KR20180067936A - System and for wordpress content delivery using cache server and browser cache - Google Patents

Abstract

The present invention relates to a WordPress content transmitting system using a cache server and a browser cache. A content server transmits content to a cache server and one or more browser caches which are data storages to be stored therein. If a client requests an IP address of the storage to transmit the content to a provider name server, the provider name server converts the IP address of the storage to transmit the content into the client in consideration of a response speed between the client and the cache server and a response speed between the client and the browser caches. According to the present invention, a content request can be responded by selecting an optimum storage of the browser caches and the cache sever which store the content. Accordingly, the present invention can efficiently use a network.

Description

[0001] The present invention relates to a content delivery system using a cache server and a browser cache,

The present invention relates to a cache server and a wordpress content transmission system using a browser cache. More particularly, the present invention relates to a cache server and a browser cache, And more particularly, to a system and method for transmitting content using a cache server and a browser cache that allow the content to be transferred from a specific repository.

A great deal of load arises for the web server to provide a part or all of the contents one by one to each of a plurality of clients. This is because the web server is connected to a single ISP (Internet Service Provider) while the client requesting the content exists in multiple ISPs.

Therefore, the traffic between ISPs increases exponentially as the number of content providers and clients increases, and transmission delay and / or transmission failure rate increases due to traffic congestion. In the worst case, the web server may fail-over.

The currently commercialized CDN service designates a cache server corresponding to an IP (Internet Protocol) address of a client. If there is a content request from the client, it checks whether the corresponding content is stored in the corresponding cache server. If not, And sends the request to the server.

However, if such a method is used, if a specific content is not stored in a cache server corresponding to a client, there is a problem that a request for content is generated in an origin content server providing the content . Therefore, there is a need for research on a system capable of providing requested contents from a client without adding a cache server.

According to an embodiment of the present invention, when there is a content request from a client, a response speed between a client and a cache server storing the content and a response speed between a client and a browser cache belonging to a different client are considered, A cache server for transmitting content, and a wordpress content transmission system using a browser cache.

The present invention provides a cache server for transmitting content from a content server to a cache server when a request for the content is received from the client, When receiving an IP address of a storage to be transmitted, considering the response speed between the client and the cache server and the response speed of the client and one or more browser caches storing the contents, the IP address of the storage to which the contents are to be transmitted is returned to the client Lt; / RTI >

The business name server of the present invention includes a database unit having an input / output unit for data transmission / reception, a response rate between a client and a cache server storing contents, and response speed information between the client and one or more browser caches storing the contents, When receiving the IP address of the repository through which the content is to be transmitted from the client, the control unit returns the IP address of the repository to which the content is to be transmitted to the client in consideration of the response speed information held by the database unit.

The provider name server of the present invention includes an input / output unit for data transmission / reception, a cache unit, a database unit having content information stored in one or more browser caches, and a storage unit And a control unit for measuring a response speed between the storage unit storing the specific content and the client by referring to the content information and returning the IP address of the storage having the fastest response speed to the client.

According to the present invention, in consideration of the response speed between the cache server storing the contents and the client requesting the contents and the browser cache, the contents can be transmitted from the optimal storage having a better network response or a faster response speed, And the user convenience can be improved.

1 is a configuration diagram of a content transmission system according to an embodiment of the present invention.
2 is a configuration diagram of the business name server shown in FIG.
3 is an exemplary view of a browser cache group table and a link information table stored in the database unit of FIG.
4 is an exemplary diagram of a response speed information table stored in the database unit of FIG.
5 is a flowchart of a content transmission method according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention. The same reference numerals are used for portions having similar functions and functions throughout the drawings.

1 is a configuration diagram of a content transmission system according to an embodiment of the present invention. Referring to FIG. 1, the contents transmission system of the present embodiment includes first to n-th clients 110-1 to 110-n, first to n-th browser caches 120-1 to 120- A content server 150, and a network 160. The content server 150 includes a server 120,

First to nth clients 110-1 to 110-n are terminals of a computer or the like which receive information from a server connected to the network 160. [ When a URL (Uniform Resource Locator) for requesting a specific content is input to a browser, the first to nth clients 110-1 to 110-n receive a DNS (Domain Name Server To convert the domain name into the IP address of the content server 150 or the cache server 140 that provides the content, and transmits the domain name to the server corresponding to the corresponding IP address And to connect them.

The first to nth browser caches 120-1 to 120-n are connected to the browsers of the first to nth clients 110-1 to 110-n, respectively, Is a content repository corresponding to " That is, when each browser receives specific content from the content server 150 or the cache server 140, a corresponding one of the first to nth browser caches 120-1, ..., and 120- In a browser cache of the browser, and is used for displaying through a browser window or the like.

The business name server 130 is a DNS (Domain Name Server) that converts a domain name to an IP address. A name server that plays a role of converting a symbolic name into a numeric address used by a machine It is a kind. The provider name server 130 has the IP address information of the cache server 140 as a name server operated by the CDN provider for providing the CDN service.

The cache server 140 is a repository for storing a copy of content data stored and managed by the content server 150, for example, a copy server or a ghost server. The cache server 140 responds to requests for contents from any one of the first to n-th clients 110-1 to 110-n.

