CN106686033A - A method, device and system for caching and serving content - Google Patents

Abstract

The invention discloses a method, a device and a system for a cache and a service content. The method comprises steps: a request routing (RR) device hijacks an access request of user equipment; the RR device acquires an identifier corresponding to a URL (Uniform Resource Locator) in the access request, and when the acquired identifier can not be found out in a pre-stored identifier, a pre-cache message is sent to a content load balancing device; the content load balancing device acquires the identifier corresponding to the URL in the pre-cache message, and the pre-cache message is sent to a cache device corresponding to the acquired identifier; the cache device acquires the identifier corresponding to the URL in the pre-cache message, a path corresponding to the identifier is calculated, the content corresponding to the URL downloaded from a server is cached to the path obtained through calculation, and a cache success message is sent to the RR device; and the RR device saves the acquired identifier. Through the scheme of the invention, the identifier corresponding to the URL serves as a unique identifier of the content, the same content corresponding to different URLs only needs to be cached for one time, the storage space utilization rate is improved, and the bandwidth use rate is improved.

Description

A method, device and system for caching and serving content

technical field

The invention relates to the field of the Internet, in particular to a method, device and system for caching and serving content.

Background technique

With the rapid development of the Internet, various Internet applications continue to emerge, which consume more and more broadband resources. The traditional method of obtaining network content is the client-server model, and all user access requests are sent to the server for processing. , resulting in network congestion and server overload, resulting in a large user access delay.

In order to improve user experience, caching systems are becoming more and more popular with operators. FIG. 1 is a schematic diagram of a user acquiring network content. As shown in Figure 1, users send access requests to servers through access networks and routers to obtain network content, and the cache system is deployed in the existing Internet Protocol (IP, Internet Protocol) bearer network to store hot or specific content on the Internet , by guiding the user's access request to be forwarded to the cache system, the cache system provides the user with the required Internet data, avoiding downloading data directly from the server of the Internet source site, thereby effectively avoiding the congestion problem of the network link and reducing user access The delay of Internet content improves the user's data service experience, and can also reduce the settlement fee generated by the traffic between the Internet.

The cache system supports the acceleration of Internet services based on Hypertext Transfer Protocol (HTTP, Hypertext Transfer Protocol) such as Web (World Wide Web) browsing, file download, and video playback. There are no specific requirements, and all kinds of Internet audio, video, image, text and other files can be cached and accelerated through the cache system.

The caching system supports different network access methods such as mobile cellular networks (such as 2G, 3G or Long Term Evolution (LTE, Long Term Evolution)), wireless local area networks (WLAN, Wireless Local Area Networks), fixed broadband, etc. PC, PersonalComputer), mobile terminals and other different forms of terminals to provide services.

Existing methods for caching and serving content roughly include:

The request routing (RR, Request Routing) device hijacks the access request of the user equipment; wherein, the access request includes a Uniform Resource Locator (URL, Uniform Resource Locator); the RR device forwards the access request to the content load balancing device, and the content load balancing device uses a hash The Greek algorithm calculates the hash value of the URL in the access request, and forwards the access request to the cache device corresponding to the calculated hash value; the cache device uses the fifth version of the message digest algorithm (MD5, Message Digest Algorithm 5) to calculate the URL corresponding to the URL path, and download the content corresponding to the URL from the server, save the downloaded content to the calculated path, and send the downloaded content to the user device.

In the existing method of caching content, the URL is used as the unique identifier of the content to cache the content. Since the URL of the same content will be different due to the difference of some parameters, the same content will be saved in the cache system many times, which is a waste of time. Storage space is saved, and bandwidth usage is reduced due to the need to download content from the server multiple times. For example, http://222.132.5.19/edge.v.iask.com/138364612.hlv? KID＝sina,viask&Expires＝14 35766400&ssig＝sjhlPQskgr&sid＝138364612_1435653150890_1751_68896&ws hc_tag＝1&wsts_tag＝55925414&wsid_tag＝d233c309&wsiphost＝ipdbm和 http://218.58.222.57/edge.v.iask.com/138364612.hlv？ KID＝sina,viask&Expires＝1 435766400&ssig＝sjhlPQskgr&sid＝138364612_1435653263781_643_35962&ws hc_tag＝1&wsts_tag＝55925485&wsid_tag＝d233c309&wsiphost＝ipdbm ；其中，222.132.5.19和218.58.222.57为客户端的IP地址，edge.v.iask.com为访问的网站名称， 138364612.hlv is the name of the accessed content, ? The latter is the parameters of the URL. These two URLs represent the same content, but the URLs are different due to different parameters, which will cause the content to be saved twice, wasting storage space and reducing the bandwidth rate.

