CN103200272B - Streaming media storage system and storage method - Google Patents

Abstract

The present invention relates to a streaming media storage system, comprising a terminal device, a central server, a cache server and at least two storage servers, for at least two sub-stream media files after streaming media files are divided, the cache server and each storage server are respectively used for storage , and establish the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files in the central server; wherein, the terminal device sends the cache server to the cache server according to the storage information of the specified streaming media file obtained by the central server Send a streaming media request with each storage server, and get the feedback of the specified streaming media file; meanwhile, the present invention also relates to a storage method based on the streaming media storage system, through this system and method, not only can solve the concurrency that occurs when multiple terminals access problems, and can effectively improve the network access speed of streaming media files.

Description

A streaming media storage system and storage method

technical field

The invention relates to a streaming media storage system and storage method.

Background technique

Streaming media refers to the form of transmitting audio, video and multimedia files in the network in a streaming manner; the streaming media file format is a media format that supports streaming transmission and playback. The streaming transmission method is to divide multimedia files such as video and audio into compressed packages through a special compression method, and transmit them continuously and in real time from the server to the user's computer. In a streaming system, users don't have to wait until the entire file is downloaded to see the content as in non-streaming playback, but only need a few seconds or tens of seconds of start-up delay. Use the corresponding player on the user's computer to play the compressed video or audio and other streaming media files, and the remaining parts will continue to be downloaded until the playback is completed.

A series of related packages in this process is called "stream". Streaming media actually refers to a new media transmission method, not a new media. After the full application of streaming media technology, people can directly voice input when chatting online; if they want to see each other's appearance and expression, as long as both parties have a camera; Videos of products and products will pop up; more realistic video news will also appear.

Corresponding to the form in which streaming media files are divided into multiple files for storage, in the application of streaming media in the prior art, technicians will store the divided multiple files on multiple servers, because a single storage node, It not only restricts the number of concurrent users, but also affects the security and reliability of the system. At the same time, it is expensive, and there are also major defects in maintenance and data recovery speed. Therefore, streaming media files are divided into multiple files and stored in multiple servers. , can effectively solve the above problems. However, with the wide application of streaming media and the continuous progress of the Internet era, more and more terminal devices are connected to the network, and the transmission speed of the network has become an important consideration for people to use the network. The emergence and application of streaming media, It effectively solves the concurrency problem of multi-terminal devices, but for its network transmission, it still depends on the transmission speed of the network where it is located, and there is no effective way to improve it.

Contents of the invention

The technical problem to be solved by the present invention is to provide a streaming media storage system that can not only solve the concurrency problem when multiple terminals access, but also effectively improve the network access speed of streaming media files.

Correspondingly, the technical problem to be solved by the present invention is to provide a streaming media storage system based on the design of the present invention, which not only solves the concurrency problem during multi-terminal access, but also can effectively improve the access speed of streaming media files.

The present invention adopts the following technical solutions in order to solve the above technical problems: the present invention designs a streaming media storage system, including terminal equipment, a central server, and at least two storage servers; each streaming media file to be stored is divided through the central server respectively At least two sub-streaming media files are stored in each storage server respectively; the terminal device sends a streaming media request instruction to the central server, and the central server is based on the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files and the terminal device's The streaming media request command calls the storage information of the specified streaming media file corresponding to its sub-streaming media file, and feeds it back to the terminal device, and the terminal device sends the streaming media request command to each storage server specified in the storage information according to the obtained storage information, and then Each sub-stream media file of the specified stream media file is sent to the terminal device by each designated storage server; it also includes a cache server for storing each sub-stream media file together with each storage server, and the terminal device is based on the data obtained by the central server. To store the information, send a streaming media request instruction to the cache server and each storage server specified in the storage information, and then the specified cache server and each storage server will send the sub-stream media file of the specified streaming media file to the terminal device.

As a preferred technical solution of the present invention: the cache server and each storage server include respective counting modules corresponding thereto, respectively counting the number of calls of its internal sub-stream media files, and counting The results are sent to the central server.

