WO2022057935A1

WO2022057935A1 - Method and apparatus for obtaining data based on content delivery network

Info

Publication number: WO2022057935A1
Application number: PCT/CN2021/119446
Authority: WO
Inventors: 单卫华; 熊林
Original assignee: 华为云计算技术有限公司
Priority date: 2020-09-19
Filing date: 2021-09-18
Publication date: 2022-03-24
Also published as: CN114301903A

Abstract

The present application relates to the field of content delivery networks. Disclosed are a method and apparatus for obtaining data based on a content delivery network, solving the problem of how to quickly obtain accessed data. The method comprises: after the address of a content delivery server indicated by a content fingerprint address and a content fingerprint generated according to data to be accessed are obtained by a terminal device, obtaining the address of a content caching server from the content delivery server indicated by the address of the content delivery server, then obtaining data associated with the content fingerprint from the content caching server indicated by the address of the content caching server, and displaying a content expressed by the data.

Description

A method and device for acquiring data based on a content distribution network

technical field

The embodiments of the present application relate to the field of content distribution networks, and in particular, to a method and apparatus for acquiring data based on a content distribution network.

Background technique

At present, in order to solve the network congestion situation of the Internet, a content delivery network (CDN) is deployed based on the Internet. Access data is obtained, thereby improving the response speed of end users accessing the website. FIG. 1 is a schematic structural diagram of a content distribution network provided in the prior art. When the terminal user accesses the content provided by the website through the browser 111 or the application 112 installed on the terminal device 110, the terminal device 110 sends a uniform resource locator (URL) to the domain name system (domain name system, DNS) server 120, the domain name The system server 120 parses the uniform resource locator, and feeds back the internet protocol (IP) address of the cache cluster 130 to the terminal device 120 . The terminal device 120 sends a data request including the uniform resource locator to the cache cluster 130 . The cache cluster 130 includes a plurality of content cache servers 131 . The content cache server 131 in the cache cluster 130 queries its corresponding data according to the uniform resource locator. If the content cache server 131 in the cache cluster 130 caches the data accessed by the terminal device 110 , the data is fed back to the terminal device 110 . If the content cache server 131 in the cache cluster 130 does not cache the data accessed by the terminal device 110 , the data is obtained from the content source 140 that provides the data, and the data is fed back to the terminal device 110 . However, if the uniform resource locator is invalid or modified, even if the content cache server stores data, the content cache server cannot query the data accessed by the end user, and cannot feed back the data to the terminal device. Therefore, how a terminal device can quickly acquire the accessed data is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a method and apparatus for acquiring data based on a content distribution network, which solves the problem of how to quickly acquire the accessed data.

In a first aspect, the present application provides a method for acquiring data based on a content distribution network, the method can be applied to a terminal device, or the method can be applied to a device that can support a terminal device to implement the method for acquiring data, for example, the acquiring data The device comprises a chip system, and the method includes: the terminal device obtains the address of the content distribution server indicated by the content fingerprint address and the first content fingerprint, obtains the address of the content cache server from the content distribution server, and then obtains the address of the content cache server from the content cache server. The server acquires the data associated with the first content fingerprint, and displays the content expressed by the data. The first content fingerprint is generated from the data to be accessed.

Since the content fingerprint address and the content fingerprint uniquely indicate a piece of data. The content fingerprint of the data changes as the data changes. When the data changes, the content fingerprint is also sent with changes. When the data does not change, the content fingerprint does not change. In the case that the uniform resource locator is invalid or modified, the terminal device can still obtain the data to be accessed from the content cache server according to the content fingerprint address or content fingerprint, so as to avoid the inability to query the data accessed by the end user and to send the The situation that the terminal equipment feeds back data improves the accuracy and rate of the terminal equipment acquiring data.

In addition, the uniform resource locator may contain sensitive information such as file names, which may easily lead to information leakage. In this embodiment, the content fingerprint address and the content fingerprint indication data are used to avoid information leakage and improve data security.

In a possible implementation manner, after acquiring the first content fingerprint and the address of the content distribution server from the content fingerprint address, the terminal device sends the content fingerprint address and the address of the terminal device to the content distribution server, or sends the content distribution server to the content distribution server. The first content fingerprint and the address of the terminal device; further, the address of the content cache server sent by the content distribution server is received. Therefore, it is convenient for the terminal device to obtain the data associated with the first content fingerprint from the content cache server indicated by the address of the content cache server.

Specifically, the terminal device sends the first content fingerprint to the content cache server indicated by the address of the content cache server; and receives the data associated with the first content fingerprint sent by the content cache server. Thus, the terminal device can display the content expressed by the data.

Resource tampering is a method commonly used by hackers. Hackers can forge and tamper with the data of the Uniform Resource Locator, and what the user accesses by using the Uniform Resource Locator may not be the original content. This embodiment also provides a method for verifying data. Specifically, after acquiring the data associated with the first content fingerprint from the content cache server indicated by the address of the content cache server, the method further includes: the terminal device generates a second content fingerprint by using a hash algorithm; when the first content fingerprint and the second content fingerprint are When the fingerprints are the same, the terminal device determines that the data has not been tampered with. Therefore, it is convenient for the terminal device to verify whether the acquired data has been tampered with according to the content fingerprint of the data, and to prompt the user whether the received data is correct.

In another possible implementation manner, before obtaining the address of the content cache server from the content distribution server according to the content fingerprint address, the method further includes: the terminal device may obtain the content fingerprint address from other servers in the content distribution network according to the identification of the data . Data is identified as a Uniform Resource Locator or resource name. For example, other servers may be Domain Name System servers. The domain name system server stores the correspondence between the identifier of the data and the content fingerprint address of the data. Therefore, it is convenient for the terminal device to obtain the address and content fingerprint of the content distribution server according to the content fingerprint address.

Optionally, after receiving the data acquisition instruction from the user, the terminal device acquires the content fingerprint address according to the data identifier.

In another possible implementation manner, the data is fragmented data contained in a resource indicated by a uniform resource locator or a resource name; obtaining a content fingerprint address according to an identifier of the data includes: obtaining a plurality of fragments included in the resource according to the identifier of the data The content fingerprint address of the slice data. In this way, the terminal device obtains fragmented data from multiple content cache servers, thereby effectively improving the efficiency of data acquisition by the terminal device and breaking through the bandwidth bottleneck of a single storage server.