Contents of the invention

In order to solve the above problems, the present invention proposes a method, device and system for caching and serving content, which can improve the utilization rate of storage space and increase the utilization rate of bandwidth.

In order to achieve the above purpose, the present invention proposes a method for caching and serving content, including:

requesting a routing RR device to hijack the access request of the user equipment;

The RR device acquires the identifier corresponding to the URL of the resource locator in the access request, and the obtained identifier cannot be found in the pre-saved identifiers, and sends a pre-cache message to the content load balancing device;

The content load balancing device obtains the identifier corresponding to the URL in the pre-cached message, and sends the pre-cached message to the cache device corresponding to the obtained identifier;

The caching device obtains the identifier corresponding to the URL in the pre-cached message, calculates the path corresponding to the identifier, caches the content corresponding to the URL downloaded from the server to the calculated path, and sends a cache success message to the RR device;

The RR device saves the obtained identity.

Preferably, the method also includes:

The RR device determines that the number of times the content corresponding to the URL is accessed is greater than or equal to a first preset threshold.

Preferably, the RR device obtaining the identifier corresponding to the URL in the access request includes:

The RR device searches for the identifier corresponding to the regular expression matching the URL in the access request in the preset correspondence between the regular expression and the identifier.

Preferably, the content load balancing device obtaining the identifier corresponding to the URL in the pre-cache message includes:

The content load balancing device searches for the identifier corresponding to the regular expression matching the URL in the pre-cached message in the preset correspondence between regular expressions and identifiers.

Preferably, the cache device obtaining the identifier corresponding to the URL in the pre-cache message includes:

The caching device searches for the identifier corresponding to the regular expression matching the URL in the pre-cached message in the preset correspondence between the regular expression and the identifier.

Preferably, when the caching device judges that the cached content exceeds the validity period; or, when judging that the total size of the cache or the number of caches is greater than or equal to a second preset threshold, the method further includes:

The caching device deletes the cached content that has expired, or deletes the cached content that has been accessed the least number of times.

Preferably, when the RR device finds the obtained identifier in the pre-saved identifiers, the method further includes:

The RR apparatus sends an identifier indicating redirection to the user equipment;

The content load balancing device receives an access request from the user equipment, acquires an identifier corresponding to the URL in the access request, and sends an identifier indicating redirection to the user equipment;

The cache device corresponding to the obtained identifier receives the access request from the user equipment, obtains the identifier corresponding to the URL in the access request, calculates a path corresponding to the identifier, and sends the content in the path to the user equipment.

The present invention also proposes a request routing RR device, which at least includes:

A hijacking module, used to hijack the access request of the user equipment;

The first sending module is used to obtain the identifier corresponding to the URL of the resource locator in the access request, and the obtained identifier cannot be found in the pre-saved identifiers, and sends a pre-cache message to the content load balancing device;

The first receiving module is configured to receive a cache success message from the cache device corresponding to the identifier corresponding to the URL in the access request, and store the obtained identifier.

Preferably, the hijacking module is specifically used for:

It is determined that the number of times the content corresponding to the URL is accessed is greater than or equal to the first preset threshold, and the access request of the user equipment is hijacked.

Preferably, the first sending module is specifically used for:

In the preset correspondence between the regular expression and the identifier, search for the identifier corresponding to the regular expression that matches the URL in the access request, if the obtained identifier cannot be found in the pre-saved identifiers, and submit to the content The load balancing device sends the pre-cached message.

Preferably, the first sending module is also used for:

The obtained identifier is found in the pre-stored identifiers, and the redirected identifier is sent to the user equipment.

