JP5197540B2 - Relay server and method for sharing information - Google Patents

Description

  The present invention relates to a relay server and method for sharing information. In particular, the present invention relates to a relay server and method for managing and sharing new article information.

  Conventionally, in a computer network, client terminals share information such as services and files among a plurality of client terminals via a server connected to the computer network.

  As a client / server system for sharing information in this way, for example, Patent Document 1 that discloses a technique for allocating a synchronous information sharing server capable of transmitting the highest quality video, audio, and characters to an information sharing session is disclosed in Japanese Patent Application Laid-Open No. 2004-151867. Are known.

  In Patent Document 1, a synchronous information sharing management server acquires an address of a local area network assigned to an information sharing session terminal participating in an information sharing session, and a plurality of synchronous information sharing is performed based on the acquired address. A technique of allocating one of servers as a synchronous information sharing server for relaying an information sharing session is disclosed. Then, the client terminals share information between the client terminals via the assigned synchronous information sharing server.

JP 2008-225619A

  However, Patent Document 1 discloses that the client terminal acquires information from the assigned synchronous information sharing server to share the information between the client terminals. There is no disclosure about sharing of information between different client terminals by a server. In other words, when a client terminal accepts articles, blog information, etc. and stores them in a synchronous information sharing server, it can usually be referenced or added only from the client terminal connected to the synchronous information sharing server. .

  Therefore, referring to posted articles or adding to posted articles from a client terminal connected to a server that accepts posts such as articles and blog information, etc. There is a need for a server that can do this.

  In the present invention, even if the front-end server is not the front-end server that accepts new posts among the front-end servers that accept posts, it can refer to the posted new articles and add the accepted articles to the articles. It is an object of the present invention to provide a relay server and method.

  The present invention provides the following solutions.

  (1) A relay server that is communicably connected to a plurality of front-end servers that accept article postings from a user terminal, the memory storing new arrival information indicating that the posting has been accepted, and the plurality of front-ends Post information receiving means for receiving post information from any one of the front-end servers, and new information is created from the post information received by the post information receiving means, and the new information is stored in the memory. An information storage means, a relay means for delivering the new arrival information created by the new arrival information storage means to all other front end servers among the plurality of front end servers, and the new arrival information delivered by the relay means. A specifying means for specifying a front-end server that is not owned, and a front-end server specified by the specifying means A relay server and a resume means for transmitting all of the new information stored in the memory.

  According to the configuration of (1), the relay server according to the present invention is a relay server that is communicably connected to a plurality of front-end servers that accept article postings from the user terminal, and indicates that the posting has been accepted. It has a memory for storing newly arrived information. The relay server according to the present invention receives post information from any one of a plurality of front end servers, creates new arrival information from the received post information, and stores the new arrival information in a memory. The newly arrived information is distributed to all other front end servers among the plurality of front end servers. In addition, the relay server according to the present invention specifies a front-end server that does not hold the distributed new arrival information, and transmits all the new arrival information stored in the memory to the specified front-end server.

  That is, the relay server according to the present invention stores the new arrival information created from the posted information transmitted by any one of the plurality of front end servers in the memory, To the front-end server. Then, the relay server according to the present invention specifies a front-end server that does not hold the distributed new arrival information, and transmits all the new arrival information stored in the memory. Therefore, the relay server according to the present invention distributes new arrival information to the front-end server, identifies a front-end server that does not have new arrival information, and transmits all new arrival information stored in the memory. It is possible to synchronize new information between servers. As a result, even if the front-end server is not the front-end server that accepted the new post, the front-end server refers to the posted new article and adds the accepted article to the article based on the new information distributed. be able to.

  (2) When the new arrival information is not stored in the memory, the new arrival information is requested to the backup server that backs up the memory, and all the new arrival information is received from the backup server and stored in the memory. New arrival information acquisition means is further provided, and the relay means distributes the new arrival information created by the new arrival information storage means to all other front end servers among the plurality of front end servers, and to the backup server. The relay server according to (1) for distribution.

  According to the configuration of (2), when the new arrival information is not stored in the memory, the relay server described in (1) requests the new arrival information from the backup server that backs up the memory, New arrival information is received and stored in the memory. The relay server according to the present invention distributes the created new arrival information to all other front-end servers among the plurality of front-end servers and also to the backup server.