Compared with the prior art, a streaming media storage system according to the present invention adopts the above technical solution, and has the following technical effects:

(1) The streaming media storage system designed by the present invention adopts multiple storage servers to divide the streaming media files into multiple files for separate storage, and adding a cache server can effectively improve the reading speed of the streaming media files by the terminal device;

(2) In the streaming media storage system designed by the present invention, for the cache server and each storage server, corresponding counting modules are respectively set up, which can conveniently count the number of visits of each streaming media file, and can be targeted in the future Update the stored streaming media files.

Correspondingly, the present invention adopts the following technical solutions in order to solve the above-mentioned technical problems: the present invention also designs a storage method of a streaming media storage system, comprising the following steps:

Step 1. The central server divides each streaming media file required to be stored into at least two sub-streaming media files, randomly stores them in each storage server respectively, and establishes the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files , stored in the central server;

Step 2. The central server calls the storage information corresponding to its sub-stream media files corresponding to the specified stream media files according to the mapping relationship of each streaming media file to its sub-stream media storage information and the streaming media request instruction of the terminal device, and feeds back to the terminal device , the terminal device then sends a streaming media request command to each storage server specified in the storage information according to the obtained storage information, and then the specified storage servers send each sub-stream media file of the specified streaming media file to the terminal device;

In the step 1, the central server randomly stores each sub-stream media file after each streaming media file is divided into the cache server and each storage server respectively;

In said step 2, the terminal device sends a streaming media request instruction to the cache server and each storage server specified in the storage information according to the storage information obtained by the central server, and then the specified cache server and each storage server will specify the streaming media file The sub-streaming media files of the device are sent to the terminal device.

As a preferred technical solution of the present invention: said step 1 comprises the following steps:

Step a. The central server divides each streaming media file required to be stored into at least two sub-streaming media files;

Step b. the central server stores each first section of sub-stream media files respectively corresponding to the required stored stream media files in the cache server, and all the other sub-stream media files are randomly stored in each storage server respectively;

Step c. The central server establishes a mapping relationship between each streaming media file corresponding to the storage information of its sub-streaming media files according to the storage of each sub-streaming media file, and stores it in the central server.

As a preferred technical solution of the present invention: after the step 1, the following step I is also included, and the step I and step 2 are carried out simultaneously, and the step I is as follows:

The counting module in the cache server and each storage server counts the number of calls of its internal sub-streaming media files respectively, and sends the counting results to the central server at specified time intervals, and the central server according to each sub-streaming media file The statistical results of the number of calls, as well as the pre-set thresholds of popular streaming media calls and unpopular streaming media calls are used to determine popular streaming media files and unpopular streaming media files.

As a preferred technical solution of the present invention: in the step 1, the following steps are also included for the popular streaming media files:

The central server randomly selects at least one section of sub-stream media files stored in each sub-stream media file on each storage server for the popular stream media files, copies it to the cache server, and updates the corresponding sub-stream media files of each stream media file. The mapping relationship of file storage information is stored in the central server; at the same time, the popular streaming media files are backed up to the cache server as a whole.

As a preferred technical solution of the present invention: in the step I, the following steps are also included for the unpopular streaming media file:

The central server analyzes and judges the sub-streaming media files stored on the cache server for unpopular streaming media files: if it is judged that there are other sub-streaming media files except the first sub-streaming media file, then randomly select at least one section of other sub-streaming media files. Streaming media files are deleted from the cache server, and the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files is stored in the central server;

If it is judged that there are no other sub-stream media files except the first sub-stream media file, then the first sub-stream media file is cut into a randomly selected storage server, and each stream media file is updated to correspond to its The mapping relationship of sub-stream media file storage information is stored in the central server.

As a kind of preferred technical scheme of the present invention: also comprise step i, step i is carried out before step 1 or carries out simultaneously with step 1, step 2, and step i is as follows:

Each of the storage servers detects its concurrent access and storage capacity within a specified time interval, and uploads the detection results to the central server, and the central server divides each storage server into An effective storage server or an ineffective storage server stores the streaming media files to be stored according to the division result.