The present invention also proposes a content load balancing device, which at least includes:

The second receiving module is configured to receive the pre-cached message from the request routing RR device;

The second sending module is configured to obtain the identifier corresponding to the URL in the pre-cached message, and send the pre-cached message to the cache device corresponding to the obtained identifier.

Preferably, the second sending module is specifically used for:

In the preset correspondence between the regular expression and the identifier, search for the identifier corresponding to the regular expression matching the URL in the pre-cached message, and send the pre-cached message to the cache device corresponding to the obtained identifier.

Preferably, the second receiving module is also used for:

Receive an access request from a user device;

The second sending module is also used for:

Acquiring an identifier corresponding to the URL in the access request, and sending an identifier indicating redirection to the user equipment.

The present invention also proposes a cache device, including at least:

A third receiving module, configured to receive the pre-cached message from the content load balancing device;

The third sending module is used to obtain the identifier corresponding to the URL in the pre-cached message, calculate the path corresponding to the identifier, cache the content corresponding to the URL downloaded from the server to the calculated path, and send a cache success message to the RR device .

Preferably, the third sending module is specifically used for:

In the correspondence between the preset regular expression and the identifier, search for the identifier corresponding to the regular expression matching the URL in the pre-cache message, calculate the path corresponding to the identifier, and correspond to the URL downloaded from the server The contents of the cache are cached on the calculated path, and a cache success message is sent to the RR device.

Preferably, it also includes:

The deletion module is used to determine that the cached content has exceeded the validity period; or, if it is determined that the total size of the cache or the number of caches is greater than or equal to the second preset threshold, delete the cached content that exceeds the validity period, or delete the minimum number of accesses cached content.

Preferably, the third receiving module is also used for:

Receive an access request from a user device;

The third sending module is also used for:

Obtain the identifier corresponding to the URL in the access request, calculate the path corresponding to the identifier, and send the content in the path to the user equipment.

The present invention also proposes a system for caching and serving content, which at least includes:

The request routing RR device is used to hijack the access request of the user equipment; obtain the identifier corresponding to the resource locator URL in the access request, find the obtained identifier in the pre-saved identifier, and send a pre-cache message to the content load balancing device; Receive the cache success message from the cache device, and save the obtained identifier;

A content load balancing device, configured to obtain an identifier corresponding to the URL in the pre-cached message, and send the pre-cached message to the cache device corresponding to the obtained identifier;

The caching device is configured to obtain the identifier corresponding to the URL in the pre-cached message, calculate the path corresponding to the identifier, cache the content corresponding to the URL downloaded from the server to the calculated path, and send a cache success message to the RR device.

Preferably, the RR device is also used for:

Find the obtained identifier in the pre-saved identifiers, and send the redirection identifier to the user equipment;

The content load balancing device is also used for:

receiving an access request from the user equipment, acquiring an identifier corresponding to the URL in the access request, and sending an identifier indicating redirection to the user equipment;

The cache device is also used to:

Receive the access request from the user equipment, acquire the identifier corresponding to the URL in the access request, calculate the path corresponding to the identifier, and send the content in the path to the user equipment.

Compared with the prior art, the technical solution of the present invention includes: the request routing RR device hijacks the access request of the user equipment; the RR device acquires the identifier corresponding to the URL of the resource locator in the access request, and the obtained identifier cannot be found in the pre-saved identifier. ID, send a pre-cache message to the content load balancing device; the content load balancing device obtains the ID corresponding to the URL in the pre-cache message, and sends the pre-cache message to the cache device corresponding to the obtained ID; the cache device obtains the URL in the pre-cache message The identifier corresponding to the URL calculates the path corresponding to the identifier, caches the content corresponding to the URL downloaded from the server to the calculated path, and sends a cache success message to the RR device; the RR device saves the obtained identifier. Through the solution of the present invention, the identification corresponding to the URL is used as the unique identification of the content, so that the same content corresponding to different URLs only needs to be cached once, thereby improving the utilization rate of storage space and the utilization rate of bandwidth.

Description of drawings

The accompanying drawings in the embodiments of the present invention are described below. The accompanying drawings in the embodiments are used for further understanding of the present invention and are used together with the description to explain the present invention, and do not constitute a limitation to the protection scope of the present invention.