  That is, the relay server according to the present invention distributes the created new arrival information to all front-end servers other than the front-end server that transmitted the posted information among the plurality of front-end servers, and also distributes it to the backup server, If no new arrival information is stored in the server, all new arrival information is acquired from the backup server and stored in the memory. Therefore, since the new arrival information can be acquired from the backup server when the new arrival information is not stored in the memory, the relay server according to the present invention maintains the reliability that the new arrival information is securely held. be able to.

  (3) The relay server according to (1) or (2), wherein the memory is configured as a FIFO memory in a cache memory.

  Therefore, since the relay server according to the present invention stores newly arrived information in the cache memory, it can perform higher-speed processing.

  (4) A method in which a relay server that is communicably connected to a plurality of front-end servers that accept article postings from a user terminal and has a memory that stores new arrival information indicating acceptance of the postings distributes the new arrival information. And receiving post information from any one of the plurality of front end servers, creating the new arrival information from the received post information, and storing the new arrival information in the memory. Distributing the created new arrival information to all other front end servers among the plurality of front end servers, identifying a front end server that does not hold the distributed new arrival information, and identifying the front Send all the new arrival information stored in the memory to the end server. The method comprising the steps, a.

  Therefore, in the method according to the present invention, the relay server distributes new arrival information to the front-end server, specifies a front-end server that does not have new arrival information, and transmits all new arrival information stored in the memory. It is possible to synchronize the new arrival information between the front-end servers. As a result, even if the front-end server is not the front-end server that accepted the new post, the front-end server refers to the posted new article and adds the accepted article to the article based on the new information distributed. be able to.

  According to the present invention, the relay server distributes new arrival information to the front-end servers, specifies a front-end server that does not have new arrival information, transmits all stored new arrival information, and Synchronize about new arrival information. As a result, even if the front-end server is not the front-end server that accepts new posts among the front-end servers that accept posts, the front-end server refers to the posted new articles based on the delivered new information, You can add articles that you have accepted to articles.

  Furthermore, the relay server according to the present invention stores new arrival information in a high-speed processing memory, and can acquire all new arrival information from the backup server when no new arrival information is stored in the memory. Therefore, the relay server according to the present invention can maintain the reliability that new arrival information is securely held.

It is a block diagram which shows the characteristic of the relay server 10 which concerns on one Embodiment of this invention. It is a block diagram which shows the function structure of the relay server 10 which concerns on one Embodiment of this invention. It is a figure which shows the example of the data of the new arrival information of the relay server 10 which concerns on one Embodiment of this invention. It is a flowchart which shows the main process of the relay server 10 which concerns on one Embodiment of this invention. FIG. 5 is a flowchart illustrating main processing continued from FIG. 4. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  This embodiment is applied to a computer and its peripheral devices. Each unit in the present embodiment is configured by hardware included in a computer and its peripheral devices, and software that controls the hardware.

  The hardware includes a storage unit, a communication device, a display device, and an input device in addition to a CPU (Central Processing Unit) as a control unit. Examples of the storage unit include a memory (RAM: Random Access Memory, ROM: Read Only Memory, etc.), a hard disk drive (HDD: Hard Disk Drive), and an optical disk (CD: Compact Disc, DVD: Digital Versatile Drive, etc.). It is done. Examples of the communication device include various wired and wireless interface devices. Examples of the display device include various displays such as a liquid crystal display and a plasma display. Examples of the input device include a keyboard and a pointing device (mouse, tracking ball, etc.).

  The software includes a computer program and data for controlling the hardware. The computer program and data are stored in the storage unit, and are appropriately executed and referenced by the control unit. The computer program and data can be distributed via a communication line, or can be recorded on a computer-readable medium such as a CD-ROM and distributed.

  FIG. 1 is a block diagram showing features of a relay server 10 according to an embodiment of the present invention. The relay server 10 is communicably connected to a plurality of front-end servers 40a, 40b... (Hereinafter referred to as “front-end server 40” when not distinguishing a plurality of front-end servers) that accepts posting of articles from the user. Is done. The relay server 10 includes a FIFO (First In First Out) memory 20 as a memory, a posted information receiving unit 11 as a posted information receiving unit, a newly arrived information storing unit 12 as a newly arrived information storing unit, and a relay unit 13 as a relay unit. And a specifying unit 14 as specifying means and a resume unit 15 as resuming means.