In a second aspect, the present application provides a method for acquiring data based on a content distribution network, the method can be applied to a content distribution server, or the method can be applied to a device that can support the content distribution server to implement the method for distributing data, such as this The device for distributing data includes a chip system, and the method includes: the content distribution server receives the address and content fingerprint address of the terminal device sent by the terminal device, or, after receiving the address and content fingerprint of the terminal device sent by the terminal device, determine according to the address of the terminal device. The address of the content cache server associated with the content fingerprint, and the address of the content cache server is sent to the terminal device. The content fingerprint is generated according to the data to be accessed, and the content fingerprint address is used to indicate the content fingerprint and the address of the content distribution server. The content cache server indicated by the address of the content cache server stores the data and the content fingerprint.

Since the content fingerprint address and the content fingerprint uniquely indicate a piece of data. In the case that the Uniform Resource Locator is invalid or modified, the content distribution server informs the terminal device of the address of the content storage server where the data is stored, so that the terminal device can obtain the information associated with the content fingerprint from the content cache server indicated by the address of the content cache server. It avoids the situation that the data accessed by the terminal user cannot be queried, and the data cannot be fed back to the terminal device, thereby improving the accuracy and speed of the terminal device acquiring data.

In a possible implementation manner, the method further includes: the content distribution server receiving data sent by the content source; generating a content fingerprint according to the data, and generating a content fingerprint address; determining at least one content caching server according to the content fingerprint address; The cache server sends data and content fingerprints.

Since the content fingerprint address is generated based on the content fingerprint of the data and the address of the content distribution server, the content fingerprint address uniquely indicates a piece of data. The content distribution server distributes a piece of data to the same content cache server according to the content fingerprint address. It is understandable that the data corresponding to different content fingerprints stored by one content cache server are different, and the content fingerprints of the same data on different content cache servers are the same. Therefore, the disadvantage that the content cache server stores multiple copies of the same data when the uniform resource locators corresponding to the same piece of data are different is overcome. The redundant storage of the content cache server is avoided, and the utilization rate of the content cache server is improved.

In another possible implementation manner, the data is fragmented data contained in a resource indicated by a uniform resource locator or a resource name; the method further includes: the content distribution server divides the resource into multiple fragmented data, and each fragment is divided into multiple fragmented data. The content fingerprints of the data and fragmented data are stored to at least one content cache server. Therefore, it is convenient for the terminal device to acquire data from multiple content cache servers at the same time, which improves the rate at which the terminal device acquires data.

In a third aspect, the present application provides a method for sending data based on a content distribution network, the method can be applied to a content cache server, or the method can be applied to a device that can support the content cache server to implement the method for caching data, such as this The device for caching data includes a chip system, and the method includes: a content caching server receives a content fingerprint sent by a terminal device, determines data associated with the content fingerprint according to the content fingerprint; and sends the data associated with the content fingerprint to the terminal device. Content fingerprints are generated from the data to be accessed.

Since the content fingerprint address and the content fingerprint uniquely indicate a piece of data. When the uniform resource locator is invalid or modified, the content cache server can determine the data to be accessed by the user according to the content fingerprint, and send the data associated with the content fingerprint to the terminal device, avoiding the inability to query the data accessed by the terminal user. In the case where data cannot be fed back to the terminal device, the accuracy and rate of data acquisition by the terminal device are improved.

In a possible implementation manner, the data is fragmented data contained in a resource indicated by a uniform resource locator or a resource name.

In a fourth aspect, the present application provides an apparatus for acquiring data, where the apparatus for acquiring data includes functions of each module for executing the method in the first aspect or any possible implementation manner of the first aspect.

In a fifth aspect, the present application provides an apparatus for distributing data, where the apparatus for distributing data includes the functions of each module for executing the method in the second aspect or any possible implementation manner of the second aspect.

In a sixth aspect, the present application provides an apparatus for caching data, where the apparatus for caching data includes the functions of each module for executing the method in the third aspect or any possible implementation manner of the third aspect.

In a seventh aspect, the present application provides a computer, the computer includes a memory and a processor, the memory is used to store a set of computer instructions; when the processor executes the set of computer instructions, the first aspect or The functions of each module of the method in any possible implementation manner of the first aspect.

In an eighth aspect, the present application provides a computer, the computer includes a memory and a processor, the memory is used to store a set of computer instructions; when the processor executes the set of computer instructions, the second aspect or In the second aspect, the functions of each module of the method in any possible implementation manner.

In a ninth aspect, the present application provides a computer, the computer includes a memory and a processor, the memory is used to store a set of computer instructions; when the processor executes the set of computer instructions, the third aspect or The third aspect is the function of each module of the method in any possible implementation manner.

In a tenth aspect, the present application provides a computer-readable storage medium, including computer software instructions; when the computer software instructions are executed in a computer, the computer is made to execute the first aspect or any one of the possible implementations of the first aspect. method described.

In an eleventh aspect, the present application provides a computer-readable storage medium, comprising computer software instructions; when the computer software instructions are executed in a computer, the computer is made to execute any one of the second aspect or possible implementations of the second aspect the method described.

In a twelfth aspect, the present application provides a computer-readable storage medium, comprising computer software instructions; when the computer software instructions are executed in a computer, the computer is made to execute any one of the third aspect or possible implementations of the third aspect the method described.

In a thirteenth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, cause the computer to perform the method described in the first aspect or any one of the implementations of the first aspect.

In a fourteenth aspect, the present application provides a computer program product comprising instructions, which, when run on a computer, cause the computer to perform the method described in the second aspect or any one of the implementations of the second aspect.

In a fifteenth aspect, the present application provides a computer program product comprising instructions, which, when run on a computer, cause the computer to perform the method described in the third aspect or any one of the implementation manners of the third aspect.

On the basis of the implementation manners provided by the above aspects, the present application may further combine to provide more implementation manners.