FIG. 1 is a schematic diagram of an existing user acquiring network content;

FIG. 2 is a flow chart of the method for caching and serving content in the present invention;

3 is a schematic diagram of the structural composition of the RR device of the present invention;

4 is a schematic diagram of the structural composition of the content load balancing device of the present invention;

FIG. 5 is a schematic diagram of the structural composition of the cache device of the present invention;

FIG. 6 is a schematic diagram of the structural composition of the system for caching and serving content according to the present invention.

detailed description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings, which cannot be used to limit the protection scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and various manners in the embodiments can be combined with each other.

Referring to Fig. 2, the present invention proposes a method for caching content, including:

Step 200, the RR device hijacks the access request of the user equipment.

In this step, the URL is included in the access request.

In this step, the hijacking of the access request of the user equipment by the RR device means that the access request of the user equipment is no longer sent to the server, but is sent to the content load balancing device.

In this step, how the RR device hijacks the access request of the user equipment belongs to the well-known technology of those skilled in the art, and is not used to limit the protection scope of the present invention, and will not be repeated here.

In step 201, the RR device obtains the identifier corresponding to the URL in the access request, and sends a pre-cache message to the content load balancing device if the obtained identifier cannot be found in the pre-stored identifiers.

In this step, the RR device also forwards the access request from the user equipment to the server, and the server provides services for the user equipment.

In this step, the identifier corresponding to the URL in the access request acquired by the RR device includes:

The RR device searches for the identifier corresponding to the regular expression matching the URL in the access request in the preset correspondence between regular expressions and identifiers.

Wherein, how the RR device judges whether the URL in the access request matches the regular expression in the corresponding relationship belongs to the well-known technology of those skilled in the art, and is not used to limit the scope of protection of the present invention, and will not be repeated here. The present invention emphasizes that the identification corresponding to the regular expression matching the URL is used as the unique identification of the content corresponding to the URL, so that the same content corresponding to different URLs only needs to be cached once, thereby improving the utilization rate of storage space and improving the storage capacity. Bandwidth usage.

For example, when the URL is http://222.73.61.214/youku/6573718061135810187D003A7D/0300080500545A25632B57092B13A2E773DF5A-0614-5810-DC51-EB36488C7C74.mp4 ? nk＝671 47729540_23587507484&ns＝6490028_2707360&special＝true , the regular expression is http://%d+%.%d+%.%d+%.%d+/youku/%x+/(%x+-%x+-%x+-%x+- %x+%.%w+ )%? When nk=%d+_%d+&ns=(%d+_%d+)& .+, the URL matches the regular expression.

Among them, %d represents a number, %. represents any character, %x represents a hexadecimal number, %w represents a letter or a number, + represents multiple, &ns is a URL parameter.

Wherein, the regular expression can be summarized by checking the URL of each content.

Among them, there is a one-to-one correspondence between the regular expression and the logo. The logo corresponding to the above regular expression is http://www.youku.com/%1/%2 , %1, %2 represent the brackets in the regular expression .

Then the identifier corresponding to the above URL is http://www.youku.com/0300080500545A25632B57092B13A2E773DF5A-0614-5810-DC51-EB36488C7C74.mp4/6490028_2707360 .

In this step, when the RR device finds the obtained identifier in the pre-saved identifiers, the RR device sends the redirected identifier to the user equipment; the content load balancing device receives the access request from the user equipment, and obtains the The identifier corresponding to the URL sends an identifier indicating redirection to the user equipment; the cache device corresponding to the obtained identifier receives the access request from the user equipment, obtains the identifier corresponding to the URL in the access request, calculates the path corresponding to the identifier, and converts the path content is sent to the user device.

Wherein, the RR device also sends the address of the content load balancing device to the user equipment, and the user equipment sends an access request to the content load balancing device according to the address of the content load balancing device.

Wherein, the content load balancing apparatus further sends the obtained address of the cache device corresponding to the identifier to the user equipment, and the user equipment sends an access request to the obtained cache device corresponding to the obtained identifier according to the obtained address of the cache device corresponding to the identifier.

Wherein, the cache device corresponding to the obtained identifier refers to the cache device corresponding to the hash value corresponding to the obtained identifier.

