CN106411978A - Resource caching method and apparatus - Google Patents

Abstract

An embodiment of the present invention provides a resource caching method, the method comprising: after receiving the resource returned by the resource server to the terminal device, the Internet caching device determines that the resource satisfies the first caching condition; sends a parsing request to the parsing server, and the The domain name in the URL of the resource is carried in the parsing request; receiving the server ID obtained by the parsing server according to the domain name in the URL of the resource; when the server ID obtained by the parsing is the resource server When identifying, caching the resource, the caching the resource includes caching the resource in the Internet caching device, so as to provide the terminal device accessing the resource. It is possible to prevent the Internet caching device from caching malicious resources, thereby preventing it from providing the malicious resources as source server resources to other terminal device users.

Description

A resource caching method and device

technical field

The present invention relates to the communication field, and in particular to a resource caching method and device.

Background technique

With the vigorous development of the Internet, network traffic increases rapidly, which brings great challenges to network operators. The investment in network infrastructure expansion is huge, and it is difficult to match the growth rate of user traffic. Internet caching (Web Cache) system is one of the effective ways to solve this problem. Most of the current network traffic comes from Hyper Text Transfer Protocol (Hyper Text Transfer Protocol, HTTP), mainly including video, file download, web browsing, etc. Since HTTP is based on the client/server (Client/Server, C/S) model, users When accessing resources, it is necessary to obtain the same data from the source server. The more people accessing the same resource, the greater the duplicate data traffic generated.

Based on the idea of exchanging storage for bandwidth and traffic localization, Web Cache caches popular resources locally and directly provides services to terminal device users locally, greatly reducing the traffic to the upper-level network and saving the investment of network operators, such as network infrastructure Facilities construction and inter-network settlement fees, etc., while reducing the delay in responding to terminal equipment access, improving user experience.

Transparent caching is an implementation of Web Cache. The transparent caching technology means that transparent caching uses the address of the web server to interact with the terminal device, and uses the address of the terminal device to interact with the web server, making the terminal device and the web server unaware of the caching system. Usually, the transparent cache determines the IP address of the source server according to the target Internet Protocol (Internet Protocol, IP) address in the request message for establishing a Transmission Control Protocol (TCP) connection by the terminal device. If the message is maliciously forged by the terminal device or Pointing to a malicious website may cause Web Cache to cache the malicious content locally and provide it to other terminal device users as the content of the source server. For example, after the terminal device establishes a TCP connection with the malicious website through the transparent Cause Get http://www.baidu.com/20150619qq_setup.exe to be sent to the malicious website through the transparent cache, and the malicious website returns the Trojan virus to the terminal device through the transparent cache, if the transparent cache judges http://www.baidu. If the resource indicated by com/20150619qq_setup.exe is a popular resource, the Trojan horse virus returned by the malicious website will be cached locally. When other end users obtain the real resource indicated by http://www.baidu.com/20150619qq_setup.exe , the transparent cache will return the Trojan virus to other terminal devices.

Contents of the invention

Embodiments of the present invention provide a resource caching method and device, which can prevent Internet caching devices from caching malicious resources, thereby preventing them from providing malicious resources as source server resources to other terminal device users.

In a first aspect, a resource caching method is provided, the method comprising: after receiving the resource returned by the resource server to the terminal device, the Internet caching device determines that the resource satisfies the first caching condition; the Internet caching device sends a resolution Request to the resolution server, the resolution request carries the domain name in the uniform resource locator URL of the resource; the Internet cache device receives the server identification obtained by the resolution server according to the domain name in the URL of the resource ; when the analyzed server identifier is the identifier of the resource server, the Internet caching device caches the resource, and the caching the resource includes caching the resource in the Internet caching device to Provided to terminal devices accessing the resource.

With reference to the implementation of the first aspect, in a first possible implementation of the first aspect, before receiving the resource returned by the resource server to the terminal device, the method further includes: receiving, by the Internet caching device, the A connection request sent by a terminal device to establish a connection with the resource server, the connection request carrying the identifier of the terminal device and the identifier of the resource server; the Internet caching device establishes the connection between the terminal device and the resource server server connection; the Internet caching device receives the access request to the resource sent by the terminal device, and the access request carries the domain name in the URL of the resource; the Internet caching device according to the established The terminal device is connected to the resource server, and the access request is sent to the resource server; the Internet caching device receives the resource returned by the resource server.

