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CN101808118A - Access method, device and system of server - Google Patents

Access method, device and system of server Download PDF

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Publication number
CN101808118A
CN101808118A CN201010116742A CN201010116742A CN101808118A CN 101808118 A CN101808118 A CN 101808118A CN 201010116742 A CN201010116742 A CN 201010116742A CN 201010116742 A CN201010116742 A CN 201010116742A CN 101808118 A CN101808118 A CN 101808118A
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client
server
load balancing
target server
http redirection
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苑鸿剑
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Inspur Beijing Electronic Information Industry Co Ltd
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Inspur Beijing Electronic Information Industry Co Ltd
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Abstract

本发明提供了一种服务器访问方法、装置和系统。涉及计算机领域；解决了客户端通过四层负载均衡访问服务器时资源浪费、效率低的问题。该方法包括：负载均衡调度器根据客户端发送的客户请求中的应用层用户信息，为所述客户端选择目标服务器；所述负载均衡调度器指示所述客户端直接访问所述目标服务器。本发明提供的技术方案适用于网络四层的负载均衡。

Figure 201010116742

The invention provides a server access method, device and system. It involves the computer field; it solves the problem of resource waste and low efficiency when the client accesses the server through four-layer load balancing. The method includes: the load balancing scheduler selects a target server for the client according to the application layer user information in the client request sent by the client; the load balancing scheduler instructs the client to directly access the target server. The technical solution provided by the invention is suitable for the load balancing of the four layers of the network.