As a preferred technical solution of the present invention: if a certain server in the storage servers does not upload the detection results of its concurrent access situation and storage capacity situation to the central server within the specified time interval, the central server will divide it into The faulty storage server triggers a fault-tolerant scheduling strategy for the faulty storage server, and at the same time, updates the mapping relationship of each streaming media file corresponding to its sub-streaming media file storage information, and stores it in the central server.

As a preferred technical solution of the present invention: the fault-tolerant scheduling strategy includes the following steps:

The central server searches whether there is a backup streaming file corresponding to the sub-streaming media file in the faulty server in the cache server, if it exists, the backup streaming file is copied to an effective storage server selected at random, and Update the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files, and store it in the central server.

Compared with the prior art, the storage method of a streaming media storage system according to the present invention has the following technical effects by adopting the above technical scheme:

(1) The storage method of the streaming media storage system designed by the present invention divides each streaming media file into each sub-streaming media file, and randomly stores them in the cache server and each storage server respectively. By adding a cache server, the stream can be effectively improved. The access speed of media files improves the network transmission efficiency of streaming media files;

(2) The storage method of the streaming media storage system designed by the present invention stores the first section of sub-streaming media files corresponding to each streaming media file in the cache server in each sub-streaming media file after each streaming media file is divided , can increase the access speed of the first sub-streaming media file in a targeted manner, and then improve the access speed of the terminal device for the entire access process of the streaming media file;

(3) In the storage method of the streaming media storage system designed by the present invention, for the stored streaming media files, by counting the number of times they are accessed, they are divided into popular streaming media files and unpopular streaming media files, and then respectively Corresponding storage updates for streaming media files and unpopular streaming media files can not only provide content index for terminal access, but also make reasonable planning for the storage of streaming media files and improve the overall access efficiency of stored streaming media files;

(4) The storage method of the streaming media storage system designed by the present invention, in the storage process of streaming media files, detects the concurrent access and storage capacity of each storage server within a specified time interval, and divides each storage server into Effective storage server or non-effective storage server can effectively improve the storage efficiency of streaming media files and the access speed of terminal devices to streaming media files;

(5) In the storage method of the streaming media storage system designed by the present invention, the central server adopts a fault-tolerant scheduling strategy for the faulty storage server, which can ensure the terminal device's access to streaming media files to the greatest extent.

Description of drawings

Fig. 1 is a schematic structural diagram of a streaming media storage system designed in the present invention.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the present invention has designed a kind of streaming media storage system, comprises terminal equipment, central server, and at least two storage servers; The files are respectively stored in each storage server; the terminal device sends a streaming media request command to the central server, and the central server calls The storage information of the specified streaming media file corresponding to its sub-streaming media file is fed back to the terminal device, and the terminal device sends a streaming media request command to each storage server specified in the storage information according to the obtained storage information, and then the specified storage servers Each sub-stream media file of the specified stream media file is sent to the terminal device; it also includes a cache server for storing each sub-stream media file together with each storage server, and the terminal device sends the storage information to the storage information according to the storage information obtained by the central server The specified cache server and each storage server send a streaming media request instruction, and then the specified cache server and each storage server send the sub-streaming media file of the specified streaming media file to the terminal device.

The streaming media storage system designed by the present invention adopts multiple storage servers to divide the streaming media files into multiple files for separate storage, and adding a cache server can effectively improve the reading speed of the streaming media files by the terminal equipment.

As a preferred technical solution of the present invention: the cache server and each storage server include respective counting modules corresponding thereto, respectively counting the number of calls of its internal sub-stream media files, and counting The results are sent to the central server.

In the streaming media storage system designed by the present invention, for the cache server and each storage server, corresponding counting modules are respectively set up, which can conveniently count the number of visits of each streaming media file, and can be targeted for storage in the future. Streaming files are updated.