Wherein, the cache device corresponding to the obtained identifier can use MD5 to calculate the path corresponding to the identifier, and the specific implementation belongs to the known technology of those skilled in the art, and is not intended to limit the scope of protection of the present invention, and will not be repeated here. The invention emphasizes that the identifier is used as the unique identifier of the content to cache the content, thereby improving the utilization rate of the storage space and increasing the rate of the bandwidth.

In this step, the pre-caching message includes the URL, and may also include the address of the RR device.

In step 202, the content load balancing device obtains the identifier corresponding to the URL in the pre-caching message, and sends the pre-caching message to the cache device corresponding to the obtained identifier.

In this step, the identification corresponding to the URL in the pre-cache message acquired by the content load balancing device includes:

The content load balancing device searches for the identifier corresponding to the regular expression matching the URL in the pre-cached message in the preset correspondence between the regular expression and the identifier.

Wherein, how the content load balancing device judges whether the URL in the pre-cached message matches the regular expression in the corresponding relationship belongs to the well-known technology of those skilled in the art, and is not used to limit the scope of protection of the present invention, and will not be repeated here. The present invention emphasizes that the identification corresponding to the regular expression matched with the URL is used as the unique identification of the content corresponding to the URL, so that the same content corresponding to different URLs only needs to be cached once, thereby improving the utilization rate of storage space and improving the storage capacity. Bandwidth usage.

In this step, sending the pre-cached message to the cache device corresponding to the obtained identifier includes:

The hash value corresponding to the identifier obtained by calculating the hash algorithm is used, and the pre-cached message is sent to the cache device corresponding to the calculated hash value.

Step 203: The caching device acquires the identifier corresponding to the URL in the pre-cached message, calculates the path corresponding to the identifier, caches the content corresponding to the URL downloaded from the server to the calculated path, and sends a cache success message to the RR device.

In this step, the identifier corresponding to the URL in the pre-cached message acquired by the cache device includes:

The cache device searches for the identifier corresponding to the regular expression matching the URL in the pre-cached message in the preset correspondence between the regular expression and the identifier.

Wherein, how the cache device judges whether the URL in the pre-cached message matches the regular expression in the corresponding relationship belongs to the well-known technology of those skilled in the art, and is not used to limit the scope of protection of the present invention, and will not be repeated here. The present invention emphasizes that the identification corresponding to the regular expression matched with the URL is used as the unique identification of the content corresponding to the URL, so that the same content corresponding to different URLs only needs to be cached once, thereby improving the utilization rate of storage space and improving the storage capacity. Bandwidth usage.

In this step, MD5 can be used to calculate and identify the corresponding path, and the specific implementation belongs to the known technology of those skilled in the art, and is not used to limit the protection scope of the present invention, and will not be repeated here.

In this step, how to download the content corresponding to the URL from the server belongs to the well-known technology of those skilled in the art, and is not used to limit the protection scope of the present invention, and will not be repeated here.

In this step, the caching device sends a cache success message to the RR device according to the address of the RR device in the pre-caching message.

Step 204, the RR device saves the obtained identifier.

Further, the method also includes:

The RR device determines that the number of times the content corresponding to the URL is accessed is greater than or equal to a first preset threshold.

Specifically, the RR device obtains the access request sent by the user equipment, obtains the identifier corresponding to the URL in the access request, and determines that the number of times the obtained identifier is accessed is greater than or equal to the first preset threshold.

Wherein, when the RR device determines that the number of times the content corresponding to the URL is accessed is less than a first preset threshold, the RR device sends the access request to the server.

That is to say, each access request sent by the user equipment will be obtained by the RR device, and the access request will be hijacked by the RR device only when the number of times the content corresponding to the URL in the access request is accessed is greater than or equal to the first preset threshold , the system of the present invention serves the user equipment; when the number of visits to the content corresponding to the URL in the access request is less than the first preset threshold, the RR device sends the access request to the server, and the server serves the user equipment.

Further, when the cache device determines that the cached content exceeds the validity period; or, when it determines that the total size of the cache or the number of caches is greater than or equal to the second preset threshold, the cache device deletes the cached content that exceeds the validity period, or deletes the cached content The least accessed cached content.