Figure 201010116742

Description

The server access methods, devices and systems
Technical field
The present invention relates to computer realm, relate in particular to a kind of server access methods, devices and systems.
Background technology
The develop rapidly of Internet brings great challenge for the network bandwidth and server.From development of internet technology, the growth of the network bandwidth is far above the growth of processor speed and internal storage access speed, the demand of, high available network services scalable at height, provided at present load balance scheduling solution based on IP layer and content-based request distribution, and in linux kernel, realized these methods, one group of server is constituted realization is telescopic, the virtual server of high available network services.Each server in the virtual server by at a high speed local area network (LAN) or the wide area network of geographical distribution interconnect, at their front end a load balance scheduler (Load Balancer) is arranged.Load balance scheduler can seamlessly be dispatched to the client requests that is sent to virtual server on each server, thereby make that the structure of server cluster is transparent to the client, the network service that the client access group system provides is just as high-performance of visit, high available server.At present, comparatively general load-balancing method is to finish scheduling to server in transport layer.
Realizing the client by in the process of virtual server access server resource, there are the following problems:
Owing to only transmit according to IP address and port in transport layer, this forwarding is blindly, and must be arranged to the background server content in full accordly, has wasted server resource, and system works efficient is low.
Summary of the invention
The invention provides a kind of server access methods, devices and systems, the wasting of resources when having solved client, inefficient problem by the four-layer load-equalizing access server.
A kind of server access method comprises:
Load balance scheduler is described client select target server according to the application layer user profile in the client requests of client transmission;
Described load balance scheduler is indicated the directly described destination server of visit of described client.
Further, described load balance scheduler indicates the described destination server of the direct visit of described client to comprise:
Described load balance scheduler generates the HTTP redirection instruction according to the application layer user profile in the described client requests, the address of carrying described destination server in described HTTP redirection instruction;
Described load balance scheduler sends described HTTP redirection instruction to described client, indicates the directly described destination server of visit of described client.
Further, described load balance scheduler is according to the application layer user profile in the client requests of client transmission, for described client select target server comprises:
Described load balance scheduler obtains at least one server that corresponding service is provided according to described application layer user profile;
From described at least one server, select the lighter server of load as destination server.
The present invention also provides a kind of server access method, comprising:
Client sends client requests to load balance scheduler, carries the application layer user profile of described client in described client requests;
Described client receives the HTTP redirection instruction that described load balance scheduler responds described client requests, the address of carrying destination server in described HTTP redirection instruction;
Described client sends client requests according to the address of described destination server to described destination server.
The present invention also provides a kind of load balance scheduler, comprising:
Server is selected module, and the application layer user profile according in the client requests of client transmission is described client select target server;
Indicating module is used to indicate the directly described destination server of visit of described client.
Further, described server selects module to comprise:
The scope determining unit is used for obtaining at least one server that corresponding service is provided according to described application layer user profile;
Select performance element, be used for, select the lighter server of load as destination server from described at least one server.
Further, described indicating module comprises:
The instruction generation unit is used for the application layer user profile according to described client requests, generates the HTTP redirection instruction, the address of carrying described destination server in described HTTP redirection instruction;
Instruction issues the unit, is used for sending described HTTP redirection instruction to described client, indicates the directly described destination server of visit of described client.
The present invention also provides a kind of client, comprising:
The command reception module is used to receive the HTTP redirection instruction, the address of carrying destination server in described HTTP redirection instruction;
The client requests sending module is used for sending client requests to load balance scheduler, carries the application layer user profile of described client in described client requests; Or,
After described command reception module receives the HTTP redirection instruction,, send client requests to described destination server according to the address of described destination server.
The present invention also provides a kind of server access system, comprises load balance scheduler and client;
Described load balance scheduler is used for the application layer user profile according to the client requests of client transmission, is described client select target server, and indicates the directly described destination server of visit of described client;
Described client, be used for sending client requests to load balance scheduler, in described client requests, carry the application layer user profile of described client, receive the HTTP redirection instruction that described load balance scheduler sends, the address of in described HTTP redirection instruction, carrying destination server, and, send client requests to described destination server according to the address of described destination server.
Embodiments of the invention provide a kind of server access method, device and system, when load balance scheduler receives the client requests of client transmission, at first extract the user profile in this client requests, generate corresponding HTTP redirection instruction according to user profile, the address of in this HTTP redirection instruction, carrying destination server, send described HTTP redirection instruction to described client then, indicate the directly described destination server of visit of described client, client is after receiving this HTTP redirection instruction, will be according to the address of wherein destination server, destination server is conducted interviews, realized dynamic load leveling to client requests, improved server access efficient, the unbalanced problem of server load when having solved client by the four-layer load-equalizing access server.
Description of drawings
The flow chart of a kind of server access method that Fig. 1 provides for embodiments of the invention;
Fig. 2 is the particular flow sheet of step 102 among Fig. 1;