In the actual application process of the streaming media storage system designed by the present invention, the streaming media file to be stored is divided into at least two sub-streaming media files through the central server, and stored in the cache server and each storage server respectively, and the terminal equipment sends the central server Send out a request command to read and write streaming media, the central server receives the streaming media request command sent by the terminal device, and calls the specified streaming media file corresponding to its sub-streaming media file according to the mapping relationship between each streaming media file and its sub-streaming media file storage information The storage information is fed back to the terminal device, and the terminal device then sends a streaming media request command to the cache server and each storage server specified in the storage information according to the obtained storage information, and then the specified cache server and each storage server will specify the streaming media The sub-streaming media file of the file is sent to the terminal device, and then the terminal device can read the streaming media file, which effectively improves the access speed of the terminal device to the streaming media while solving the problem of multi-terminal concurrency.

Among them, in the process of dividing and storing streaming media files, multiple sub-streaming media files belonging to the same streaming media file adopt the idea of random function to determine their storage information, and store the sub-streaming media files in the cache evenly as much as possible In the server and each storage server; in the process of segmenting and storing the streaming media files, the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files is established and stored in the central server. In this way, the central server maintains the mapping relationship between the stored streaming media files and their sub-streaming media file storage information, and enables the terminal device to directly communicate with the cache server and each storage server according to the obtained storage information to read the specified streaming media file .

Correspondingly, the present invention adopts the following technical solutions in order to solve the above-mentioned technical problems: the present invention also designs a storage method of a streaming media storage system, comprising the following steps:

Step 1. The central server divides each streaming media file required to be stored into at least two sub-streaming media files, randomly stores them in each storage server respectively, and establishes the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files , stored in the central server;

Step 2. The central server calls the storage information corresponding to its sub-stream media files corresponding to the specified stream media files according to the mapping relationship of each streaming media file to its sub-stream media storage information and the streaming media request instruction of the terminal device, and feeds back to the terminal device , the terminal device then sends a streaming media request command to each storage server specified in the storage information according to the obtained storage information, and then the specified storage servers send each sub-stream media file of the specified streaming media file to the terminal device;

In the step 1, the central server randomly stores each sub-stream media file after each streaming media file is divided into the cache server and each storage server respectively;

In said step 2, the terminal device sends a streaming media request instruction to the cache server and each storage server specified in the storage information according to the storage information obtained by the central server, and then the specified cache server and each storage server will specify the streaming media file The sub-streaming media files of the device are sent to the terminal device.

In the storage method of the streaming media storage system designed by the present invention, each sub-streaming media file after each streaming media file is divided is randomly stored in the cache server and each storage server respectively, and the storage capacity of the streaming media file can be effectively improved by adding a cache server. Access speed, improve network transmission efficiency of streaming media files.

As a preferred technical solution of the present invention: said step 1 comprises the following steps:

Step a. The central server divides each streaming media file required to be stored into at least two sub-streaming media files;

Step b. the central server stores each first section of sub-stream media files respectively corresponding to the required stored stream media files in the cache server, and all the other sub-stream media files are randomly stored in each storage server respectively;

Step c. The central server establishes a mapping relationship between each streaming media file corresponding to the storage information of its sub-streaming media files according to the storage of each sub-streaming media file, and stores it in the central server.

In the storage method of the streaming media storage system designed by the present invention, in each sub-streaming media file after each streaming media file is divided, the first paragraph of sub-streaming media files corresponding to each streaming media file is stored in the cache server, which can effectively Improve the access speed of the first sub-streaming media file in a targeted manner, and then improve the access speed of the terminal device for the entire access process of the streaming media file.

As a preferred technical solution of the present invention: after the step 1, the following step I is also included, and the step I and step 2 are carried out simultaneously, and the step I is as follows:

The counting module in the cache server and each storage server counts the number of calls of its internal sub-streaming media files respectively, and sends the counting results to the central server at specified time intervals, and the central server according to each sub-streaming media file The statistical results of the number of calls, as well as the pre-set thresholds of popular streaming media calls and unpopular streaming media calls are used to determine popular streaming media files and unpopular streaming media files.