Description of drawings

1 is a schematic structural diagram of a content distribution network provided by the prior art;

2 is a schematic structural diagram of a content distribution network according to an embodiment of the present application;

3 is a flowchart of a method for distributing data according to an embodiment of the present application;

4 is a flowchart of another method for distributing data provided by an embodiment of the present application;

5 is a schematic diagram of an interface display of data content provided by an embodiment of the present application;

6 is a flowchart of a method for acquiring data based on a content distribution network provided by an embodiment of the present application;

7 is a schematic structural diagram of another content distribution network provided by an embodiment of the present application;

8 is a flowchart of another method for acquiring data based on a content distribution network provided by an embodiment of the present application;

9 is a flowchart of another method for acquiring data based on a content distribution network provided by an embodiment of the present application;

10 is a schematic structural diagram of an apparatus for acquiring data according to an embodiment of the present application;

11 is a schematic structural diagram of an apparatus for distributing data according to an embodiment of the present application;

12 is a schematic structural diagram of an apparatus for caching data provided by an embodiment of the present application;

13 is a schematic structural diagram of a computer according to an embodiment of the present application;

14 is a schematic structural diagram of another computer provided by an embodiment of the present application;

FIG. 15 is a schematic structural diagram of another computer provided by an embodiment of the present application.

detailed description

The terms "first", "second" and "third" in the description and claims of the present application and the above drawings are used to distinguish different objects, rather than to limit a specific order.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

"Plurality" means two or more, and other quantifiers are similar. "And/or" describes the association relationship between associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. Furthermore, occurrences of the singular forms "a", "an" and "the" do not mean "one or only one" unless the context clearly dictates otherwise, but rather "one or more" in one". For example, "a device" means to one or more such devices. Furthermore, at least one (at least one of)...." means one or any combination of subsequent associated objects, for example "at least one of A, B and C" includes A, B, C, AB, AC, BC, or ABC.

The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

FIG. 2 shows an exemplary diagram of an architecture of a content distribution network that can be applied to this embodiment of the present application. As shown in FIG. 2 , the content distribution network includes a plurality of cache clusters 210 . The cache cluster 210 includes a content distribution server 211 and a plurality of content cache servers 212 . The content distribution server 211 is connected to a plurality of content cache servers 212 . Typically, a cache cluster can be deployed based on the size of the geographic extent. For example, a cache cluster 210 is deployed in the range of a zone, and terminal devices within the range of the zone can obtain data from the content cache server 212 in the cache cluster 210 . For another example, a cache cluster 210 is deployed within the scope of a city, and terminal devices within the scope of the city can obtain data from the content cache server 212 in the cache cluster 210 . If the geographic scope is large, you can deploy multi-level cache clusters, and the multi-level cache clusters are connected in sequence. For example, a content distribution server 211 in a cache cluster 210 within a district may be connected to a content distribution server 211 in a cache cluster 210 within a city. FIG. 2 is only a schematic diagram, and the content distribution network may also include other devices, such as a configuration center, routers, and switches of the content distribution network, which are not shown in FIG. 2 . The embodiments of the present application do not limit the number of cache clusters, content distribution servers, and content cache servers included in the content distribution network.

The content distribution server 211 is used for distributing the data acquired from the content source 220 to at least one content caching server 212, and the data is stored by the at least one content caching server 212, so that the terminal device 230 can obtain the data from the best content caching server 212 as quickly as possible to obtain the accessed data. The optimal content cache server 212 may be the server closest to the terminal device 230 , or may be the server with the fastest transmission speed in the cache cluster 210 . The content source 220 may be a resource provider's server, or may be a content cache server 212 in another cache cluster 210 .

FIG. 3 is a flowchart of a method for distributing data based on a content distribution network according to an embodiment of the present application.

S310 , the content distribution server 211 receives the data sent by the content source 220 .

The data received by the content distribution server 211 may be actively sent by the content source 220 to the content distribution server 211. Optionally, the data received by the content distribution server 211 is the received data sent by the content source 220 after the content distribution server 211 actively sends a request message to the content source 220 .

S320. The content distribution server 211 generates a content fingerprint of the data.

A content fingerprint is a string of letters and numbers generated from data using a hash algorithm (eg: MD5). A content fingerprint uniquely indicates the data that generated the content fingerprint. The content fingerprint of the data changes as the data changes. When the data changes, the content fingerprint is also sent with changes. For example, the content fingerprint could be 5971bed8bbe98aacca48acc93eaf58d4.

S330. The content distribution server 211 generates a content fingerprint address of the data.

A content fingerprint address is a queryable address that contains a content fingerprint.

In some possible implementations, the content distribution server 211 may generate the content fingerprint address according to the content fingerprint and the address of the content distribution server 211 . For example, the content distribution server 211 splices the content fingerprint and the address of the content distribution server 211 to generate the content fingerprint address. For example, the content fingerprint address is http://192.168.100.101:8090/resourcePeers? resourceId=5971bed8bbe98aacca48acc93eaf58d4. Among them, 192.168.100.101:8090 represents the address of the content distribution server 211, and 5971bed8bbe98aacca48acc93eaf58d4 represents the content fingerprint.

In some other possible implementation manners, the content distribution server 211 may generate the content fingerprint address according to the content fingerprint and the domain name of the content distribution server 211 . For example, the content distribution server 211 splices the content fingerprint and the domain name of the content distribution server 211 to generate the content fingerprint address. For another example, the content fingerprint address is http://ept.ipcdn.huaweicloud.com:8090/resourcePeers? resourceId=5971bed8bbe98aacca48acc93eaf58d4. Wherein, ept.ipcdn.huaweicloud.com:8090 represents the domain name of the content distribution server 211, and 5971bed8bbe98aacca48acc93eaf represents the content fingerprint.

For another example, the content distribution server 211 uses an encryption algorithm to encrypt the content fingerprint and the address of the content distribution server 211 to generate the content fingerprint address.

Optionally, the content distribution server 211 publishes the generated content fingerprint address to a server on the Internet (eg, a website, an application store, etc.). The server on the Internet stores the corresponding relationship between the resource name and the content fingerprint address, or stores the corresponding relationship between the content uniform resource locator and the content fingerprint address.

Optionally, the content distribution server 211 publishes the generated content fingerprint address to the domain name system server, and the domain name system server stores the corresponding relationship between the content uniform resource locator and the content fingerprint address, or stores the corresponding relationship between the resource name and the content fingerprint address. .

S340: The content distribution server 211 determines at least one content cache server 212 according to the content fingerprint address.

The content distribution server 211 may determine at least one content cache server 212 according to a load balancing technology, so that each content cache server 212 stores data of an optimally matched amount of data that it can load.

S350: The content distribution server 211 sends the data and the content fingerprint to at least one content cache server 212.

Each of the at least one content caching server 212 stores data and content fingerprints sent by the content distribution server 211 .