  The FIFO memory 20 is a first-in first-out memory that stores newly arrived information in the order in which it is stored. That is, when the data amount of the stored new arrival information reaches the capacity of the FIFO memory 20, the FIFO memory 20 erases the first new arrival information stored therein and newly stores it. Remember one case. For example, if the FIFO memory 20 can store 100 new arrival information, the FIFO memory 20 sequentially stores the new arrival information from the first to the 100th stored, and when the 101st is stored, The first case stored in the table is deleted, and the second to 101st cases are stored. Furthermore, the FIFO memory 20 is configured on, for example, a RAM or a cache memory, and can be read or written at a higher speed than an auxiliary storage device such as a flash memory.

  The posted information receiving unit 11 receives posted information from any one of the plurality of front end servers 40. That is, post information is received from a user terminal (not shown) in the front end server 40, and the post information receiving unit 11 receives post information from the received one front end server 40. For example, a front end server 40 of a blog or SNS (Social Networking Service) accepts posting of an article from a user terminal, and stores the accepted posted article data in a back end server (not shown). Then, the front-end server 40 transmits post information including back-end server information and posted user information to the post-information receiving unit 11.

  The new arrival information storage unit 12 creates new arrival information from the posting information received by the posting information reception unit 11 and stores the new arrival information in the FIFO memory 20. The new arrival information created includes user information and article data information. The user information includes, for example, a user ID. The article data information includes, for example, a posting time, information on the front-end server 40 that accepted the posting, article identification information, and information on the back-end server that stores the article data.

  The relay unit 13 distributes the new arrival information created by the new arrival information storage unit 12 to all other front end servers 40 among the plurality of front end servers 40. That is, the relay unit 13 distributes new arrival information to all the front end servers 40 other than the front end server 40 that has transmitted the posted information among the plurality of front end servers 40. The front-end server 40 stores the distributed new arrival information in a memory, so that the front-end server 40 (for example, a proxy server) can be inquired about new arrival information about an article posted by another front-end server 40. It can be acquired within the server 40.

  The specifying unit 14 specifies the front-end server 40 that does not have the new arrival information distributed by the relay unit 13. For example, the specifying unit 14 receives the request signal for requesting new arrival information from the front end server 40 that has lost the new arrival information held in the memory due to restart or the like, thereby causing the front end server 40 to receive the new arrival information. Is identified as a front-end server 40 that does not own Further, when the relay unit 13 receives new arrival information from the front end server 40 when the new arrival information is distributed to the front end server 40, the specifying unit 14 sends the error information to the front end. The server 40 is identified as a front-end server 40 that does not have new arrival information.

  The resume unit 15 transmits all new arrival information stored in the FIFO memory 20 to the front-end server 40 specified by the specifying unit 14. For example, the new arrival information may be transmitted sequentially in the order stored in the FIFO memory 20, or may be performed in a batch while maintaining the storage order of the new arrival information.

  FIG. 2 is a block diagram showing a functional configuration of the relay server 10 according to the embodiment of the present invention. The relay server 10 includes a new arrival information acquisition unit 16 as new arrival information acquisition means in addition to the configuration of FIG. A backup server 30 is connected to the relay server 10.

  The backup server 30 is a server that backs up the memory, and stores new arrival information that is the same as that of the relay server 10, for example, in the memory.

  The relay unit 13 delivers to the backup server 30 in addition to the functions described above. That is, the relay unit 13 distributes the new arrival information created by the new arrival information storage unit 12 to all the front end servers 40 other than the front end server 40 that transmitted the posted information among the plurality of front end servers 40, Delivered to the backup server 30.

  The new arrival information acquisition unit 16 requests new arrival information from the backup server 30 when new arrival information is not stored in the FIFO memory 20, receives all new arrival information from the backup server 30, and stores it in the FIFO memory 20. For example, when the relay server 10 itself restarts and deletes the new arrival information in the FIFO memory 20, the new arrival information acquisition unit 16 receives all the new arrival information held by the backup server 30 from the backup server 30. New arrival information is stored in the FIFO memory 20. Then, after the new arrival information acquisition unit 16 acquires all the new arrival information from the backup server 30, the new arrival information storage unit 12 stores the new arrival information created from the posted information in the FIFO memory 20.