With reference to the first aspect and the first possible implementation of the first aspect, in the second possible implementation, when the identifier of the server obtained through parsing is not the identifier of the resource server, the Internet cache The device does not cache the resource.

With reference to the first aspect and the first to second possible implementations of the first aspect, in a third possible implementation, the Internet caching device establishing the connection between the terminal device and the resource server includes: The Internet caching device establishes a connection between the terminal device and the resource server through the identifier of the terminal device, and the identifier of the terminal device includes an Internet Protocol IP address of the terminal device.

With reference to the first aspect and the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner, the Internet caching device further sends the resource to the terminal device, and the Internet The cache device sends the resource to the terminal device by using the identifier of the resource server, where the identifier of the resource server includes the IP address of the resource server.

With reference to the first aspect and the first to fourth possible implementations of the first aspect, in a fifth possible implementation, the connection request includes a Transmission Control Protocol TCP connection request, and the resource request The access request includes a hypertext transfer protocol HTTP request, and the resolution server includes a domain name system DNS server.

With reference to the first aspect and the first to fifth possible implementations of the first aspect, in a sixth possible implementation, the determining that the resource satisfies the first cache condition includes determining that the resource satisfies resource access Popularity statistics conditions, the resource access popularity statistics include statistics on the frequency of accessing the same resource within a certain period of time.

In the second aspect, there is provided a resource caching device, including a processing module, a sending module, a receiving module, and a caching module: the processing module is configured to determine the resources returned by the resource server to the terminal device after the receiving module receives the resource The resource satisfies the first cache condition; the sending module is used to send a resolution request to the resolution server, and the resolution request carries the domain name in the uniform resource locator URL of the resource; the receiving module is used to receive the The identification of the server obtained by the parsing server according to the domain name in the URL of the resource; the caching module, configured to cache the resource when the identification of the server obtained by the analysis is the identification of the resource server, The caching of the resource includes caching the resource in the caching module to provide the resource to a terminal device that accesses the resource.

With reference to the implementation of the second aspect, in a first possible implementation of the second aspect, the receiving module is further configured to receive the resource sent by the terminal device before receiving the resources returned by the resource server to the terminal device. A connection request for establishing a connection with the resource server, where the connection request carries the identifier of the terminal device and the identifier of the resource server; the processing module is also used to establish a connection between the terminal device and the resource server connection; the receiving module is also used to receive the access request to the resource sent by the terminal device, and the access request carries the domain name in the URL of the resource; the sending module is also used to establish The connection between the terminal device and the resource server, and sending the access request to the resource server; the receiving module is also configured to receive the resource returned by the resource server.

With reference to the second aspect and the first possible implementation manner of the second aspect, in the second possible implementation manner, the cache module is further configured to: When identified, the resource in question is not cached.

With reference to the second aspect and the first to second possible implementations of the second aspect, in a third possible implementation, the processing module is further configured to establish a connection between the terminal device and the resource server The method includes: the processing module is further configured to establish a connection between the terminal device and the resource server through an identifier of the terminal device, and the identifier of the terminal device includes an Internet Protocol IP address of the terminal device.

With reference to the second aspect and the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner, the sending module is further configured to send the resource to the terminal device, the The sending module sends the resource to the terminal device through the identifier of the resource server, where the identifier of the resource server includes the IP address of the resource server.

With reference to the second aspect and the first to fourth possible implementations of the second aspect, in a fifth possible implementation, the connection request includes a Transmission Control Protocol TCP connection request, and the resource request The access request includes a hypertext transfer protocol HTTP request, and the resolution server includes a domain name system DNS server.

With reference to the second aspect and the first to fifth possible implementations of the second aspect, in a sixth possible implementation, the determining that the resource satisfies the first cache condition includes determining that the resource satisfies resource access Popularity statistics conditions, the resource access popularity statistics include statistics on the frequency of accessing the same resource within a certain period of time.