The structural representation of a kind of load balance scheduler that Fig. 3 provides for embodiments of the invention;
Fig. 4 is the structural representation that server is selected module 301 among Fig. 3;
Fig. 5 is the structural representation of indicating module 302 among Fig. 3;
The structural representation of a kind of client that Fig. 6 provides for embodiments of the invention;
The structural representation of a kind of server access system that Fig. 7 provides for embodiments of the invention.
Embodiment
When realizing client by four-layer load-equalizing to the visit of server, can't learn the content of user in the application layer input, so can only be arranged to the content that is in a plurality of servers in the same SiteServer LBS in full accord, client requests is transmitted according to IP and port by load balance scheduler, system flexibility is poor, has wasted server resource.
In order to address the above problem, embodiments of the invention provide a kind of server access method, use this method to finish to the flow process of server access as shown in Figure 1, comprising:
Step 101, load balance scheduler receive the client requests that client sends;
In this step, client sends client requests to load balance scheduler, asks the business in this load balance scheduler place virtual server.In this client requests, carry application layer user profile, user profile comprises keyword, file suffixes of client requests content etc.
Step 102, load balance scheduler be according to client requests, the select target server;
This step comprises specifically as shown in Figure 2:
Step 1021, described load balance scheduler obtain at least one server that corresponding service is provided according to the application layer user profile in the described client requests;
In this step, load balance scheduler is determined the type of service of client requests according to application layer user profile, and then determines to provide at least one server of this business.
Step 1022, from described at least one server, select the lighter server of load as destination server;
In this step, the load state of each server that load balance scheduler detection step 1021 is obtained, and select the lighter server of load as destination server, for client provides professional.
Step 103, load balance scheduler generate and send the HTTP redirection instruction to described client, indicate the directly described destination server of visit of described client;
In this step, load balance scheduler generates the HTTP redirection instruction according to the destination server of determining in the step 102, and the address of carrying destination server in this instruction sends to client with this HTTP redirection instruction.
Step 104, client send client requests according to the address of described destination server to described destination server;
In this step, client receives described HTTP redirection instruction, according to the address of the destination server that wherein carries, sends client requests to destination server, and when after this needing to use professional that this destination server provides, directly send client requests to this destination server.
In addition,, can be equipped with a backup machine, realize two-node cluster hot backup for each server for the enhanced system reliability.
Because the embodiment of the invention can be carried out load balancing at the user profile of application layer, thus can be with each server institute loaded service granularity refinement, and each server also is improved to the treatment effeciency of client requests.
Embodiments of the invention also provide a kind of load balance scheduler, and its structure comprises as shown in Figure 3:
Server is selected module 301, and the application layer user profile according in the client requests of client transmission is described client select target server;
Indicating module 302 is used to indicate the directly described destination server of visit of described client.
Further, the structure of described server selection module 301 comprises as shown in Figure 4:
Scope determining unit 3011 is used for obtaining at least one server that corresponding service is provided according to described application layer user profile;
Select performance element 3012, be used for, select the lighter server of load as destination server from described at least one server.
Further, the structure of described indicating module 302 comprises as shown in Figure 5:
Instruction generation unit 3021 is used for the application layer user profile according to described client requests, generates the HTTP redirection instruction, the address of carrying described destination server in described HTTP redirection instruction;
Instruction issues unit 3022, is used for sending described HTTP redirection instruction to described client, indicates the directly described destination server of visit of described client.
Embodiments of the invention also provide a kind of client, and its structure comprises as shown in Figure 6:
Command reception module 601 is used to receive the HTTP redirection instruction, the address of carrying destination server in described HTTP redirection instruction;
Client requests sending module 602 is used for sending client requests to load balance scheduler, carries the application layer user profile of described client in described client requests; Or,
After described command reception module receives the HTTP redirection instruction,, send client requests to described destination server according to the address of described destination server.
Embodiments of the invention also provide a kind of server access system, and its structure comprises load balance scheduler 701 and client 702 as shown in Figure 7;
Described load balance scheduler 701 is used for the application layer user profile according to the client requests of client 702 transmissions, is described client 720 select target servers, and indicates the directly described destination server of visit of described client 702;
Described client 702, be used for sending client requests to load balance scheduler 701, in described client requests, carry the application layer user profile of described client 702, receive the HTTP redirection instruction that described load balance scheduler 701 sends, the address of in described HTTP redirection instruction, carrying destination server, and, send client requests to described destination server according to the address of described destination server.
Above-mentioned load balance scheduler, the client and server access system, can combine with a kind of server access method that embodiments of the invention provide, when load balance scheduler receives the client requests of client transmission, at first extract the user profile in this client requests, generate corresponding HTTP redirection instruction according to user profile, the address of in this HTTP redirection instruction, carrying destination server, send described HTTP redirection instruction to described client then, indicate the directly described destination server of visit of described client, client is after receiving this HTTP redirection instruction, will be according to the address of wherein destination server, destination server is conducted interviews, realized dynamic load leveling to client requests, improved server access efficient, the unbalanced problem of server load when having solved client by the four-layer load-equalizing access server.
One of ordinary skill in the art will appreciate that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the described protection range of claim.