In some embodiments, at least one content cache server 212 includes all content cache servers 212 in the cache cluster 210 . Understandably, the content distribution server 211 determines all the content cache servers 212 in the cache cluster 210 according to the content fingerprint addresses, distributes the data and content fingerprints to all the content cache servers 212 in the cache cluster 210, and caches each content in the cache cluster 210. The cache server 212 stores data and content fingerprints.

In other embodiments, the at least one content cache server 212 includes a portion of the content cache servers 212 in the cache cluster 210 . Understandably, the content distribution server 211 determines some content cache servers 212 in the cache cluster 210 according to the content fingerprint addresses, distributes data and content fingerprints to some content cache servers 212 in the cache cluster 210, and caches some content in the cache cluster 210. Server 212 stores data and content fingerprints.

Since the content fingerprint address is generated based on the content fingerprint of the data and the address of the content distribution server 211, the content fingerprint address and the content fingerprint uniquely indicate a piece of data. The content distribution server 211 distributes a piece of data to the same content cache server 212 according to the content fingerprint address. It is understandable that the data corresponding to different content fingerprints stored by one content cache server 212 is different, and the content fingerprints of the same data on different content cache servers 212 are the same. Therefore, the disadvantage of storing multiple copies of the same data when the uniform resource locators corresponding to the same piece of data are different is overcome. The redundant storage of the content cache server is avoided, and the utilization rate of the content cache server is improved.

In another possible implementation manner, if the data volume of the resource acquired by the content distribution server 211 from the content source 220 is relatively large, the resource may be divided into multiple pieces of data and distributed to the multiple content cache servers 212 respectively. data per shard. FIG. 4 is a flowchart of another method for distributing data based on a content distribution network according to an embodiment of the present application. The difference from the method shown in FIG. 3 is that after the content distribution server 211 receives the resource sent by the content source 220 (execute S410 ), the content distribution server 211 divides the resource into multiple pieces of data (execute S420 ). For example, the content distribution server 211 divides resources according to content size or resource type, and obtains multiple pieces of data. For example, the content distribution server 211 divides the video file in units of a data amount of 1 megabytes (M). For example, the content distribution server 211 divides an Android application package (android application package, APK) with a data volume of 2M as a unit. Further, the content distribution server 211 traverses the segmented data obtained by division, and for each segmented data, the content distribution server 211 executes S430 to S460 until all segmented data is traversed, and stores each segmented data in multiple content caches server 212.

S430. The content distribution server 211 generates a content fingerprint of the fragmented data.

S440. The content distribution server 211 generates a content fingerprint address of the fragmented data.

S450. The content distribution server 211 determines at least one content cache server 212 according to the content fingerprint address of the fragmented data.

S460: The content distribution server 211 sends the fragmented data and the content fingerprint of the fragmented data to at least one content cache server 212.

For the explanation of S430 to S460, reference may be made to the explanation of S320 to S350 above.

Therefore, it is convenient for the terminal device to acquire data from multiple content cache servers 212 at the same time, which improves the rate at which the terminal device acquires data.

Optionally, the content distribution server 211 may also store data and content fingerprints of the data, that is, the functions of the content distribution server 211 may be deployed on any content cache server 212 in the cache cluster 210 .

The terminal device 230 may also be referred to as a terminal (terminal), a user equipment (UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and the like. The terminal device can be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

As shown in FIG. 2 , the terminal device 230 is installed with a client (eg, a browser 231 or an application 232 ). The client (client) can also be called the client, which corresponds to the server and provides local services to users. The interface of the client can display various contents (such as videos, news, pictures, etc.). The terminal user can click on the interface of the client, and the terminal device 230 sends a request message to the content distribution network, acquires the data, and uses the display to display the content expressed by the data.

For example, as shown in (a) of FIG. 5 , if the end user searches for a video about star A in the search box, a plurality of videos about star A are displayed on the interface of the browser 231 . The user can click on the video 4 of the star A displayed on the interface of the browser 231 (501), the terminal device 230 responds to the click operation of the terminal user, and the content fingerprint address of the video 4 of the star A can also be displayed on the interface of the browser 231, and Send a request message to the content distribution network to obtain the resources of Star A's video 4. The content fingerprint address of the video 4 of star A includes the address of the content distribution network and the content fingerprint of the video 4 of star A. As shown in (b) of FIG. 5 , after the terminal device 230 acquires the resource of the video 4 of the star A, the display interface of the terminal device 230 displays the content of the video 4 of the star A (502).

For another example, as shown in (c) of FIG. 5 , the end user clicks on the video 503 displayed on the interface of the application 232 . At this time, the application interface may not display the content fingerprint address of the video 503 . The terminal device 230 responds to the user's click operation, and sends a request message to the content distribution network to obtain video resources. As shown in (d) of FIG. 5 , the display interface of the terminal device 230 displays the content of the playing video.

The content distribution network may further include a control server, the control server determines a cache cluster in the content distribution network, and feeds back the address of the cache cluster 210 to the terminal device 230 . The cache cluster 210 indicated by the control server may be the cache cluster closest to the terminal device 230, or may be the cache cluster with the fastest transmission speed. In the content distribution server 211 in the cache cluster 210 indicated by the control server, the terminal device 230 obtains the address of the content cache server 212 according to the content fingerprint address, and obtains the data associated with the content fingerprint from the content cache server 212 indicated by the address of the content cache server 212 .

Next, a method for acquiring data by a terminal device will be described in detail with reference to FIG. 6 to FIG. 9 .

FIG. 6 is a flowchart of a method for acquiring data based on a content distribution network according to an embodiment of the present application.

S601. The terminal device 230 obtains the content fingerprint address according to the identifier of the data.

The identification of the data can be a uniform resource locator (uniform resource locator, URL) or a resource name. The terminal user clicks on the content displayed on the display interface, and the terminal device 230 responds to the click operation of the terminal user and obtains the content fingerprint address according to the identifier of the data. A Uniform Resource Locator is a representation on the Internet's World Wide Web Services for specifying the location of information. The terminal device 230 may obtain the content fingerprint address from the other server 240 shown in FIG. 7 according to the identification of the data. Other servers 240 may be servers on the Internet (eg, websites, application malls, etc.) or domain name system servers.

In some embodiments, a server on the Internet stores the correspondence between resource names and content fingerprint addresses. The terminal device 230 may send the resource name to the server on the Internet, and receive the content fingerprint address corresponding to the resource name sent by the server on the Internet. As shown in Table 1.