According to the technical solution provided by the embodiment of the present invention, after receiving the resource returned by the resource server to the terminal device, it is determined that the resource satisfies the first cache condition, and a parsing request is sent to the parsing server, and the parsing request carries the resource domain name, receiving the server identifier obtained by the parsing server according to the domain name of the resource, and when the resolved server identifier is the identifier of the resource server, cache the resource, and the cache The resource includes caching the resource in the Internet cache device to provide the terminal device accessing the resource, which can prevent the Internet cache device from caching malicious resources, thereby preventing it from providing malicious resources as source server resources to other terminals user.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a network architecture applied in an embodiment of the present invention;

FIG. 2 is an exemplary flowchart of a resource caching method according to an embodiment of the present invention;

FIG. 3 is an exemplary signaling diagram of a resource caching method according to an embodiment of the present invention;

FIG. 4 is an exemplary signaling diagram of a resource caching method according to another embodiment of the present invention;

Fig. 5 is a schematic diagram of the hardware structure of a general-purpose computer structure according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a resource cache device according to an embodiment of the present invention.

detailed description

In the following description, for purposes of illustration rather than limitation, specific details, such as specific system architectures, interfaces, and techniques, are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

FIG. 1 is a schematic diagram of a network architecture of a resource caching method according to an embodiment of the present invention.

The Internet caching device 102 is deployed between the terminal device 101 and the resource server 104, monitors the resource access request sent by the terminal device 101, and may store a copy of the response returned by the resource server 104 locally, and the response returned by the resource server 104 may be For example, but not limited to, at least one of hypertext markup language (Hyper Text Markup Language, HTML) web pages, pictures, videos, and file downloads. When subsequently receiving a request for accessing the same resource sent by the terminal device 101 or other terminal devices, the Internet caching device 102 uses the copy of the response stored locally to return to the user, so that there is no need to request the resource server 104 again.

The resolution server 103 can be, for example but not limited to, a domain name system (Domain NameSystem, DNS) server, which is a distributed database that maps domain names and IP addresses to each other on the Internet, and finally obtains the IP address corresponding to the host name through the host name The process is called domain name resolution, or hostname resolution. In the Request For Comments (RFC), which includes Internet standards, RFC 2181, RFC 2136, and RFC 2308 documents describe DNS.

In the network architecture of the resource caching method according to an embodiment of the present invention, the terminal device 101 sends a resource access request to the Internet caching device 102, and the Internet caching device 102 forwards the resource access request to the corresponding resource server 104, and the resource server 104 returns to the terminal The resource requested by the device 101 is sent to the Internet cache device 102 , and the Internet cache device 102 forwards the resource to the terminal device 101 . The Internet caching device 102 judges whether the resource needs to be cached, and when it is determined that the resource needs to be cached, it requests the resolution server 103 to resolve the domain name in the Uniform Resource Locator (Uniform Resource Locator, URL) of the resource to obtain the server identifier. If the obtained server identifier is the same as the identifier of the resource server 104, the resource is cached; otherwise, the resource is not cached.

In an implementation manner of the embodiment of the present invention, the Internet caching device is an independent physical device, and may also be set in another device as a functional entity, and may also have other names.

FIG. 2 is an exemplary flowchart of a resource caching method 200 according to an embodiment of the present invention. In a specific implementation process, the resource caching method 200 may be performed by, for example, but not limited to, an Internet caching device, and the Internet caching device may be, for example, but not limited to a transparent cache. A resource server is an implementation of a web server.

S202. After receiving the resource returned by the resource server to the terminal device, the Internet caching apparatus determines that the resource satisfies the first caching condition.

In an implementation manner of the embodiment of the present invention, the determining that the resource satisfies the first cache condition includes determining that the resource satisfies the resource access heat statistics condition, and the resource access heat statistics include the number of visits to the same resource within a certain period of time. Frequency statistics.