As a preferred technical solution of the present invention: in the step 1, the following steps are also included for the popular streaming media files:

The central server randomly selects at least one section of sub-stream media files stored in each sub-stream media file on each storage server for the popular stream media files, copies it to the cache server, and updates the corresponding sub-stream media files of each stream media file. The mapping relationship of file storage information is stored in the central server; at the same time, the popular streaming media files are backed up to the cache server as a whole.

As a preferred technical solution of the present invention: in the step I, the following steps are also included for the unpopular streaming media file:

The central server analyzes and judges the sub-streaming media files stored on the cache server for unpopular streaming media files: if it is judged that there are other sub-streaming media files except the first sub-streaming media file, then randomly select at least one section of other sub-streaming media files. Streaming media files will be deleted from the cache server, and the mapping relationship of each streaming media file corresponding to its sub-streaming media storage information will be updated and stored in the central server;

If it is judged that there are no other sub-stream media files except the first sub-stream media file, then the first sub-stream media file is cut into a randomly selected storage server, and each stream media file is updated to correspond to its The mapping relationship of sub-stream media file storage information is stored in the central server.

In the storage method of the streaming media storage system designed by the present invention, for the streaming media files stored, by counting the number of times it is accessed, it is divided into popular streaming media files and unpopular streaming media files, and then the popular streaming media files are respectively Corresponding storage updates for unpopular streaming media files can not only provide content index for terminal access, but also make reasonable planning for the storage of streaming media files and improve the overall access efficiency of stored streaming media files.

As a kind of preferred technical scheme of the present invention: also comprise step i, step i is carried out before step 1 or carries out simultaneously with step 1, step 2, and step i is as follows:

Each of the storage servers detects its concurrent access and storage capacity within a specified time interval, and uploads the detection results to the central server, and the central server divides each storage server into The effective storage server or the non-effective storage server stores the streaming media files to be stored according to the division result, wherein the cleaning operation is performed on the non-effective storage server.

The storage method of the streaming media storage system designed by the present invention, in the storage process of streaming media files, detects the concurrent access and storage capacity of each storage server within a specified time interval, and divides each storage server into effective storage servers Or non-effective storage server, can effectively improve the storage efficiency of streaming media files, and the access speed of terminal equipment to streaming media files.

As a preferred technical solution of the present invention: if a certain server in the storage servers does not upload the detection results of its concurrent access situation and storage capacity situation to the central server within the specified time interval, the central server will divide it into The faulty storage server triggers a fault-tolerant scheduling strategy for the faulty storage server, and at the same time, updates the mapping relationship of each streaming media file corresponding to its sub-streaming media file storage information, and stores it in the central server.

In the storage method of the streaming media storage system designed by the present invention, the central server adopts a fault-tolerant scheduling strategy for the faulty storage server, which can ensure the access of the streaming media files by the terminal equipment to the greatest extent.

As a preferred technical solution of the present invention: the fault-tolerant scheduling strategy includes the following steps:

The central server searches whether there is a backup streaming file corresponding to the sub-streaming media file in the faulty server in the cache server, if it exists, the backup streaming file is copied to an effective storage server selected at random, and Update the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files, and store it in the central server.

In the actual application process of the storage method of the streaming media storage system designed by the present invention, when the streaming media file is divided into at least two sub-streaming media files for storage, they are stored in the cache server and each storage server respectively, wherein , the central server stores each first sub-stream media file respectively corresponding to each stream media file in the cache server, and the remaining sub-stream media files are randomly stored in each storage server respectively, and after that, the terminal device accesses the stream media file During the process, the central server divides each streaming media file into popular streaming media files and unpopular streaming media files according to the access times of each streaming media file, and optimizes and adjusts the storage locations of popular streaming media files and unpopular streaming media files , and update the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files, and store it in the central server. The specific optimization and adjustment process is as follows:

For the popular streaming media files, the following steps are also included:

The central server randomly selects at least one section of sub-stream media files stored in each sub-stream media file on each storage server for the popular stream media files, copies it to the cache server, and updates the corresponding sub-stream media files of each stream media file. The mapping relationship of file storage information is stored in the central server; at the same time, the popular streaming media files are backed up to the cache server as a whole.