  The front-end server 40 can transmit the information of the front-end server 40 that has accepted the posting, the article identification information, and the deletion request to the relay server 10 as posting information. By this transmission, the relay server 10 that has received the deletion request can delete only the new arrival information requested to be deleted from the new arrival information stored in the FIFO memory 20. Then, in response to a request to delete new arrival information distributed by the relay server 10, the distributed front-end server 40 and backup server 30 delete only new arrival information requested to be deleted from the new arrival information held in the memory. .

  FIG. 3 is a diagram illustrating an example of new arrival information data of the relay server 10 according to the embodiment of the present invention.

  The data of new arrival information is composed of user information and article data information. The user information includes a user ID that is identification information of the posted user. The article data information stores a posting time that is a time when the user has posted, an acceptance server ID that is identification information of the front-end server 40 that accepted the posting, an article ID that is article identification information, and posted article data. And an article data server ID which is identification information of the backend server to be executed. The user information may include information for authenticating the user such as a password in addition to the user ID. The article data information may also include the title of the posted article. For example, the front-end server 40 to which the new arrival information is distributed is not the front-end server 40 that has received a new post, but the new arrival posted based on the reception server ID, the article ID, and the article data server ID. Articles accepted can be added to the article.

  FIG. 4 is a flowchart showing a main process of the relay server 10 according to an embodiment of the present invention, and FIG. 5 is a flowchart showing the main process following FIG. This process starts with a program start command and ends with a program end command.

  In step S <b> 101 of FIG. 4, the CPU determines whether new arrival information is stored in the FIFO memory 20. If this determination is YES, the CPU moves the process to step S103, and if NO, the CPU moves the process to step S102.

  In step S <b> 102, the CPU acquires new arrival information from the backup server 30 and stores it. More specifically, the CPU transmits a command requesting new arrival information to the backup server 30, receives all new arrival information held by the backup server 30 from the backup server 30, and stores the received new arrival information in the FIFO memory 20. To store. Thereafter, the CPU moves the process to step S103.

  In step S <b> 103, the CPU determines whether posting information has been received from the front-end server 40. That is, the CPU determines the data received from the front end server 40 and determines whether or not the posting information has been received. If this determination is YES, the CPU moves the process to step S106 of FIG. 5, and if NO, the CPU moves the process to step S104.

  In step S104, the CPU determines whether or not a request for new arrival information has been received. That is, the CPU determines the data received from the front-end server 40 and determines whether a request signal for requesting new arrival information has been received. If this determination is YES, the CPU moves the process to step S105, and if NO, the CPU moves the process to step S103.

  In step S <b> 105, the CPU transmits all newly arrived information in the FIFO memory 20 to the front end server 40. More specifically, the CPU sequentially transmits all new arrival information stored in the FIFO memory 20 to the front-end server 40 in the order stored in the FIFO memory 20. Thereafter, the CPU moves the process to step S103.

  In step S106 of FIG. 5, the CPU receives post information. More specifically, the CPU, from the front-end server 40 that received the posting from the user's terminal, the user ID of the user who posted, the posting time, the received server ID of the received front-end server 40, and the received article And post information including the article data server ID of the back-end server storing the accepted article. Thereafter, the CPU moves the process to step S107.

  In step S <b> 107, the CPU creates new arrival information and stores it in the FIFO memory 20. More specifically, the CPU creates new arrival information including the user ID, the posting time, the reception server ID, the article ID, and the article data server ID based on the posting information, and stores it in the FIFO memory 20. To do. The FIFO memory 20 stores newly arrived article information in the order in which it is stored. If the storage capacity is exceeded, the FIFO memory 20 erases the first new arrival information stored therein and stores the latest new arrival information last. When the new arrival information is a deletion request, the CPU deletes only the new arrival information designated by the reception server ID and the article ID. Thereafter, the CPU moves the process to step S108.