In an implementation manner of the embodiment of the present invention, before receiving the resources returned by the resource server to the terminal device:

The Internet caching device receives a connection request sent by the terminal device to establish a connection with the resource server, and the connection request carries the identifier of the terminal device and the identifier of the resource server;

The Internet caching device establishes a connection between the terminal device and the resource server;

The Internet caching device receives an access request for the resource sent by the terminal device, and the access request carries the domain name in the URL of the resource;

The Internet caching device sends the access request to the resource server according to the established connection between the terminal device and the resource server;

The Internet caching device receives the resource returned by the resource server.

In an implementation manner of the embodiment of the present invention, the above connection request may be, for example but not limited to, a Transmission Control Protocol (Transmission Control Protocol, TCP) connection request, and the resource access request may be, for example but not limited to, an HTTP request.

In an implementation manner of the embodiment of the present invention, the Internet caching device establishes a connection between the terminal device and the resource server through the identifier of the terminal device, and the Internet caching device sends the access request to the resource server through the identifier of the terminal device The server, wherein the identifier of the terminal device includes the IP address of the terminal device.

In an implementation manner of the embodiment of the present invention, the Internet caching device sends the resource returned by the resource server to the terminal device through the identifier of the resource server, and the identifier of the resource server includes the IP address of the resource server.

Specifically, the resource returned by the resource server may be, for example but not limited to, at least one of HTML web pages, pictures, videos, and file downloads.

S204, the Internet caching device sends a resolution request to the resolution server, where the resolution request carries the domain name in the URL of the resource.

S206. The Internet caching device receives an identifier of the server obtained by analyzing the resolution server according to the domain name in the URL of the resource.

In S204 and S206, in an implementation manner of the embodiment of the present invention, the resolution server includes a DNS server. The resolution request is used to request the DNS server to resolve the domain name in the URL of the resource. The result obtained by parsing indicates the IP address of the server.

S208. When the parsed server identifier is the resource server identifier, the Internet caching device caches the resource, and caching the resource includes caching the resource in the Internet caching device, to provide to terminal devices accessing the resource.

Wherein, providing to a terminal device accessing the resource includes providing to other terminal devices accessing the resource, and also includes providing to the terminal device accessing the resource again.

In an implementation manner of the embodiment of the present invention, when the identifier of the server obtained through analysis is not the identifier of the resource server, the Internet caching device does not cache the resource.

In an implementation manner of the embodiment of the present invention, when the resolved server identifier is the IP address of the resource server, the Internet caching device caches the resource locally. When the resolved server identifier is not the IP address of the resource server, the Internet caching device does not cache the resource locally.

In an implementation manner of the embodiment of the present invention, when at least the following two conditions are met, the Internet caching device caches resources locally:

1. When the statistical conditions for resource access popularity are met;

2. It is satisfied when the parsed server ID is the resource server ID.

In addition, after receiving the resource returned by the resource server to the terminal device, the Internet caching device may further determine whether to cache the resource according to the size and type of the resource.

According to the technical solution provided by the embodiment of the present invention, after receiving the resource returned by the resource server to the terminal device, after determining that the resource satisfies the first cache condition, a parsing request is sent to the parsing server, and the parsing request carries the The domain name of the resource, receiving the server identifier obtained by the parsing server according to the domain name of the resource, and when the resolved server identifier is the resource server identifier, the resource is cached, and the cached The resources include caching the resources in the Internet caching device to provide the terminal equipment accessing the resources, which can prevent the Internet caching device from caching malicious resources, thereby preventing it from providing malicious resources as source server resources to other end user.

Fig. 3 is an exemplary signaling diagram of a resource caching method according to an embodiment of the present invention. In a specific implementation process, the resource caching method 300 may be executed by, for example but not limited to, an Internet caching device. In this embodiment, the Internet caching device may be, for example, but not limited to, a transparent cache, and the resolution server may be, for example, but not limited to a DNS server. A resource server is an implementation of a web server.

S301. The terminal device sends a TCP connection establishment request to the resource server to the transparent cache, which carries the IP address of the terminal device and the IP address of the resource server.

S302. The transparent cache uses the IP address of the terminal device to establish a TCP connection to the resource server.

S303. The transparent cache receives an HTTP access request from the terminal device to the resource server.