The content server 150 stores web pages and objects provided by a content provider and receives a request from one of the first to nth clients 110-1 to 110-n. It is a server that plays a role of responding when a content request is made. That is, the content server 150 transmits the requested content from the specific client, and transmits a part of the content held by the content server 150 to the cache server 140 for storage. Accordingly, the cache server 140 can quickly provide contents according to a request of a specific client.

The network 160 is used to transfer data between the first to nth clients 110-1 to 110-n, the business name server 130, the cache server 140 and the content server 150, Means a data communication network for exchange.

When a URL for content request is input to the browser of any one of the first to n-th clients 110-1 to 110-n, the corresponding name is transmitted to the business name server 130 via the local name server The IP address of the repository to which the content is to be transmitted.

For example, if the client requesting the specific content is the first client 110-1, the business name server 130 may determine the response speed between the first client 110-1 and the cache server 140, -1 and the response speed with one or more browser caches of the second browser cache to the nth browser cache 120-2, ..., 120-n, And returns the IP address of the selected storage to the first client 110-1.

In this case, when the provider name server 130 receives the IP address request from the first client 110-1, it can measure the response speed of each repository, select the repository, and transmit the IP address of the repository. In addition, the provider name server 130 measures the response speed in advance and stores the information. When receiving the IP address request from the first client 110-1, And transmit the IP address of the corresponding repository.

When the response speed is measured in advance by the provider name server 130, for example, a specific measurement time can be set and the response speed can be measured at the set time, The response speed may be measured.

When the provider name server 130 measures the response speed in response to the IP address request from the first client 110-1 and returns the IP address of the storage to which the content is to be transmitted, In case of returning the address, the optimum storage is selected and the IP address of the storage is returned. The optimum storage can be selected, for example, by selecting the storage having the fastest response speed.

Also, the IP address of the storage to which the content is to be transferred may be returned to the first client 110-1, for example, when the business name server 130 considers the network load of each storage, . ≪ / RTI >

In one embodiment of the present invention, the first browser cache 120-1 in the first client 110-1 and the second browser cache to the nth browser cache 120-2, ..., 120-n may be browser caches grouped to belong to the same browser cache group. For example, the first to nth browser caches 120-1, ..., 120-n grouped into the same group may be browser caches within locally adjacent clients, which may be locally adjacent clients or This is because the response speed between browser caches is generally fast.

At this time, the browser caches included in each group may be grouped so that they do not overlap with each other, and some browser caches may be grouped in an overlapping manner so that they belong to different groups.

The configuration and operation of the business name server 130 according to an embodiment of the present invention will be described in more detail with reference to FIG.

FIG. 2 is a configuration diagram of the business name server 130 shown in FIG. 1 according to an embodiment of the present invention. 2, the business name server 130 according to the present embodiment includes an input / output unit 210, a control unit 220, and a database unit 230.

The input / output unit 210 has an interface for transmitting and receiving data through the network 160. [

The database unit 230 stores the content information stored in the cache server 140 and the content information stored in one or more browser caches of the first browser cache to the nth browser cache 120-1 to 120- to be.

The control unit 220 receives an IP address of a storage to which content is to be transmitted from a specific one of the first to nth clients 110-1 to 110-n through the input / output unit 210, The server 230 measures the response speed between the specific client and the repository having the corresponding content by referring to the content information held by the client 230 and returns the IP address of the repository having the fastest response speed to the specific client.

In another embodiment of the present invention, the database unit 230 determines the response speed between each of the first to n-th clients 110-1 to 110-n and the cache server 140, a response between one or more browser caches of the first browser cache to the nth browser cache 120-1, ..., 120-n belonging to each of the clients 110-1, ..., 110- It has speed information.

At this time, when the control unit 220 receives an IP address of a storage to which contents are to be transmitted from a specific one of the first to nth clients 110-1 to 110-n through the input / output unit 210 , And returns the IP address of the repository to which the content is to be transmitted to the client with reference to the response speed information held by the database unit 230. The IP address returned may be the IP address of the storage having the fastest response speed as described above.

The information held by the database unit 230 according to an embodiment of the present invention will be described in more detail with reference to FIGS. 3 and 4. FIG.

FIG. 3 is an exemplary view of a browser cache group table 310 and a link information table 320 stored in the database unit 230 of FIG. 2 according to an embodiment of the present invention.

Referring to FIG. 3, the browser cache group table 310 includes a client IP address and a browser cache group item. The link information table 320 also includes a browser cache group, a client IP address, and a storage content item.

In the browser cache group table 310, the client IP address item is a field including IP address information corresponding to each client. The browser cache group item is a field including information of a browser cache group to which the browser cache corresponding to each client IP address belongs.

In the link information table 320, the browser cache group item is an information field linked with each browser cache group item in the browser cache group table 310, and the link of information is, for example, a linked list ). ≪ / RTI > The client IP address item is a field including IP address information of a client belonging to each browser cache group. The stored content item is a field indicating information of contents stored in the browser cache of each client.