The following steps are also included for the unpopular streaming media file:

The central server analyzes and judges the sub-streaming media files stored on the cache server for unpopular streaming media files: if it is judged that there are other sub-streaming media files except the first sub-streaming media file, then randomly select at least one section of other sub-streaming media files. Streaming media files, delete them from the cache server, and update the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files, and store them in the central server; the specific implementation is to use random strategy to select several unpopular streams The specific number of sub-stream media files of a media file should be dynamically formulated according to the number of sub-stream media files of this unpopular stream media file in the current cache server, such as the total number of sub-stream media files belonging to this unpopular stream media file in the cache server Half (rounded up), but the sub-streaming media file with the most read times is reserved, that is, if the selected sub-streaming media file is the sub-streaming media with the most read times among the unpopular streaming media files in the cache server file, then select again, and after completing the whole cutting step, the mapping relationship of each streaming media file corresponding to the storage information of its sub-streaming media files is updated by the central server, and stored in the central server.

If it is judged that there are no other sub-stream media files except the first sub-stream media file, then the first sub-stream media file is cut into a randomly selected storage server, and each stream media file is updated to correspond to its The mapping relationship of sub-stream media file storage information is stored in the central server.

Based on the optimization and adjustment of the storage locations of popular streaming media files and unpopular streaming media files above, the access efficiency of the terminal device to streaming media files can be effectively improved, and the access speed of popular streaming media files can be effectively optimized.

In the actual application process, each storage server detects its concurrent access and storage capacity within a specified time interval, and uploads the detection results to the central server, and the central server sends each The storage servers are divided into effective storage servers or non-effective storage servers, and then store the streaming media files to be stored according to the division results, so that when storing the streaming media files to be stored, the storage locations can be reasonably arranged to effectively improve the efficiency of streaming media. File storage and access efficiency. Among them, when a certain storage server is classified as an ineffective storage server, the storage server will be canceled to store the streaming media files, and at the same time stop responding to the data read by the terminal device that has not been performed on the ineffective storage server Operation, until the concurrent access of the storage server is greatly reduced, and at the same time it has a reasonable remaining storage capacity again, then the storage server will be reclassified as an effective storage server, and participate in the storage operation of the streaming media files to be stored. Different operation methods for unpopular streaming media files in the server, clean up the corresponding sub-streaming media files in the non-effective storage server. The central server orders the storage server to trigger internal cleaning scheduling, determines the cleaning list based on the number of calls of each sub-streaming media file, and then executes the cleaning operation, and stops responding to the streaming media request instruction that the terminal device has not yet performed on the storage server until the The non-effective storage server regains a reasonable remaining storage space, and the number of concurrent users accepted by the non-effective storage node is greatly reduced. The central server redefines it as a valid storage server, and updates each streaming media file to correspond to its sub-streaming media file storage The mapping relationship of information is stored in the central server; the cleaning operation includes deleting the sub-streaming media files with low calling times according to the cleaning list; or cutting the sub-streaming media files with low calling times to other effective storage randomly selected in the server.

The fault-tolerant scheduling strategy for faulty storage servers can ensure the successful access of streaming media files by terminal devices to the greatest extent. Furthermore, when the faulty storage server resumes sending the detection results of its concurrent access and storage capacity within a specified time interval, the central server cancels the division of its faulty storage server. Whether there is a backup streaming file corresponding to the sub-streaming media file in the faulty server in the cache server, if it exists, copy the backup streaming file to an effective storage server selected at random, and update the corresponding The mapping relationship of its sub-stream media file storage information is stored in the central server.