S304. The transparent cache uses the IP address of the terminal device to send the HTTP access request to the resource server.

S305. The resource server returns the resource requested by the terminal device to the transparent cache.

S306. The transparent cache uses the IP address of the resource server to return the resource returned by the resource server to the terminal device.

S307. The transparent cache determines that the resource needs to be cached according to the resource access heat statistics.

S308. The transparent cache request resolution server performs domain name resolution on the domain name in the URL of the resource in the access request. The transparent cache sends a DNS resolution request to the DNS server, which carries the domain name in the URL of the resource, and requests the DNS server to resolve the domain name in the URL.

S309, the DNS server performs DNS resolution on the domain name in the URL of the resource, and obtains a resolution result indicating the IP address of the server.

S310. The DNS server sends the resolution result to the transparent cache.

S311. The transparent cache verifies the IP address of the server. Transparent caching judges whether the IP address of the server is the IP address of the resource server, and if so, caches the resource locally, otherwise, does not cache the resource.

According to the technical solution provided by the embodiment of the present invention, after receiving the resource returned by the resource server to the terminal device, it is determined that the resource satisfies the first cache condition, and then a parsing request is sent to the parsing server, and the parsing request carries the The domain name of the resource, receiving the server identifier obtained by the parsing server according to the domain name of the resource, when the server identifier obtained by the analysis is the identifier of the resource server, cache the resource, and the cache The resource includes caching the resource in the Internet cache device to provide the terminal device accessing the resource, which can prevent the Internet cache device from caching malicious resources, thereby preventing it from providing malicious resources as source server resources to other end users.

Fig. 4 is an exemplary signaling diagram of a resource caching method according to another embodiment of the present invention. In a specific implementation process, the resource caching method 400 may be executed by, for example but not limited to, an Internet caching device. In this embodiment, the Internet caching device may be, for example, but not limited to, a transparent cache, and the resolution server may be, for example, but not limited to a DNS server. A resource server is an implementation of a web server.

S401. The terminal device sends a TCP connection establishment request to the first resource server to the transparent cache, where the IP address of the terminal device and the IP address of the first resource server are carried.

S402. The transparent cache uses the IP address of the terminal device to establish a TCP connection to the first resource server.

S403. The transparent cache receives an HTTP access request sent by the terminal device to the first resource server.

S404. For each received access request, the transparent cache requests the resolution server to perform domain name resolution on the domain name in the URL of the resource in the access request. The transparent cache sends a DNS resolution request to the DNS server, which carries the domain name in the URL of the resource to be accessed by the HTTP access request, and requests the DNS server to resolve the domain name in the URL.

S405. The DNS server performs DNS resolution on the domain name in the URL of the resource, and obtains a resolution result indicating the IP address of the server.

S406. The DNS server sends the resolution result to the transparent cache.

S407. The transparent cache verifies the IP address of the server. Transparent cache determines whether the IP address of the server indicated by the analysis result is the IP address of the first resource server, and when the IP address of the server is the IP address of the first resource server, execute S408 to S410; when the IP address of the server is the second When the IP address of the resource server is set, execute S411 to S413.

S408. The transparent cache uses the IP address of the terminal device to send the HTTP access request to the first resource server.

S409. The first resource server returns the resource requested by the terminal device to the transparent cache.

S410. The transparent cache uses the IP address of the first resource server to return the resource returned by the first resource server to the terminal device.

S411. The transparent cache disconnects the TCP connection to the first resource server.

S412. The transparent cache uses the IP address of the terminal device to establish a TCP connection to the second resource server.

S413. The transparent cache uses the IP address of the terminal device to send the HTTP access request to the second resource server.

Thereafter, the transparent cache uses the IP address of the first resource server to return the resource returned by the second resource server to the terminal device.

In an implementation manner of the embodiment of the present invention, after the transparent cache returns the resource to the terminal device, it determines whether the resource needs to be cached, and if necessary, caches the resource locally; otherwise, does not cache the resource.

In another implementation manner of the embodiment of the present invention, before returning the resource to the terminal device, the transparent cache determines whether the resource needs to be cached, and if necessary, caches the resource locally; otherwise, does not cache the resource.