  In step S <b> 108, the CPU distributes new arrival information to all other front-end servers 40 and to the backup server 30. More specifically, the CPU distributes the created new arrival information to all the front end servers 40 other than the front end server 40 that transmitted the posted information among the front end servers 40, and also backs up the created new arrival information. Delivered to the server 30. When the new arrival information created based on the posted information is a deletion request, similarly, the CPU distributes the new arrival information deletion request to all the front end servers 40 other than the front end server 40 that transmitted the deletion request. At the same time, it is distributed to the backup server 30. Thereafter, the CPU moves the process to step S109.

  In step S109, the CPU determines whether error information is received from the front-end server 40. More specifically, the CPU determines whether or not data indicating that there is no new arrival information is received from the front-end server 40 to which the new arrival information is transmitted. If this determination is YES, the CPU moves the process to step S110, and if NO, the CPU moves the process to step S103 in FIG.

  In step S <b> 110, the CPU transmits all newly arrived information in the FIFO memory 20 to the front end server 40. More specifically, the CPU sequentially transmits all new arrival information stored in the FIFO memory 20 to the front-end server 40 in the order stored in the FIFO memory 20. Thereafter, the CPU shifts the processing to step S103 in FIG.

  According to the present embodiment, the relay server 10 includes the FIFO memory 20 that stores newly arrived information indicating that the posting has been accepted. The relay server 10 receives post information from any one of the front end servers 40, creates new arrival information from the received post information, and stores the new arrival information in the FIFO memory 20. Then, the new arrival information thus created is distributed to all the other front-end servers 40 among the plurality of front-end servers 40 and also to the backup server 30. Further, the relay server 10 specifies the front-end server 40 that does not hold the distributed new arrival information, and transmits all the new arrival information stored in the FIFO memory 20 to the specified front-end server 40. Accordingly, the relay server 10 distributes new arrival information to the front end server 40 and transmits all stored new arrival information to the front end server 40 that does not have the new arrival information. Synchronize information. As a result, even if the front-end server 40 is not the front-end server 40 that has received a new post, the front-end server 40 refers to the posted new article based on the distributed new arrival information, and the article received in the article is received. Can be added. Further, the relay server 10 can acquire all the new arrival information held by the backup server 30 from the backup server 30 when the new arrival information is not stored in the FIFO memory 20. Therefore, the relay server 10 can maintain the reliability that the newly arrived information is securely held.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

DESCRIPTION OF SYMBOLS 10 Relay server 11 Contribution information receiving part 12 New arrival information storage part 13 Relay part 14 Identification part 15 Resume part 16 New arrival information acquisition part 20 FIFO memory 30 Backup server 40 Front end server

Claims (4)

A relay server that is communicably connected to a plurality of front-end servers that accept article postings from a user terminal,
A memory for storing new arrival information indicating that the posting has been accepted;
Post information receiving means for receiving post information from any one of the plurality of front end servers;
New arrival information storage means for creating the new arrival information from the posting information received by the posting information reception means and storing the new arrival information in the memory;
Relay means for delivering the new arrival information created by the new arrival information storage means to all other front end servers among the plurality of front end servers;
A specifying means for specifying a front-end server that does not hold the new arrival information distributed by the relay means;
Resume means for transmitting all the new arrival information stored in the memory to the front end server specified by the specifying means;
A relay server comprising: When the new arrival information is not stored in the memory, the new arrival information is requested from the backup server that backs up the memory, all the new arrival information is received from the backup server, and the new arrival information is stored in the memory. Further comprising means,
2. The relay unit according to claim 1, wherein the relay unit distributes the new arrival information created by the new arrival information storage unit to all other front-end servers among the plurality of front-end servers and to the backup server. Relay server.   The relay server according to claim 1, wherein the memory is configured as a FIFO memory in a cache memory. A relay server that is communicably connected to a plurality of front-end servers that accept article postings from a user terminal, and that has a memory for storing new arrival information indicating that the posting has been accepted, is a method for delivering the new arrival information. ,
Receiving post information from any one of the plurality of front-end servers;
Creating the new arrival information from the received post information and storing the new arrival information in the memory;
Delivering the created new arrival information to all other front-end servers among the plurality of front-end servers;
Identifying a front-end server that does not hold the delivered new information;
Transmitting all the new arrival information stored in the memory to the identified front-end server;
A method comprising:

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