Claims (9)

1.一种服务器访问方法，其特征在于，包括：1. A server access method, characterized in that, comprising: 负载均衡调度器根据客户端发送的客户请求中的应用层用户信息，为所述客户端选择目标服务器；The load balancing scheduler selects a target server for the client according to the application layer user information in the client request sent by the client; 所述负载均衡调度器指示所述客户端直接访问所述目标服务器。The load balancing scheduler instructs the client to directly access the target server. 2.根据权利要求1所述的服务器访问方法，其特征在于，所述负载均衡调度器指示所述客户端直接访问所述目标服务器包括：2. The server access method according to claim 1, wherein the load balancing scheduler instructing the client to directly access the target server comprises: 所述负载均衡调度器根据所述客户请求中的应用层用户信息，生成HTTP重定向指令，在所述HTTP重定向指令中携带所述目标服务器的地址；The load balancing scheduler generates an HTTP redirection instruction according to the application layer user information in the client request, and carries the address of the target server in the HTTP redirection instruction; 所述负载均衡调度器向所述客户端发送所述HTTP重定向指令，指示所述客户端直接访问所述目标服务器。The load balancing scheduler sends the HTTP redirection instruction to the client, instructing the client to directly access the target server. 3.根据权利要求1所述的负载均衡方法，其特征在于，所述负载均衡调度器根据客户端发送的客户请求中的应用层用户信息，为所述客户端选择目标服务器包括：3. The load balancing method according to claim 1, wherein the load balancing scheduler selects a target server for the client according to the application layer user information in the client request sent by the client, comprising: 所述负载均衡调度器根据所述应用层用户信息，获取提供相应业务的至少一个服务器；The load balancing scheduler obtains at least one server that provides corresponding services according to the application layer user information; 从所述至少一个服务器中，选择负载较轻的服务器作为目标服务器。From the at least one server, select a server with a lighter load as the target server. 4.一种服务器访问方法，其特征在于，包括：4. A server access method, characterized in that, comprising: 客户端向负载均衡调度器发送客户请求，在所述客户请求中携带有所述客户端的应用层用户信息；The client sends a client request to the load balancing scheduler, and the client request carries the application layer user information of the client; 所述客户端接收所述负载均衡调度器响应所述客户请求的HTTP重定向指令，在所述HTTP重定向指令中携带目标服务器的地址；The client receives the HTTP redirection instruction that the load balancing scheduler responds to the client request, and carries the address of the target server in the HTTP redirection instruction; 所述客户端根据所述目标服务器的地址，向所述目标服务器发送客户请求。The client sends a client request to the target server according to the address of the target server. 5.一种负载均衡调度器，其特征在于，包括：5. A load balancing scheduler, characterized in that, comprising: 服务器选择模块，根据客户端发送的客户请求中的应用层用户信息，为所述客户端选择目标服务器；The server selection module selects a target server for the client according to the application layer user information in the client request sent by the client; 指示模块，用于指示所述客户端直接访问所述目标服务器。an instructing module, configured to instruct the client to directly access the target server. 6.根据权利要求5所述的负载均衡调度器，其特征在于，所述服务器选择模块包括：6. The load balancing scheduler according to claim 5, wherein the server selection module comprises: 范围确定单元，用于根据所述应用层用户信息，获取提供相应业务的至少一个服务器；a range determining unit, configured to acquire at least one server that provides corresponding services according to the application layer user information; 选择执行单元，用于从所述至少一个服务器中，选择负载较轻的服务器作为目标服务器。The selection execution unit is configured to select, from the at least one server, a server with a lighter load as the target server. 7.根据权利要求5所述的负载均衡调度器，其特征在于，所述指示模块包括：7. The load balancing scheduler according to claim 5, wherein the indication module comprises: 指令生成单元，用于根据所述客户请求中的应用层用户信息，生成HTTP重定向指令，在所述HTTP重定向指令中携带所述目标服务器的地址；An instruction generation unit, configured to generate an HTTP redirection instruction according to the application layer user information in the client request, and carry the address of the target server in the HTTP redirection instruction; 指令下发单元，用于向所述客户端发送所述HTTP重定向指令，指示所述客户端直接访问所述目标服务器。An instruction issuing unit, configured to send the HTTP redirection instruction to the client, instructing the client to directly access the target server. 8.一种客户端，其特征在于，包括：8. A client, characterized in that, comprising: 指令接收模块，用于接收HTTP重定向指令，在所述HTTP重定向指令中携带目标服务器的地址；An instruction receiving module, configured to receive an HTTP redirection instruction, carrying the address of the target server in the HTTP redirection instruction; 客户请求发送模块，用于向负载均衡调度器发送客户请求，在所述客户请求中携带有所述客户端的应用层用户信息；或，A client request sending module, configured to send a client request to the load balancing scheduler, wherein the client request carries the application layer user information of the client; or, 在所述指令接收模块接收到HTTP重定向指令后，根据所述目标服务器的地址，向所述目标服务器发送客户请求。After the instruction receiving module receives the HTTP redirection instruction, it sends a client request to the target server according to the address of the target server. 9.一种服务器访问系统，其特征在于，包括负载均衡调度器和客户端；9. A server access system, comprising a load balancing scheduler and a client; 所述负载均衡调度器，用于根据客户端发送的客户请求中的应用层用户信息，为所述客户端选择目标服务器，并指示所述客户端直接访问所述目标服务器；The load balancing scheduler is configured to select a target server for the client according to the application layer user information in the client request sent by the client, and instruct the client to directly access the target server; 所述客户端，用于向负载均衡调度器发送客户请求，在所述客户请求中携带有所述客户端的应用层用户信息，接收所述负载均衡调度器发送的HTTP重定向指令，在所述HTTP重定向指令中携带目标服务器的地址，并根据所述目标服务器的地址，向所述目标服务器发送客户请求。The client is configured to send a client request to the load balancing scheduler, the client request carries the application layer user information of the client, receives the HTTP redirection instruction sent by the load balancing scheduler, and sends the request to the load balancing scheduler. The address of the target server is carried in the HTTP redirection instruction, and the client request is sent to the target server according to the address of the target server.
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