According to the technical solution provided by the embodiment of the present invention, before sending the resource returned by the resource server to the terminal device, a resolution request is sent to the resolution server, the resolution request carries the domain name in the URL of the resource, and the basis returned by the resolution server is received. The domain name in the URL of the resource is parsed to obtain the server ID. When the parsed server ID is the ID of the first resource server, the resource is cached. When the parsed server ID is the ID of the second resource server , disconnect the connection with the first resource server, establish a connection with the second resource server, and send the resource returned by the second resource server to the terminal device, which can prevent the Internet caching device from caching malicious resources, thereby preventing it from treating malicious resources as Origin server resources are made available to other end users.

It is worth noting that although the technical solutions provided by the embodiment in FIG. 2 , the embodiment in FIG. 3 , and the embodiment in FIG. 4 of the present invention can prevent the Internet caching device from caching malicious resources, it can prevent it from providing malicious resources as source server resources to For other terminal users, but the technical solution provided by the embodiment of Figure 4, when the analysis result is not the first resource server, the Internet caching device needs to re-establish the connection with the second resource server, and this process greatly increases the waiting time of the terminal device user time. Moreover, in the technical solution provided by the embodiment in Fig. 4, the Internet caching device will request the resolution server to perform domain name resolution and server identification verification for each resource access request received, thus increasing the processing load of the resolution server and response delay.

Compared with the technical solution provided by the embodiment in FIG. 4, the technical solution provided by the embodiment in FIG. 2 and the embodiment in FIG. 3 of the present invention reduces the number of times the resolution server performs domain name resolution and the number of server identification checks, and reduces the The system overhead of the Internet caching device avoids the process of re-establishing the connection after the analysis result is not the target resource server, thereby avoiding the response delay to the terminal equipment request introduced thereby.

In addition, for the embodiment in FIG. 2, in an implementation manner of the embodiment of the present invention, in S202, after receiving the resource returned by the resource server to the terminal device, the Internet caching device sends the resource to the terminal device, and then determines After the resource satisfies the first cache condition, S204 to S208 are executed. This implementation manner can minimize the response delay to the terminal device request, and minimize the waiting time of the terminal device user.

Regarding the embodiment in FIG. 2 , in another implementation manner of the embodiment of the present invention, the Internet caching device may send the resource to the terminal device after executing S202 to S208 . Although compared with the previous implementation, this implementation has an increased response delay to terminal device requests, but compared to the technical solution provided by the embodiment in Figure 4, it only needs to satisfy the first cache condition domain name resolution of the resource, and also avoid the process of re-establishing the connection after the resolution result is not the target resource server. Therefore, compared with the technical solution provided by the embodiment in Fig. The number of identification checks reduces the system overhead of the Internet caching device, and also reduces the response delay to the terminal equipment request.

FIG. 5 is a schematic diagram of a hardware structure of a general computer structure 500 according to an embodiment of the present invention. As shown in FIG. 5 , general purpose computer architecture 500 includes processor 502 , memory 504 , communication interface 506 and bus 508 . Wherein, the processor 502 , the memory 504 and the communication interface 506 are connected to each other through the bus 508 .

The processor 502 may adopt a general-purpose central processing unit (Central Processing Unit, CPU), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits for executing related programs, so as to realize The technical solutions provided by the embodiments of the present invention.

The memory 504 may be a read only memory (Read Only Memory, ROM), a static storage device, a dynamic storage device or a random access memory (Random Access Memory, RAM). The memory 504 can store an operating system 5041 and other application programs 5042 . When implementing the technical solutions provided by the embodiments of the present invention through software or firmware, the program codes for realizing the technical solutions provided by the embodiments of the present invention are stored in the memory 504 and executed by the processor 502 .

The communication interface 506 uses a transceiver device such as but not limited to a transceiver to realize communication with other devices or a communication network.

Bus 508 may comprise a path for carrying information between various components (eg, processor 502, memory 504, input and communication interface 506).