Table 1

As can be seen from Table 1, the content fingerprint address corresponding to resource name 1 is content fingerprint address 1. The content fingerprint address corresponding to resource name 2 is content fingerprint address 2 . The content fingerprint address corresponding to resource name 3 is content fingerprint address 3 .

Assuming that the identifier of the data sent by the terminal device 230 is the resource name 2, the terminal device 230 can obtain the content fingerprint address 2.

In other embodiments, the DNS server stores the correspondence between the uniform resource locator and the content fingerprint address. The terminal device 230 may send the content uniform resource locator to the domain name system server, and receive the content fingerprint address corresponding to the content uniform resource locator sent by the domain name system server. As shown in table 2.

Table 2

It can be seen from Table 2 that the content fingerprint address corresponding to the uniform resource locator 1 is the content fingerprint address 1. The content fingerprint address corresponding to the uniform resource locator 2 is the content fingerprint address 2 . The content fingerprint address corresponding to the uniform resource locator 3 is the content fingerprint address 3 .

Assuming that the identifier of the data sent by the terminal device 230 is the uniform resource locator 2, the terminal device 230 can obtain the content fingerprint address 2.

Optionally, the content fingerprint address can also be embedded in the Uniform Resource Locator. The terminal device 230 can obtain the content fingerprint address of the data from the uniform resource locator of the data.

Optionally, after the terminal device 230 receives the data acquisition instruction from the terminal user, the terminal device 230 acquires the content fingerprint address according to the data identifier.

S602. The terminal device 230 acquires the first content fingerprint and the address of the content distribution server 211 from the content fingerprint address.

The content fingerprint address is generated according to the first content fingerprint and the address of the content distribution server 211 . In a possible implementation manner, the content fingerprint address is formed by splicing the first content fingerprint and the address of the content distribution server 211. For example, the x bits in the content fingerprint address indicate the address of the content distribution server 211, and the y bits in the content fingerprint address indicate the first content fingerprint. For a specific explanation, reference may be made to the description of S330.

Optionally, if the content fingerprint address is generated according to the first content fingerprint and the domain name of the content distribution server 211 . After acquiring the domain name of the content distribution server 211, the terminal device 230 can send the domain name of the content distribution server 211 to the domain name system server, the domain name system server parses the domain name of the content distribution server 211, and receives the content distribution server 211's domain name sent by the domain name system server. address.

In a possible implementation manner, the content fingerprint address is generated after the content distribution server 211 encrypts the first content fingerprint and the address of the content distribution server 211 by using an encryption algorithm. The terminal device 230 can use a preset decryption algorithm to parse the content fingerprint address to obtain the first content fingerprint and the address of the content distribution server 211 . The preset decryption algorithm is the same algorithm used when the content distribution server 211 generates the content fingerprint address.

S603 , the terminal device 230 sends the content fingerprint address and the address of the terminal device 230 to the content distribution server 211 .

S604 , the content distribution server 211 receives the content fingerprint address and the address of the terminal device 230 sent by the terminal device 230 .

Optionally, in S603a, the terminal device 230 sends the first content fingerprint and the address of the terminal device 230 to the content distribution server 211. S604a: The content distribution server 211 receives the first content fingerprint and the address of the terminal device 230 sent by the terminal device 230.

S605 , the content distribution server 211 determines the address of the content cache server 212 associated with the first content fingerprint according to the address of the terminal device 230 .

The content distribution server 211 may store the content fingerprint address, the correspondence between the content fingerprint and the address of the content cache server. The content distribution server 211 receives the first content fingerprint or content fingerprint address sent by the terminal device 230, and determines the address of the content cache server 212 associated with the first content fingerprint according to the first content fingerprint or content fingerprint address query correspondence. The content cache server 212 indicated by the address of the content cache server 212 stores the first content fingerprint and data associated with the first content fingerprint. example, as shown in Table 3.

table 3

If the first content fingerprint is content fingerprint 1, the content distribution server 211 looks up the table to determine that the address of the content cache server 212 associated with content fingerprint 1 is address 1. If the content distribution server 211 receives the content fingerprint address 1, it looks up the table to determine that the content fingerprint address 1 corresponds to the content fingerprint 1, and the address of the content cache server 212 associated with the content fingerprint 1 is the address 1.

If the first content fingerprint is content fingerprint 2, the content distribution server 211 looks up the table to determine that the addresses of the content cache server 212 associated with content fingerprint 2 include address 2, address 3 and address 4. It is understandable that the content distribution server 211 stores the data of content fingerprint 2 and content fingerprint 2 from the content cache server 212 indicated by address 2, address 3 and address 4.

The content distribution server 211 selects an optimal content caching server 212 from the content caching servers 212 indicated by address 2, address 3 and address 4 according to the address of the terminal device 230, and feeds back the address of the optimal content caching server 212 to the terminal device 230. . The optimal content caching server 212 may be the content caching server closest to the terminal device 230, or may be the content caching server with the fastest transmission speed. Assume that the best content cache server 212 is the content cache server 212 indicated by address 2 . The terminal device 230 may acquire data from the content cache server 212 .

S606 , the content distribution server 211 sends the address of the content cache server 212 to the terminal device 230 .

S607: The terminal device 230 receives the address of the content cache server 212 sent by the content distribution server 211.

S608: The terminal device 230 sends the first content fingerprint to the content cache server indicated by the address of the content cache server 212.

S609: The content cache server 212 receives the first content fingerprint sent by the terminal device 230.

S610. The content cache server 212 determines data associated with the first content fingerprint according to the first content fingerprint.

The content cache server 212 stores content fingerprints and data associated with the content fingerprints. The content cache server 212 may query the corresponding relationship according to the first content fingerprint to obtain data associated with the first content fingerprint.

S611. The content cache server 212 sends the data associated with the first content fingerprint to the terminal device 230.

S612: The terminal device 230 receives the data associated with the first content fingerprint sent by the content cache server 212.

S613. The terminal device 230 displays the content expressed by the data.

Since the content fingerprint address and the content fingerprint uniquely indicate a piece of data. The content fingerprint of the data changes as the data changes. When the data changes, the content fingerprint is also sent with changes. When the data does not change, the content fingerprint does not change. In the case that the uniform resource locator is invalid or modified, the terminal device 230 can still obtain the data to be accessed according to the content fingerprint address or content fingerprint, so as to avoid the inability to query the data accessed by the terminal user and to feed back data to the terminal device. In this case, the data acquisition rate of the terminal device is improved.

