M interval |
| 2116385d3eebaf88311533420987408b：6 | All nodes stored in 25-30M interval six |
Then, when the client 6 requests the streaming media node to inquire about the service, the client 6 carries the data block position of the cached data, the SP server cluster 3 compares the cache intervals of the streaming media data, finds out the nodes which play the streaming media data close to each other, returns the nodes, and establishes connection and shares the data to the client 6.
Step S6, the TS-WEB background reads the frequency of sharing data of the same file node stored by the Redis server 5, counts the activity of the program according to the unique identification of the program carried by the streaming media file node determined by the TS server 4, and uploads the given load balancing scheme to the content management system CMS2 after the program hot statistics is completed; meanwhile, the TS-WEB front end 8 requests data from a TS-WEB background and displays the issued program hot statistics.
And the log server background 9 receives logs uploaded by the SP server cluster 3, the TS server 4 and the client 6 respectively, and the log server front end 10 queries log data of the log server background 9 in a webpage manner and displays query results.
The content management system completes the issuing of a unified program and generates a unique identifier of the streaming media file; and the Redis server 5 reads and stores nodes of the same file in the TS server 4 to complete a three-level searching scheme of file positioning; meanwhile, the SP server cluster 3 stores nodes of the same file through the Redis server 5 to complete a node selection scheme of data caching; therefore, program activity statistics and load balancing can be realized, and a background server counts popular programs, so that the program release strategy of the content management system CMS2 is dynamically adjusted, the load balancing is realized, and the stability of the server is improved; the selection of high-quality nodes is facilitated, the node sending down of the similar nodes of the country, the city and the operator is filtered through adding a three-level searching scheme, and the NAT capability of the nodes is improved; and the sharing rate is improved, the node caches the positioning of the streaming media data, the data sharing capability of the system is improved, and the service network bandwidth is reduced.
The above-described embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention except as exemplified in the specific embodiments; all equivalent changes according to the method and principle of the present invention should be covered by the protection scope of the present invention.
Claims (7)
1. A system for positioning and selecting P2P stream media files is characterized by comprising a program source server, a content management system, an SP server cluster, a TS server, a Redis server and a client, wherein,
the content management system is used for completing the issuing of the unified program and generating a unique identifier of the streaming media file;
the program source server is used for sending the characteristic information of the original streaming media resources stored by the program source server to the SP server cluster;
the SP server cluster is used for sending a request to the program source server, receiving the issued program content, receiving information issued by the content management system and synchronizing all the information to the TS server;
the Redis server is used for reading and storing nodes of the same file in the TS server and establishing different sets through the country, the city and the operator according to the same program;
the TS server is used for receiving the unique identification of the program carried by the streaming media file node, rapidly and uniquely positioning the streaming media file, and rapidly obtaining the node of the same streaming media file by solving intersection de-duplication of four sets of the program; and the system is used for managing the state information of each client which logs in the system at present, and displaying the characteristic information of the streaming media resource which can be provided by the system at present to the client according to the request service of the client;
the SP server cluster also stores nodes of the same file through a Redis server, and is used for dividing the data of the same program cache into areas and storing nodes of different areas respectively; and the SP server cluster is used for receiving the streaming media node query request service of the client, comparing the data block position of the client carrying the cache data with the streaming media data cache interval, finding out nodes which play the streaming media data and returning the nodes, and establishing connection and sharing the data to the client.
2. The system for P2P streaming media file location and node selection according to claim 1, further comprising a TS-WEB background server and a TS-WEB front-end,
the TS-WEB background is used for reading the frequency of sharing data of the same file node stored by the Redis server, counting the activity of the program according to the unique identification of the program carried by the streaming media file node determined by the TS server, and uploading the given load balancing scheme to the content management system after the program hot counting is completed;
the TS-WEB front end is used for requesting data from a TS-WEB background and showing the issued program hot statistics.
3. The system for P2P streaming media file location and node selection according to claim 1, further comprising a log server background and a log server front end,
the log server background is used for receiving logs uploaded by the SP server cluster, the TS server and the client respectively;
the front end of the log server is used for inquiring log data of the background of the log server by the web page and showing the inquiring result.
4. The system for P2P streaming media file location and node selection according to claim 1, wherein said source server is further configured to complete on-demand of a source and provide a live source.
5. A method for positioning and selecting a P2P streaming media file, comprising the steps of:
step S1, the content management system completes the issuing of a unified program and generates a unique identifier of a streaming media file;
step S2, the program source server finishes the program source on demand and provides a live program source, and simultaneously sends the characteristic information of the original streaming media resource stored by the program source server to the SP server cluster;
step S3, the SP server cluster sends a request to a program source server, receives the issued program content and receives information issued by a content management system, and simultaneously synchronizes all the information to a TS server;
step S4, the Redis server reads and stores nodes of the same file in the TS server, and a three-level searching scheme for file positioning is completed;
the step S4 further includes:
the Redis server reads and stores nodes of the same file in the TS server, and establishes different sets through the country, the city and the operator according to the same program;
the method comprises the steps that a program unique identifier carried by a streaming media file node is sent to a TS server, the TS server rapidly and uniquely positions the streaming media file, and nodes of the same streaming media file are rapidly obtained by solving intersection de-duplication of four sets of the program;
step S5, the SP server cluster stores nodes of the same file through the Redis server to complete a node selection scheme of data caching;
the step S5 further includes:
through a three-level searching strategy, nodes with the same streaming media file are found and connection is established, and the data caching node selection is to find high-quality sharable nodes, namely, nodes capable of sharing data;
then, nodes storing the same file through the Redis server, and dividing the data cached by the same program into areas and nodes respectively storing different areas by the SP server cluster;
then, when the client requests the streaming media node to inquire the service, the client carries the data block position of the cache data, the SP server cluster compares the cache intervals of the streaming media data, finds out the nodes which play the streaming media data close to each other, returns the nodes, and establishes connection and shares the data to the client;
and S6, the TS-WEB background reads the frequency of sharing data of the same file node stored by the Redis server, counts the activity of the program according to the unique identification of the program carried by the streaming media file node determined by the TS server, and uploads the given load balancing scheme to the content management system after the program hot statistics is completed.
6. The method for positioning and selecting a P2P streaming media file according to claim 5, wherein the step S6 further comprises: the TS-WEB front end requests data from the TS-WEB background and displays the issued program hot statistics.
7. The method for positioning and selecting a node for a P2P streaming media file according to claim 6, wherein the step S6 further comprises:
the log server background receives logs uploaded by the SP server cluster, the TS server and the client respectively, and the front-end webpage of the log server inquires log data of the log server background and displays inquiry results.
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