As shown in FIG. 6 , when the data processing device includes the above general computer structure 500 , the general computer structure 500 further includes a processing module 602 for resource caching, a sending module 604 , a receiving module 606 and a cache module 608 . These modules can be implemented using hardware, software, or software combined with hardware. As software modules, stored in the memory 504 of the general-purpose computer architecture 500, they can be used together as an independent program, or separately as independent programs. As an optional implementation manner, these software modules may also be used as a part of the application program 5042 or as a part of the operating system 5041 separately or together.

The processing module 602 is configured to, after the receiving module receives the resource returned by the resource server to the terminal device, determine that the resource satisfies the first caching condition.

The sending module 604 is configured to send a resolution request to the resolution server, where the resolution request carries the domain name in the URL of the resource.

The receiving module 606 is configured to receive the server identifier obtained by the parsing server according to the domain name in the URL of the resource.

A caching module 608, configured to cache the resource when the parsed server ID is the resource server ID, and the caching the resource includes caching the resource in the caching module to provide to terminal devices accessing said resources.

Wherein, the resource server is an implementation manner of the Web server.

In an implementation manner of the embodiment of the present invention, the receiving module 606 is further configured to receive, before receiving the resources returned by the resource server to the terminal device, an instruction to establish a connection with the resource server sent by the terminal device. A connection request, where the connection request carries the identifier of the terminal device and the identifier of the resource server;

The processing module 602 is further configured to establish a connection between the terminal device and the resource server;

The receiving module 606 is further configured to receive an access request for the resource sent by the terminal device, where the access request carries the domain name in the URL of the resource;

The sending module 604 is further configured to send the access request to the resource server according to the established connection between the terminal device and the resource server;

The receiving module 606 is also configured to receive the resource returned by the resource server.

In an implementation manner of the embodiment of the present invention, the caching module 608 is further configured not to cache the resource when the parsed server identifier is not the resource server identifier.

In an implementation manner of the embodiment of the present invention, the processing module 602 is further configured to establish a connection between the terminal device and the resource server includes: the processing module 602 is also configured to establish For the connection between the terminal device and the resource server, the identifier of the terminal device includes the Internet Protocol IP address of the terminal device.

In an implementation manner of the embodiment of the present invention, the sending module 604 is further configured to send the resource to the terminal device, and the sending module 604 sends the resource to the terminal through the identifier of the resource server device, where the identifier of the resource server includes the IP address of the resource server.

According to the technical solution provided by the embodiment of the present invention, after receiving the resource returned by the resource server to the terminal device, it is determined that the resource satisfies the first cache condition, and a parsing request is sent to the parsing server, and the parsing request carries the resource The domain name in the URL of the URL, receiving the server identifier obtained by the parsing server according to the domain name in the URL of the resource, and when the resolved server identifier is the identifier of the resource server, cache the resource , the caching of the resource includes caching the resource in the Internet caching device to provide the terminal device accessing the resource, which can prevent the Internet caching device from caching malicious resources, thereby preventing it from using the malicious resource as a source Server resources are made available to other end users.

It should be noted that although the general-purpose computer architecture 500 shown in FIG. 5 only shows the processor 502, memory 504, communication interface 506, and bus 508, those skilled in the art should understand that the above-mentioned resource cache device Also contains other devices necessary for proper operation. At the same time, according to specific needs, those skilled in the art should understand that the above-mentioned resource cache device may also include hardware devices for implementing other additional functions. In addition, those skilled in the art should understand that the above-mentioned resource caching device may only include devices necessary to realize the embodiment of the present invention, and does not necessarily include all the devices shown in FIG. 5 .

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (14)