Resource tampering is a method commonly used by hackers. Hackers can forge and tamper with the data of the Uniform Resource Locator, and what the user accesses by using the Uniform Resource Locator may not be the original content.

Optionally, as shown in FIG. 8 , after acquiring the data associated with the first content fingerprint from the content caching server indicated by the address of the content caching server, the terminal device 230 may further verify the acquired data. The method also includes the following steps.

S614. The terminal device 230 generates a second content fingerprint by using a hash algorithm.

S615. The terminal device 230 determines whether the first content fingerprint and the second content fingerprint are the same.

When the first content fingerprint and the second content fingerprint are the same, execute S616; when the first content fingerprint and the second content fingerprint are different, execute S617.

S616. The terminal device 230 determines that the data has not been tampered with.

S617. The terminal device 230 determines that the data has been tampered with.

In this way, the terminal device 230 can verify whether the received data has been tampered with.

In another possible implementation manner, the data is fragmented data of the resource indicated by the uniform resource locator. For example, the video being watched by the end user is stuck, and the data that the end user needs to obtain is the fragmented data in the resource. The terminal device 230 may acquire the fragmented data in the resource according to the above S601 to S617.

When the terminal device 230 acquires the resource indicated by the uniform resource locator for the first time, it acquires, according to the uniform resource locator, the content fingerprint address of the resource including multiple pieces of data.

FIG. 9 is a flowchart of another method for acquiring data based on a content distribution network according to an embodiment of the present application. The difference from the method shown in FIG. 6 above is that in S901 , the terminal device 230 obtains, according to the uniform resource locator, the content fingerprint address of the resource including multiple pieces of data. The terminal device 230 traverses the content fingerprint addresses of a plurality of fragmented data, and for the content fingerprint addresses of each fragmented data, the terminal device 230 executes S602 to S617 until the content fingerprint addresses of all fragmented data are traversed, and obtains each of the resources. Sharded data.

In this way, the terminal device 230 acquires fragmented data from multiple content cache servers 212 in parallel, thereby effectively improving the data acquisition efficiency of the terminal device 230 and breaking the bandwidth bottleneck of a single storage server.

It can be understood that, in order to realize the functions in the foregoing embodiments, the terminal device and the server include corresponding hardware structures and/or software modules for performing each function. Those skilled in the art should easily realize that the units and method steps of each example described in conjunction with the embodiments disclosed in the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application scenarios and design constraints of the technical solution.

FIG. 10 is a schematic structural diagram of a possible apparatus for acquiring data provided by an embodiment of the present application. These apparatuses for acquiring data can be used to implement the functions of the terminal device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In this embodiment of the present application, the apparatus for acquiring data may be the terminal device 230 as shown in FIG. 2 , or may be a module (eg, a chip) applied to the terminal device 230 .

As shown in FIG. 10 , the apparatus 1000 for acquiring data includes a communication module 1010 , an analysis content fingerprint address module 1020 and a display module 1030 . The apparatus 1000 for acquiring data is used to implement the function of the terminal device 230 in the method embodiment shown in FIG. 6 , FIG. 8 or FIG. 9 .

When the apparatus 1000 for acquiring data is used to implement the function of the terminal device 230 in the method embodiment shown in FIG. 6 : the communication module 1010 is used to execute S601, S603 (or S603a), S607, S608 and S612; the analysis content fingerprint address module 1020 is used to execute S602; the display module 1030 is used to execute S613.

When the apparatus 1000 for acquiring data is used to implement the function of the terminal device 230 in the method embodiment shown in FIG. 8 : the communication module 1010 is used to execute S601, S603 (or S603a), S607, S608 and S612; the analysis content fingerprint address module 1020 is used to execute S602; the display module 1030 is used to execute S613. Optionally, the apparatus 1000 for acquiring data may further include a content fingerprint generation module 1040 and a decision module 1050 . The generating content fingerprint module 1040 is used to execute S614; the decision module 1050 is used to execute S615 to S617.

When the apparatus 1000 for acquiring data is used to implement the function of the terminal device 230 in the method embodiment shown in FIG. 9 : the communication module 1010 is used to execute S901, S603 (or S603a), S607, S608 and S612; the analysis content fingerprint address module 1020 is used to execute S602; the display module 1030 is used to execute S613; the content fingerprint generation module 1040 is used to execute S614; the decision module 1050 is used to execute S615 to S617.

For more detailed descriptions of the above communication module 1010, analyzing content fingerprint address module 1020, displaying module 1030, generating content fingerprinting module 1040 and decision module 1050, please refer to the relevant descriptions in the method embodiments shown in FIG. 6, FIG. 8 or FIG. 9 directly. obtained, and will not be repeated here.

FIG. 11 is a schematic structural diagram of a possible apparatus for distributing data provided by an embodiment of the present application. These apparatuses for distributing data can be used to implement the function of the content distribution server in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In this embodiment of the present application, the device for distributing data may be the content distribution server 211 as shown in FIG. 2 , or may be a module (eg, a chip) applied to the content distribution server 211 .

As shown in FIG. 11 , the apparatus 1100 for distributing data includes a communication module 1110 , a generation module 1120 and a content cache server address determination module 1130 . The apparatus 1100 for distributing data is configured to implement the function of the content distribution server 211 in the method embodiment shown in FIG. 3 , FIG. 4 , FIG. 6 , FIG. 8 or FIG. 9 .

When the apparatus 1100 for distributing data is used to implement the function of the content distribution server 211 in the method embodiment shown in FIG. 3 : the communication module 1110 is used to execute S310 and S350; the generation module 1120 is used to execute S320 and S330; The address module 1130 is used to execute S340.

When the apparatus 1100 for distributing data is used to implement the function of the content distribution server 211 in the method embodiment shown in FIG. 4: the communication module 1110 is used to execute S410 and S460; the generation module 1120 is used to execute S430 and S440; The address module 1130 is used to execute S450. Optionally, the apparatus 1100 for distributing data may further include a dividing module 1140 . The dividing module 1140 is configured to perform S420.

When the apparatus 1100 for distributing data is used to implement the function of the content distribution server 211 in the method embodiment shown in FIG. 6, FIG. 8 or FIG. 9: the communication module 1110 is used to execute S604 (or S604a) and S606; determine the content cache server The address module 1130 is used to execute S605.