4 is an exemplary view of a response speed information table 400 stored in the database unit 230 of FIG. 2 according to an embodiment of the present invention. In the present embodiment, the database unit 230 of the business name server 130 further stores the response speed information table 400 in addition to the browser cache group table 310 and the linked information table 320 shown in FIG. 3 So that the control unit 220 of the business name server 130 can select a storage to which specific contents are to be transmitted and utilize the IP address of the corresponding storage to return to the client.

Referring to FIG. 4, the response speed information table 400 includes a client IP address, an IP address of another client, and a response speed item.

The client IP address item is a field containing IP address information of the client requesting the content.

The IP address item of the other client is a field including IP address information corresponding to a browser cache of another client belonging to a browser cache group such as a specific client's browser cache.

The response rate field is a field containing the response rate information between each client and the browser cache belonging to another client.

The content providing process according to an embodiment of the present invention will be described in detail with reference to FIG.

5 is a flowchart of a content transmission method according to an embodiment of the present invention. Referring to FIGS. 1 and 5, the content server 150 transmits and stores specific content to the cache server 140 (S510). In addition, the content server 150 includes the second browser cache 120-2 and transmits the content to one or more browser caches and stores the content in the browser cache (S520). At this time, steps S510 and S520 may be performed in a different order.

The browser cache for receiving and storing contents in step S520 may be, for example, a browser cache grouped into a plurality of browser caches, and the grouping may be performed by grouping a plurality of locally adjacent browser caches into one group Lt; / RTI >

The content transmission and storage in steps S510 and S520 may be performed by a method in which the content server 150 stores content transmitted in response to a content request from a specific client.

The content transmission and storage in steps S510 and S520 may be performed in a manner such that the content stored in the content server 150 has a higher frequency of request than the other content, And may be transmitted in advance and stored before a request from a specific client is made.

The first client 110-1 transmits the IP address of the storage to which the corresponding content is to be transmitted to the first client 110-1 among the stores storing the contents in the step S510 and the step S520 to the business name server 130 (S530).

The business name server 130 receiving the IP address request in step S530 determines whether the response speed between the first client 110-1 and the cache server 140 and the response speed between the first client and one or more browser caches The response speed is considered (S540), and the IP address of the client to which the second browser cache 120-2 selected as the optimal storage belongs is returned to the first client (S550).

The response speed consideration in step S540 may be determined by measuring the response speed after receiving the IP address request or may be measured in a predetermined manner by the business name server 130, And the response speed may be considered by referring to the stored response speed information.

At this time, the response speed is measured, for example, when the business name server 130 transmits the IP address of the cache server 140 or the IP address information of the client corresponding to each browser cache to the first client 110-1 The first client 110-1 transmits a message for calculating a response speed to each of the corresponding repositories so as to receive a response and then receives the RTT information from the provider name server 130 . ≪ / RTI >

In step S550, for example, the IP address information of the second browser cache 120-2 client having the fastest response speed among the response speeds considered in step S540 is returned to the first client 110-1 can do. At this time, the browser cache 120-1 of the first client 110-1 and the second browser cache 120-2 may be browser caches belonging to the same browser cache group.

In step S550, the first client 110-1, which has returned the IP address corresponding to the second browser cache 120-2, accesses the corresponding IP address to request the content (S560) The content is received from the content server 120-2 (S570). The content transmission in step S570 may be performed by, for example, a peer-to-peer (P2P) scheme.

According to the present invention, it is possible to transmit the content in an optimal storage having a better or faster response speed in consideration of the response speed of the cache server and the browser cache storing the content requested by the client. Accordingly, it is possible to quickly respond to a content request from a client without expanding and operating a cache server for providing a CDN service, thereby distributing content requests to the cache server and the content server, The convenience of the user can be improved.

110: Client
120: Browser cache
130: Business name server
140: Cache server
150: Content server

Claims (4)

A cache server for receiving and storing word-press content from a content server and for transmitting the request to the client when there is a request for the word-press content from a client; And
When receiving an IP address of a repository to which the wordpress content is to be transmitted from the client, receiving a response from the client and the cache server, A business name server for returning to the client the IP address of the repository to which the content is to be transferred; And a browser cache. The method according to claim 1,
The business name server
The browser cache of the group of browser cache groups including a plurality of browser caches considers the response speed of the client to the one or more browser caches belonging to a browser cache group containing the browser cache of the client. A WordPress Content Delivery System Using. An input / output unit for data transmission / reception;
A database unit having a response speed between a client and a cache server storing word-press contents, and response speed information between at least one browser cache storing the client and the word-press contents; And
A control unit for returning, to the client, an IP address of a repository to which the word-press content is to be transmitted, when receiving an IP address of a repository through which the word-press content is to be transmitted from the client through the input / output unit, A business name server. An input / output unit for data transmission / reception;
A database unit having word processors and cache servers and wordpress content information stored in one or more browser caches; And
When the IP address of the repository to which the specific word-press content is to be transmitted is requested from the client through the input / output unit, the response speed between the repository storing the specific word-press content and the client is measured with reference to the word- A controller for returning an IP address of a storage having a fast response speed to the client; A business name server.

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