Among them, the storage capacity of each storage server includes the maximum storage capacity, current storage capacity, and remaining storage capacity. According to the concurrent access and storage capacity of each storage server, the central server divides each storage server into valid storage servers or ineffective storage servers. The storage server stores the streaming media files to be stored according to the division result.

In the actual application process, each storage server manages several IDERAID hard disks to form a RAIDI storage architecture to ensure that a single storage server can effectively respond to concurrent services of multiple users.

In the above storage method for the streaming media storage system, the central server dynamically saves and maintains the mapping relationship of each updated streaming media file corresponding to the storage information of its sub-streaming media files. Based on the above storage method for the streaming media storage system, the access of the terminal device to each streaming media file is still as follows:

According to the storage information obtained by the central server, the terminal device sends a streaming media request command to the cache server and each storage server specified in the storage information, and then the specified cache server and each storage server send the sub-stream media file of the specified streaming media file to the terminal device, and then realize the reading of the streaming media file by the terminal device.

In the storage method of the streaming media storage system designed by the present invention, each sub-streaming media file in the cache server and each storage server is cleaned up and adjusted on a regular basis, and each streaming media file is updated to correspond to its sub-streaming media file storage information The mapping relationship is stored in the central server, which can effectively improve the storage and application efficiency of the streaming media storage system.

In summary, the present invention provides a streaming media storage system and storage method, which introduces a cache server, and at the same time distributes and saves streaming media files in the cache server and each storage server in a balanced manner, and according to the concurrency of each storage server Access conditions and storage capacity conditions determine each storage server participating in the storage process. At the same time, based on the division of popular streaming media files and unpopular streaming media files, as well as the optimization and adjustment of storage locations for popular streaming media files and unpopular streaming media files, the access rate of popular streaming media files is improved; not only that, but also using popular streaming media files The backup files in the cache server protect access to popular streaming media files to the greatest extent through fault-tolerant scheduling strategies.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and can also be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art. Variations.

Claims (9)

1. a Storage System for Stream Media, comprises terminal equipment, central server and at least two storage servers, each required files in stream media stored is divided at least two sub-files in stream media through central server respectively, is stored in each storage server respectively, terminal equipment sends Streaming Media request instruction to central server, central server is according to the mapping relations of each files in stream media its subflow media file storage information corresponding, and the Streaming Media request instruction of terminal equipment, call the storage information of specifying files in stream media its subflow media file corresponding, feed back to terminal equipment, terminal equipment is again according to the storage information obtained, each storage server of specifying in storage information sends Streaming Media request instruction, terminal equipment is sent to by specifying each subflow media file of files in stream media again by each storage server of specifying, it is characterized in that: also comprise with each storage server in the lump for storing the caching server of each subflow media file respectively, terminal equipment is according to the storage information obtained by central server, the caching server of specifying in storage information and each storage server send Streaming Media request instruction, then are sent to terminal equipment by the caching server of specifying and each storage server by specifying the subflow media file of files in stream media, described caching server and each storage server comprise individual count module corresponding with it respectively, respectively the called number of times of its inside subflow media file is counted, and at the appointed time count results is sent to described central server by interval, central server to be called the statistics of number of times and popular Streaming Media call number threshold value, the unexpected winner Streaming Media call number threshold value of in advance setting according to each subflow media file, determines popular files in stream media and unexpected winner files in stream media.

2., based on a storage means for a kind of Storage System for Stream Media according to claim 1, comprise the steps:

The files in stream media stored needed for each is divided at least two sub-files in stream media by step 1. central server respectively, be stored at random respectively in each storage server, and set up the mapping relations of each files in stream media its subflow media file storage information corresponding, be stored in central server;

Step 2. central server is according to the corresponding mapping relations of its subflow media file storage information of each files in stream media and the Streaming Media request instruction of terminal equipment, call the storage information of specifying files in stream media its subflow media file corresponding, feed back to terminal equipment, terminal equipment is again according to the storage information obtained, each storage server of specifying in storage information sends Streaming Media request instruction, then is sent to terminal equipment by each storage server of specifying by specifying each subflow media file of files in stream media;

It is characterized in that:

In described step 1, central server each files in stream media is split respectively after each subflow media file, be stored in caching server and each storage server respectively at random;

In described step 2, terminal equipment is according to the storage information obtained by central server, the caching server of specifying in storage information and each storage server send Streaming Media request instruction, then are sent to terminal equipment by the caching server of specifying and each storage server by specifying the subflow media file of files in stream media.