Referring to Fig. 3, the present invention also proposes a request routing RR device, at least including:

A hijacking module, used to hijack the access request of the user equipment;

The first sending module is used to obtain the identifier corresponding to the URL of the resource locator in the access request, and the obtained identifier cannot be found in the pre-saved identifiers, and sends a pre-cache message to the content load balancing device;

The first receiving module is configured to receive a cache success message from the cache device corresponding to the identifier corresponding to the URL in the access request, and store the obtained identifier.

In the RR device of the present invention, the hijacking module is specifically used for:

It is determined that the number of times the content corresponding to the URL is accessed is greater than or equal to the first preset threshold, and the access request of the user equipment is hijacked.

In the RR device of the present invention, the first sending module is specifically used for:

In the preset correspondence between the regular expression and the logo, search for the logo corresponding to the regular expression that matches the URL in the access request, if the obtained logo cannot be found in the pre-saved logo, load balancing to the content The device sends a pre-cached message.

In the RR device of the present invention, the first sending module is also used for:

If it is determined that the cached content has expired, or it is determined that the number of times the cached content has been accessed is less than or equal to a preset number of times, a message indicating deletion of the cached content is sent to the content load balancing device.

In the RR device of the present invention, the first sending module is also used for:

The obtained identifier is found in the pre-stored identifiers, and the redirected identifier is sent to the user equipment.

Referring to Fig. 4, the present invention also proposes a content load balancing device, comprising at least:

The second receiving module is configured to receive the pre-cached message from the request routing RR device;

The second sending module is configured to obtain the identifier corresponding to the URL in the pre-cached message, and send the pre-cached message to the cache device corresponding to the obtained identifier.

In the content load balancing device of the present invention, the second sending module is specifically used for:

In the preset correspondence between the regular expression and the identifier, search for the identifier corresponding to the regular expression matching the URL in the pre-cached message, and send the pre-cached message to the cache device corresponding to the obtained identifier.

In the content load balancing device of the present invention, the second receiving module is also used for:

receiving a message from the RR device indicating to delete the cached content;

The second sending module is also used for:

The identifier corresponding to the URL in the message indicating to delete the cached content is obtained, and the message indicating to delete the cached content is sent to the cache device corresponding to the obtained identifier.

In the content load balancing device of the present invention, the second receiving module is also used for:

Receive an access request from a user device;

The second sending module is also used for:

Obtain the identifier corresponding to the URL in the access request, and send the redirection identifier to the user equipment.

Referring to FIG. 5, the present invention also proposes a cache device, including at least:

A third receiving module, configured to receive the pre-cached message from the content load balancing device;

The third sending module is used to obtain the identifier corresponding to the URL in the pre-cached message, calculate the path corresponding to the identifier, cache the content corresponding to the URL downloaded from the server to the calculated path, and send a cache success message to the RR device .

In the cache device of the present invention, the third sending module is specifically used for:

In the preset correspondence between the regular expression and the identifier, find the identifier corresponding to the regular expression that matches the URL in the pre-cache message, calculate the path corresponding to the identifier, and download the content corresponding to the URL from the server Buffer to the calculated path, and send a message of successful buffering to the RR device.

In the cache device of the present invention, it also includes:

The deletion module is used to determine that the cached content has exceeded the validity period; or, if it is determined that the total size of the cache or the number of caches is greater than or equal to the second preset threshold, delete the cached content that exceeds the validity period, or delete the minimum number of accesses cached content.

In the cache device of the present invention, the third receiving module is also used for:

Receive an access request from a user device;

The third sending module is also used for:

Obtain the identifier corresponding to the URL in the access request, calculate the path corresponding to the identifier, and send the content in the path to the user device.

Referring to Fig. 6, the present invention also proposes a system for caching and serving content, at least including:

The request routing RR device is used to hijack the access request of the user equipment; obtain the identifier corresponding to the resource locator URL in the access request, find the obtained identifier in the pre-saved identifier, and send a pre-cache message to the content load balancing device; Receive the cache success message from the cache device, and save the obtained identifier;

A content load balancing device, configured to obtain an identifier corresponding to the URL in the pre-cached message, and send the pre-cached message to the cache device corresponding to the obtained identifier;

The caching device is configured to obtain the identifier corresponding to the URL in the pre-cached message, calculate the path corresponding to the identifier, cache the content corresponding to the URL downloaded from the server to the calculated path, and send a cache success message to the RR device.