The apparatus 1100 for distributing data further includes a storage module 1150, and the storage module 1150 is configured to cache the content fingerprint address, the correspondence between the content fingerprint and the address of the content cache server.

For more detailed description of the above-mentioned communication module 1110 , generation module 1120 , content cache server address determination module 1130 and division module 1140 , reference may be made to the relevant descriptions in the method embodiments shown in FIG. 3 , FIG. 4 , FIG. 6 , FIG. 8 or FIG. 9 It is obtained directly and will not be repeated here.

FIG. 12 is a schematic structural diagram of a possible apparatus for caching data provided by an embodiment of the present application. These apparatuses for caching data can be used to implement the function of the content caching server in the above method embodiments, so the beneficial effects of the above method embodiments can also be achieved. In this embodiment of the present application, the device for caching data may be the content caching server 212 shown in FIG. 2 , or may be a module (eg, a chip) applied to the content caching server 212 .

As shown in FIG. 12 , the apparatus 1200 for buffering data includes a communication module 1210 and a data determination module 1220 . The apparatus 1200 for caching data is used to implement the function of the content caching server 212 in the method embodiment shown in FIG. 6 , FIG. 8 or FIG. 9 .

When the apparatus 1200 for caching data is used to implement the function of the content caching server 212 in the method embodiment shown in FIG. 6 , FIG. 8 or FIG. 9 : the communication module 120 is used for executing S609 and S611 ; the determining data module 1220 is used for executing S610 .

The apparatus 1200 for caching data further includes a storage module 1230, and the storage module 1230 is configured to cache content fingerprints and data associated with the content fingerprints.

More detailed descriptions of the communication module 1210 and the data determination module 1220 can be obtained directly by referring to the relevant descriptions in the method embodiments shown in FIG. 3 , FIG. 4 , FIG. 6 , FIG. 8 or FIG.

13 to 15 provide a computer. The computer 1300 shown in FIG. 13 can be specifically used to implement the functions of the data acquisition apparatus 1000 in the embodiment shown in FIG. 10 , and the computer 1400 shown in FIG. 14 can be specifically used to implement the data distribution in the embodiment shown in FIG. 11 . The computer 1500 shown in FIG. 15 can specifically be used to implement the functions of the apparatus 1200 for caching data in the embodiment shown in FIG. 12 above.

Computer 1300 includes bus 1301, processor 1302, communication interface 1303, memory 1304, and display 1305. Communication among the processor 1302 , the memory 1304 , the communication interface 1303 and the display 1305 is through the bus 1301 . The bus 1301 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus or the like. The bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in FIG. 13, but it does not mean that there is only one bus or one type of bus. The communication interface 1303 is used for external communication, such as receiving the content fingerprint address, the address and data of the content cache server, and the like. The display 1305 may be a liquid crystal display (liquid crystal display, LCD) or an organic light-emitting display (Organic Light-Emitting Diode, OLED) or the like.

The processor 1302 may be a central processing unit (central processing unit, CPU). Memory 1304 may include volatile memory, such as random access memory (RAM). The memory 1304 may also include non-volatile memory, such as read-only memory (ROM), flash memory, HDD, or SSD.

Executable code is stored in the memory 1304, and the processor 1302 executes the executable code to execute the aforementioned method for acquiring data based on a content distribution network.

Specifically, in the case where the embodiment shown in FIG. 10 is implemented, and each module described in the embodiment in FIG. 10 is implemented by software, the memory 1304 stores and executes the analysis content fingerprint address module 1020 in FIG. The software or program code required for the functions of the content fingerprint module 1040 and the decision module 1050, the communication interface 1303 realizes the function of the communication module 1010, the display 1305 realizes the function of the display module 1030, the processor is used to execute the instructions in the memory 1304, A method for acquiring data based on a content distribution network of the apparatus 1000 for acquiring data.

Computer 1400 includes bus 1401 , processor 1402 , communication interface 1403 and memory 1404 . The processor 1402 , the memory 1404 and the communication interface 1403 communicate through the bus 1401 . When the computer 1400 implements the embodiment shown in FIG. 11 , and each module described in the embodiment of FIG. 11 is implemented by software, the memory 1404 stores and executes the generation module 1120 in FIG. 11 and determines the address of the content cache server. Software or program code required for the functions of module 1130 and partition module 1140 . The memory 1404 stores the content fingerprint address, the correspondence between the content fingerprint and the address of the content cache server. The communication interface 1403 implements the function of the communication module 1110, the memory 1404 implements the function of the storage module 1150, and the processor 1402 is used to execute the instructions in the memory 1404 and execute the method for obtaining data based on the content distribution network applied to the apparatus 1100 for distributing data.

Computer 1500 includes bus 1501 , processor 1502 , communication interface 1503 and memory 1504 . The processor 1502 , the memory 1504 and the communication interface 1503 communicate through the bus 1501 . When the computer 1500 implements the embodiment shown in FIG. 12 , and each module described in the embodiment of FIG. 12 is implemented by software, the memory 1504 stores the software or software required to execute the function of the determination data module 1220 in FIG. 12 . The program code, the communication interface 1503 realizes the function of the communication module 1201, the memory 1504 is used to store the content fingerprint and the data associated with the content fingerprint, the processor is used to execute the instructions in the memory 1504, and execute the content-based distribution applied to the device 1200 for caching data The method by which the network sends data.

Embodiments of the present application also provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to execute the above-mentioned method for acquiring data based on a content distribution network applied to the apparatus 1000 for acquiring data.

Embodiments of the present application also provide a computer-readable storage medium, including instructions, which, when run on a computer, cause the computer to execute the above-mentioned method for obtaining data based on a content distribution network applied to the apparatus 1100 for distributing data.

Embodiments of the present application also provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to execute the above-mentioned method for sending data based on a content distribution network applied to the apparatus 1200 for caching data.

Embodiments of the present application further provide a computer program product, and when the computer program product is executed by a computer, the computer executes any one of the foregoing methods. The computer program product may be a software installation package, and when any one of the aforementioned methods needs to be used, the computer program product may be downloaded and executed on a computer.

In addition, it should be noted that the device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be A physical unit, which can be located in one place or distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. In addition, in the drawings of the device embodiments provided in the present application, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.