3. the storage means of a kind of Storage System for Stream Media according to claim 2, is characterized in that: described step 1 comprises the steps:

The files in stream media stored needed for each is divided at least two sub-files in stream media by step a. central server respectively;

Step b. central server will correspond respectively to each first paragraph subflow media file storage of the files in stream media stored needed for each in caching server, and all the other each subflow media files are stored in each storage server respectively at random;

Step c central server, according to the storage for each subflow media file, is set up the mapping relations of each files in stream media its subflow media file storage information corresponding, is stored in central server.

4. the storage means of a kind of Storage System for Stream Media according to claim 3, is characterized in that: also comprise the steps I after described step 1, step I and step 2 are carried out simultaneously, and step I is as follows:

Described caching server and the counting module in each storage server, respectively the call number of its inside subflow media file is counted, and at the appointed time count results is sent to described central server by interval, central server to be called the statistics of number of times and popular Streaming Media call number threshold value, the unexpected winner Streaming Media call number threshold value of in advance setting according to each subflow media file, determines popular files in stream media and unexpected winner files in stream media.

5. the storage means of a kind of Storage System for Stream Media according to claim 4, is characterized in that: in described step I, also comprises the steps: for described popular files in stream media

Described central server is stored in each subflow media file on each storage server for popular files in stream media, at least one cross-talk files in stream media of random selecting, be copied in caching server, and upgrade the mapping relations of each files in stream media its subflow media file storage information corresponding, be stored in central server; Meanwhile, by popular files in stream media monolithic backup to caching server.

6. a kind of storage means of Storage System for Stream Media according to claim 4 or 5, is characterized in that: in described step I, also comprises the steps: for described unexpected winner files in stream media

Described central server carries out analyzing judgement for the subflow media file that unexpected winner files in stream media is stored on caching server: there is other subflow media file except first paragraph subflow media file if judge, then other subflow media file of random selecting at least one section, it is deleted from caching server, and upgrade the mapping relations of each files in stream media its subflow media file storage information corresponding, be stored in central server;

Other subflow media file do not existed except first paragraph subflow media file if judge, then this first paragraph subflow media file is trimmed in a storage server of Stochastic choice, and upgrade the mapping relations of each files in stream media its subflow media file storage information corresponding, be stored in central server.

7. a kind of storage means of Storage System for Stream Media according to Claims 2 or 3, it is characterized in that: also comprise step I, step I is carried out before step 1 or is carried out with step 1, step 2 simultaneously, and step I is as follows:

Each storage server described at the appointed time detects its concurrent access situations and memory capacity situation in interval respectively, and testing result is uploaded to described central server, central server is according to the testing result received, each storage server is divided into respectively effective storage server or non-effective storage server, then according to division result, files in stream media to be stored is stored.

8. the storage means of a kind of Storage System for Stream Media according to claim 7, it is characterized in that: if certain server in each storage server described does not upload the testing result of its concurrent access situations and memory capacity situation within the indication time interval to central server, then central server is divided into failed storage server, and for failed storage server triggers fault-tolerant scheduling strategy, simultaneously, upgrade the mapping relations of each files in stream media its subflow media file storage information corresponding, be stored in central server.

9. the storage means of a kind of Storage System for Stream Media according to claim 8, is characterized in that: described fault-tolerant scheduling strategy comprises the steps:

Whether described central server is searched in described caching server exists the backup stream media file corresponding with described failed server neutron current media file, if exist, then backup stream media file is copied in an effective storage server of random selecting, and upgrade the mapping relations of each files in stream media its subflow media file storage information corresponding, be stored in central server.