In the system of the present invention, the RR device is also used for:

Find the obtained identifier in the pre-saved identifiers, and send the redirection identifier to the user equipment;

Content load balancers are also used to:

Receive an access request from the user equipment, obtain an identifier corresponding to the URL in the access request, and send an identifier indicating redirection to the user equipment;

Cache devices are also used to:

Receive the access request from the user equipment, acquire the identifier corresponding to the URL in the access request, calculate the path corresponding to the identifier, and send the content in the path to the user equipment.

It should be noted that the above-described embodiments are only for the convenience of those skilled in the art to understand, and are not intended to limit the protection scope of the present invention. Any obvious replacement and improvement made by the invention, or application to other business fields, etc. are within the protection scope of the present invention.

Claims (20)

1. it is a kind of caching and service content method, it is characterised in that include：

Request route RR devices kidnap the access request of user equipment；

RR devices obtain the corresponding marks of resource localizer URL in access request, what is pre-saved Search in mark less than the mark for obtaining, to content load balancing apparatus pre-cache message is sent；

Content load balancer obtains the corresponding marks of URL in pre-cache message, by pre-cache message It is sent to the corresponding buffer memory device of mark of acquisition；

Buffer memory device obtains the corresponding marks of URL in pre-cache message, calculates the corresponding path of mark, By the corresponding content cachings of the URL for downloading from a server to calculated path, and to RR devices Send the successful message of caching；

RR devices preserve the mark for obtaining.

2. method according to claim 1, it is characterised in that also include before the method：

The RR devices judge that the corresponding contents of the URL are accessed for number of times more than or equal to first Predetermined threshold value.

3. method according to claim 1 and 2, it is characterised in that the RR devices are obtained visits Ask that corresponding mark includes the URL in request：

In corresponding relation of the RR devices between the regular expression and mark for pre-setting, search Mark corresponding with the regular expression that the URL in the access request matches.

4. method according to claim 1 and 2, it is characterised in that the balanced dress of the content load Putting the corresponding marks of the URL obtained in pre-cache message includes：

Corresponding relation of the content load balancer between the regular expression and mark for pre-setting In, search mark corresponding with the regular expression that the URL in the pre-cache message matches.

5. method according to claim 1 and 2, it is characterised in that the buffer memory device obtains pre- The corresponding marks of URL in buffered message include：

In corresponding relation of the buffer memory device between the regular expression and mark for pre-setting, search Mark corresponding with the regular expression that the URL in the pre-cache message matches.

6. method according to claim 1 and 2, it is characterised in that when the buffer memory device judges The content for going out caching exceedes the term of validity；Or, judge cache total size or caching number be more than or During equal to the second predetermined threshold value, the method also includes：

The buffer memory device deletes the content of the caching more than the term of validity, or deletes accessed number of times minimum The content of caching.

7. method according to claim 1 and 2, it is characterised in that when RR devices are protected in advance When the mark of acquisition is found in the mark deposited, the method also includes：

The RR devices send to user equipment and represent the mark for redirecting；

The content load balancer receives the access request from the user equipment, obtains described The corresponding marks of URL in access request, send to the user equipment and represent the mark for redirecting；

The corresponding buffer memory device of mark of acquisition receives the access request from the user equipment, obtains The corresponding marks of URL in the access request, calculate the corresponding path of mark, by the content in path It is sent to user equipment.

8. a kind of request route RR devices, it is characterised in that at least include：

Module is kidnapped, for kidnapping the access request of user equipment；

First sending module, for obtaining access request in the corresponding marks of resource localizer URL, Search in the mark for pre-saving less than the mark for obtaining, send pre-cache to content load balancing apparatus and disappear Breath；

First receiver module, it is corresponding slow for receiving the corresponding marks of the URL in access request The successful message of caching of equipment is deposited, the mark for obtaining is preserved.