From the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general-purpose hardware. Special components, etc. to achieve. Under normal circumstances, all functions completed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structures used to implement the same function can also be various, such as analog circuits, digital circuits or special circuit, etc. However, a software program implementation is a better implementation in many cases for this application. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art. The computer software products are stored in a readable storage medium, such as a floppy disk of a computer. , U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., including several instructions to enable a computer device (which may be a personal computer, training device, or network device, etc.) to execute the various embodiments of the application. method.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be retrieved from a website, computer, training device, or data Transmission from the center to another website site, computer, training facility or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be stored by a computer, or a data storage device such as a training device, a data center, or the like that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), and the like.

Claims

A method for obtaining data based on a content distribution network, comprising:

Obtain the address of the content cache server from the content distribution server according to the content fingerprint address, where the content fingerprint address is used to indicate the address and content fingerprint of the content distribution server, and the content fingerprint is generated according to the data to be accessed;

Obtain the data associated with the content fingerprint from the content cache server indicated by the address of the content cache server;

Display what the data expresses.
The method according to claim 1, wherein obtaining the address of the content cache server from the content distribution server according to the content fingerprint address, comprising:

Obtain the content fingerprint and the address of the content distribution server from the content fingerprint address;

Send the content fingerprint address and the address of the terminal device to the content distribution server, or send the content fingerprint and the address of the terminal device to the content distribution server;

The address of the content cache server sent by the content distribution server is received.
The method according to claim 1 or 2, wherein acquiring the data associated with the content fingerprint from a content cache server indicated by the address of the content cache server comprises:

sending the content fingerprint to the content cache server indicated by the address of the content cache server;

The data associated with the content fingerprint sent by the content cache server is received.
The method according to any one of claims 1-3, wherein before acquiring the address of the content cache server from the content distribution server according to the content fingerprint address, the method further comprises:

The content fingerprint address is obtained according to the identifier of the data, where the identifier of the data is a uniform resource locator or a resource name.
The method according to claim 4, wherein obtaining the content fingerprint address according to the identifier of the data comprises:

After receiving the instruction from the user to obtain the data, the content fingerprint address is obtained according to the identifier of the data.
The method according to claim 4 or 5, wherein the data is fragmented data contained in a resource indicated by a uniform resource locator or a resource name;

Obtaining the content fingerprint address according to the identifier of the data includes:

The content fingerprint addresses of multiple pieces of data contained in the resource are acquired according to the identifier of the data.
A method for obtaining data based on a content distribution network, comprising:

Receive the address and content fingerprint address of the terminal device sent by the terminal device, or receive the address and content fingerprint of the terminal device sent by the terminal device, where the content fingerprint is generated according to the data to be accessed, and the content fingerprint The address is used to indicate the content fingerprint and the address of the content distribution server;

Determine the address of the content cache server associated with the content fingerprint according to the address of the terminal device, where the content cache server indicated by the address of the content cache server stores the data and the content fingerprint;

Send the address of the content cache server to the terminal device.
The method according to claim 7, wherein the method further comprises:

receiving said data sent by a content source;

generating the content fingerprint according to the data, and generating the content fingerprint address;

Determine at least one content cache server according to the content fingerprint address;

The data and the content fingerprint are sent to the at least one content cache server.
The method according to claim 8, wherein the data is fragmented data contained in a resource indicated by a uniform resource locator or a resource name; the method further comprises:

The resource is divided into multiple pieces of data.
A device for acquiring data, comprising:

The communication module is used to obtain the address of the content cache server from the content distribution server according to the content fingerprint address, the content fingerprint address is used to indicate the address and content fingerprint of the content distribution server, and the content fingerprint is generated according to the data to be accessed of;

The communication module is further configured to obtain the data associated with the content fingerprint from the content cache server indicated by the address of the content cache server;

The display module is used to display the content expressed by the data.
The device according to claim 10, wherein the device further comprises an analysis content fingerprint address module,

The analyzing content fingerprint address module is used to obtain the content fingerprint and the address of the content distribution server from the content fingerprint address;

The communication module is specifically configured to send the content fingerprint address and the address of the terminal device to the content distribution server, or send the content fingerprint and the address of the terminal device to the content distribution server;

The communication module is specifically configured to receive the address of the content cache server sent by the content distribution server.
The device according to claim 10 or 11, characterized in that,

The communication module is specifically configured to send the content fingerprint to the content cache server indicated by the address of the content cache server;

The communication module is specifically configured to receive the data associated with the content fingerprint sent by the content cache server.
The device according to any one of claims 10-12, characterized in that,

The communication module is further configured to obtain the content fingerprint address according to the identifier of the data, where the identifier of the data is a uniform resource locator or a resource name.
The device of claim 13, wherein:

The communication module is specifically configured to acquire the content fingerprint address according to the identifier of the data after receiving the instruction to acquire the data from the user.
The apparatus according to claim 13 or 14, wherein the data is fragmented data contained in a resource indicated by a uniform resource locator or a resource name;

The communication module is specifically configured to acquire, according to the identifier of the data, content fingerprint addresses of multiple pieces of data contained in the resource.
A device for distributing data, comprising:

A communication module, configured to receive the address and content fingerprint address of the terminal device sent by the terminal device, or receive the address and content fingerprint of the terminal device sent by the terminal device, where the content fingerprint is generated according to the data to be accessed , the content fingerprint address is used to indicate the content fingerprint and the address of the content distribution server;

The module for determining the address of the content cache server is used to determine the address of the content cache server associated with the content fingerprint according to the address of the terminal device, and the content cache server indicated by the address of the content cache server stores the data and the content cache server. content fingerprint;

The communication module is further configured to send the address of the content cache server to the terminal device.
The apparatus of claim 16, wherein:

The communication module is further configured to receive the data sent by the content source;

The device also includes a generating module,

The generating module is configured to generate the content fingerprint according to the data, and generate the content fingerprint address;

The module for determining the address of a content cache server is further configured to determine at least one content cache server according to the content fingerprint address;

The communication module is further configured to send the data and the content fingerprint to the at least one content cache server.
The apparatus according to claim 17, wherein the data is fragmented data contained in a resource indicated by a uniform resource locator or a resource name; the apparatus further comprises a division module,

The dividing module is configured to divide the resource into multiple pieces of data.
A computer, characterized by comprising a memory and a processor, wherein the memory is used to store a set of computer instructions; when the processor executes the set of computer instructions, any one of the above claims 1 to 6 is executed the method described.
A computer, characterized by comprising a memory and a processor, wherein the memory is used to store a set of computer instructions; when the processor executes the set of computer instructions, any one of the above claims 7 to 9 is executed the method described.