1. A resource caching method, characterized in that, comprising the following steps: After receiving the resource returned by the resource server to the terminal device, the Internet caching device determines that the resource satisfies the first caching condition; The Internet caching device sends a resolution request to the resolution server, and the resolution request carries the domain name in the uniform resource locator URL of the resource; The Internet caching device receives the identification of the server obtained by the analysis server according to the domain name in the URL of the resource; When the parsed server identifier is the resource server identifier, the Internet caching device caches the resource, and the caching the resource includes caching the resource in the Internet caching device to provide to terminal devices accessing said resources. 2. The method according to claim 1, characterized in that, before receiving the resources returned by the resource server to the terminal device, the method further comprises: The Internet caching device receives a connection request sent by the terminal device to establish a connection with the resource server, and the connection request carries the identifier of the terminal device and the identifier of the resource server; The Internet caching device establishes a connection between the terminal device and the resource server; The Internet caching device receives an access request for the resource sent by the terminal device, and the access request carries the domain name in the URL of the resource; The Internet caching device sends the access request to the resource server according to the established connection between the terminal device and the resource server; The Internet caching device receives the resource returned by the resource server. 3. The method according to claim 1 or 2, wherein when the server identifier obtained through the analysis is not the resource server identifier, the Internet caching device does not cache the resource. 4. The method of claim 2 or 3, wherein, The establishment of the connection between the terminal device and the resource server by the Internet cache device includes: establishing the connection between the terminal device and the resource server by the Internet cache device through the identifier of the terminal device, and the identifier of the terminal device Including the Internet Protocol IP address of the terminal device. 5. The method according to any one of claims 1 to 4, wherein the Internet caching device also sends the resource to the terminal device, and the Internet caching device sends the resource server through the identifier of the resource server The resource is provided to the terminal device, and the identifier of the resource server includes the IP address of the resource server. 6. The method according to any one of claims 2 to 5, wherein the connection request comprises a Transmission Control Protocol TCP connection request, and the access request to the resource comprises a Hypertext Transfer Protocol HTTP request, so The resolution server includes a Domain Name System (DNS) server. 7. The method according to any one of claims 1 to 6, wherein the determining that the resource satisfies the first cache condition comprises determining that the resource satisfies the resource access heat statistics condition, and the resource access heat statistics include Statistics on the frequency of accessing the same resource within a certain period of time. 8. A resource caching device, characterized in that it includes a processing module, a sending module, a receiving module and a caching module: The processing module is configured to, after the receiving module receives the resource returned by the resource server to the terminal device, determine that the resource satisfies the first cache condition; The sending module is configured to send a parsing request to a parsing server, and the parsing request carries the domain name in the Uniform Resource Locator URL of the resource; The receiving module is configured to receive the server identifier obtained by the parsing server according to the domain name in the URL of the resource; The caching module is configured to cache the resource when the parsed server ID is the resource server ID, and the caching the resource includes caching the resource in the caching module to Provided to terminal devices accessing the resource. 9. The apparatus according to claim 8, wherein the receiving module is further configured to receive the establishment and resource server information sent by the terminal device before the resource server returns the resource to the terminal device. A connection request for a connection, where the connection request carries the identifier of the terminal device and the identifier of the resource server; The processing module is further configured to establish a connection between the terminal device and the resource server; The receiving module is further configured to receive an access request to the resource sent by the terminal device, where the access request carries the domain name in the URL of the resource; The sending module is further configured to send the access request to the resource server according to the established connection between the terminal device and the resource server; The receiving module is further configured to receive the resource returned by the resource server. 10. The device according to claim 8 or 9, wherein the cache module is further configured to not cache the resource when the parsed server identifier is not the resource server identifier. 11. Apparatus as claimed in claim 9 or 10, characterized in that, The processing module is further configured to establish the connection between the terminal device and the resource server includes: the processing module is further configured to establish the connection between the terminal device and the resource server through the identifier of the terminal device, the The identifier of the terminal device includes the Internet Protocol IP address of the terminal device. 12. The device according to any one of claims 8 to 11, wherein the sending module is further configured to send the resource to the terminal device, and the sending module sends the resource server through the identifier of the resource server The resource is provided to the terminal device, and the identifier of the resource server includes the IP address of the resource server. 13. The device according to any one of claims 9 to 12, wherein the connection request comprises a Transmission Control Protocol TCP connection request, and the access request to the resource comprises a Hypertext Transfer Protocol HTTP request, so The resolution server includes a Domain Name System (DNS) server. 14. The device according to any one of claims 8 to 13, wherein the determining that the resource satisfies the first cache condition comprises determining that the resource satisfies the resource access heat statistics condition, and the resource access heat statistics include Statistics on the frequency of accessing the same resource within a certain period of time.