9. RR devices according to claim 8, it is characterised in that the abduction module is specifically used In：

Judge that the corresponding contents of the URL are accessed for number of times more than or equal to the first predetermined threshold value, rob Hold the access request of user equipment.

10. RR devices according to claim 8 or claim 9, it is characterised in that described first sends Module specifically for：

In corresponding relation between the regular expression and mark for pre-setting, searching please with the access The corresponding mark of regular expression that URL in asking matches, search in the mark for pre-saving less than The mark of acquisition, to content load balancing apparatus pre-cache message is sent.

11. RR devices according to claim 8 or claim 9, it is characterised in that described first sends Module is additionally operable to：

The mark of acquisition is found in the mark for pre-saving, is sent to user equipment and is represented what is redirected Mark.

12. a kind of content load balancers, it is characterised in that at least include：

Second receiver module, for receiving the pre-cache message from request route RR devices；

Second sending module, for obtaining pre-cache message in the corresponding marks of URL, pre-cache is disappeared Breath is sent to the corresponding buffer memory device of mark of acquisition.

13. content load balancers according to claim 12, it is characterised in that described second Sending module specifically for：

In corresponding relation between the regular expression and mark for pre-setting, search and the pre-cache The corresponding mark of regular expression that URL in message matches, by pre-cache message acquisition is sent to Identify corresponding buffer memory device.

14. content load balancers according to claim 12, it is characterised in that described second Receiver module is additionally operable to：

Receive the access request from user equipment；

Second sending module is additionally operable to：

The corresponding marks of URL in the access request are obtained, expression is sent to the user equipment and is reset To mark.

15. a kind of buffer memory devices, it is characterised in that at least include：

3rd receiver module, for receiving the pre-cache message from content load balancer；

3rd sending module, for obtaining pre-cache message in the corresponding marks of URL, calculate mark it is right The path answered, by the corresponding content cachings of the URL for downloading from a server to calculated path, and The successful message of caching is sent to RR devices.

16. buffer memory devices according to claim 15, it is characterised in that the 3rd sending module Specifically for：

In corresponding relation between the regular expression and mark for pre-setting, search and the pre-cache The corresponding mark of regular expression that URL in message matches, calculates the corresponding path of mark, will be from The corresponding content cachings of URL downloaded on server send to calculated path to RR devices Cache successful message.

17. buffer memory devices according to claim 15, it is characterised in that also include：

Removing module, for judging that the content for caching exceedes the term of validity；Or, judge the total of caching The number of size or caching is more than or equal to the second predetermined threshold value, deletes the content of the caching more than the term of validity, Or the content of the caching of the accessed number of times minimum of deletion.

18. buffer memory devices according to claim 15, it is characterised in that the 3rd receiver module It is additionally operable to：

Receive the access request from user equipment；

3rd sending module is additionally operable to：

The corresponding marks of URL in the access request are obtained, the corresponding path of mark is calculated, by path In content be sent to user equipment.

The system of a kind of 19. cachings and service content, it is characterised in that at least include：

Request route RR devices, for kidnapping the access request of user equipment；In obtaining access request The corresponding marks of resource localizer URL, search less than the mark for obtaining in the mark for pre-saving, to Content load balancer sends pre-cache message；The successful message of caching from buffer memory device is received, Preserve the mark for obtaining；

Content load balancer, for obtaining pre-cache message in the corresponding marks of URL, will be pre- slow Deposit the corresponding buffer memory device of mark that message is sent to acquisition；

Buffer memory device, for obtaining pre-cache message in the corresponding marks of URL, calculate mark it is corresponding Path, by the corresponding content cachings of the URL for downloading from a server to calculated path, and to RR devices send the successful message of caching.

20. systems according to claim 19, it is characterised in that the RR devices are additionally operable to：

The mark of acquisition is found in the mark for pre-saving, is sent to user equipment and is represented what is redirected Mark；

The content load balancer is additionally operable to：

The access request from the user equipment is received, the URL correspondences in the access request are obtained Mark, to the user equipment send represent redirect mark；

The buffer memory device is additionally operable to：

The access request from the user equipment is received, the URL correspondences in the access request are obtained Mark, calculate the corresponding path of mark, the content in path is sent into user equipment.