CN107071074A - A kind of load-balancing method and web server group system - Google Patents
A kind of load-balancing method and web server group system Download PDFInfo
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- CN107071074A CN107071074A CN201710521963.XA CN201710521963A CN107071074A CN 107071074 A CN107071074 A CN 107071074A CN 201710521963 A CN201710521963 A CN 201710521963A CN 107071074 A CN107071074 A CN 107071074A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
- H04L69/162—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
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Abstract
The invention discloses a kind of load-balancing method based on web server cluster and web server group system, web server cluster includes load equalizer and several web servers；When this method includes the operation of Client browse program, make client be set up with load equalizer and be connected；Load equalizer periodically sends synchronizing signal to each web server；Web server is received after synchronizing signal, returns to itself health data to load equalizer；Load equalizer is sent to client according to the IP that the health data and Dynamic Load-balancing Algorithm of each web server choose corresponding web server, set up and be connected with the web server according to IP for client, and send browse request to the web server and handled.The continuity browsed the invention enables user is strong, and reduces the situation appearance of the same content of cluster repeated retrieval, reduces cluster load.
Description
Technical field
The present invention relates to cluster management technical field, more particularly to a kind of load balancing based on web server cluster
Method.The invention further relates to a kind of web server group system.
Background technology
With the increase of number of clients and intensive task, rely solely on single web server and be difficult to meet user
Demand, it is therefore desirable to use web server group system, Web server group system refers to 2 or more than 2 web servers
Combine a kind of computer system that network service is provided to client, it uses load balancing, the client of arrival is asked
Certain server distributed in cluster is handled, and realizes by methods such as data redundancy and software detections the height of system
Availability.
In existing group system scheme, the granularity of most systems load balancing is one of data message, i.e. user
Request is provided by a server, and next request is then likely to be provided by another server, and this causes user browses interior
Hold randomness larger.It is related before and after the content that a user browses in some special web services (such as real-time curve is browsed)
Property it is very strong, and these contents are tended to collect in together in the database of web server, if responded by different servers same
The request of one user, can increase the workload of data retrieval, increase the load of system.
Therefore, how to provide it is a kind of ensure that continuity that user browses and reduce system load based on web services
The load-balancing method and web server group system of device cluster are the problem of those skilled in the art need solution at present.
The content of the invention
It is an object of the invention to provide a kind of load-balancing method based on web server cluster and web server cluster
System, the continuity that user browses is strong, and reduces the situation appearance of the same content of cluster repeated retrieval, reduces cluster and bears
Carry；It is a further object of the present invention to provide a kind of web server group system of the use above method.
In order to solve the above technical problems, the invention provides a kind of load-balancing method, based on web server cluster, institute
Stating web server cluster includes load equalizer and several web servers；Methods described includes：
When Client browse program is run, make the client be set up with the load equalizer and be connected；
The load equalizer periodically sends synchronizing signal to web server each described；
The web server is received after the synchronizing signal, returns to itself health data to the load equalizer；
Health data and Dynamic Load-balancing Algorithm of the load equalizer according to web server each described
The IP for choosing corresponding web server is sent to the client, is built for the client according to the IP with the web server
Connection is stood, and sends browse request to the web server and is handled.
Preferably, communicated between the load equalizer and the web server by socket web sockets.
Preferably, the health data includes server state information, performance data of server.
Preferably, the performance data specifically include CPU usage, memory usage, hard disc data conveying capacity per second with
And network data conveying capacity per second.
Preferably, health data and default load of the load equalizer according to web server each described
The IP of the corresponding web server of equalization algorithm selection, which is sent to the process of the client, is specially：
The load equalizer believes the server that the health data of each web server is stored in itself setting
Cease in table, update in the server info table the corresponding supplemental characteristic of each described web server；
Go out the web server of whole state normal operations according to the data screening in the server info table, and calculate
The load of each normal web server, the IP for choosing the web server of most lightly loaded is sent to the client.
In order to solve the above technical problems, present invention also offers a kind of web server group system, including load equalizer
And several web servers；
The load equalizer includes：
First link block, for when Client browse program is run, setting up and being connected with the client；
Synchronizing signal sending module, for periodically sending synchronizing signal to web server each described；
Data reception module, for receiving the health data that each described web server is returned, and is stored to shared
In internal memory；
Load balancing judging module, for the health data and dynamic load according to web server each described
The IP that equalization algorithm chooses corresponding web server is sent to the client, for the client according to the IP and the web
Server sets up connection, and sends browse request to the web server and handled；
The web server includes：
Signal receiving module, for receiving after the synchronizing signal, trigger data monitoring module；
The data monitoring module, for obtaining the health data of itself and sending to the data reception module.
Preferably, the data monitoring module is specifically included：
State monitoring unit, for obtaining the server state information of itself and sending to the data reception module；
Performance monitoring unit, for obtaining the performance data of server of itself and sending to the data reception module.
Preferably, the load balancing judging module is specifically included：
Data updating unit, for the health data of each web server to be stored in the shared drive
The corresponding supplemental characteristic of each described web server is updated in the server info table of setting；
Screening unit, the web for going out whole state normal operations according to the data screening in the server info table
Server；
Computing unit is loaded, the web server of most lightly loaded is chosen in the load for calculating each normal web server
IP send to the client.
Preferably, the load equalizer and the web server also include respectively：
Local processes monitoring module, for monitoring the kernel process state of the machine, and controls the kernel process to exist all the time
Internal memory is run.
The invention provides a kind of load-balancing method based on web server cluster, when Client browse program is run,
The load equalizer in its cluster is made to set up connection；Health data of the load equalizer according to each web server afterwards
And the IP of the corresponding web server of Dynamic Load-balancing Algorithm selection is sent to the client, client is direct according to the IP
Set up and be connected with the web server, whole browse requests of client can be handled by the web server afterwards.Can
See, the present invention realizes the load balancing that granularity is user, i.e., in the case of the non-failure of web server, make same client
Request handled by same web server response, this ensure that the continuity that user browses, and reduce cluster repetition
The workload of retrieval, reduces load.Present invention also offers a kind of web server group system based on the above method.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 for the present invention provide a kind of load-balancing method based on web server cluster structural representation/mistake
The flow chart of journey；
A kind of structural representation for web server group system that Fig. 2 provides for the present invention.
Embodiment
The core of the present invention is to provide a kind of load-balancing method based on web server cluster and web server cluster
System, the continuity that user browses is strong, and reduces the situation appearance of the same content of cluster repeated retrieval, reduces cluster and bears
Carry；Another core of the present invention is to provide a kind of web server group system of the use above method.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The invention provides a kind of load-balancing method, based on web server cluster, web server cluster includes load
Balanced device and several web servers；Shown in Figure 1, Fig. 1 is based on web server cluster for one kind that the present invention is provided
Load-balancing method structural representation/process flow chart；This method includes：
Step s1：When Client browse program is run, make client be set up with load equalizer and be connected；
Wherein, load equalizer here can be the computer for being configured with corresponding software, certainly, and the present invention does not limit soft
The particular content of part.
In addition, the software merit rating needs of several above-mentioned web servers are identical, that is, need to ensure their operation side
Method and the communication process between load equalizer are all identical.
Step s2：Load equalizer periodically sends synchronizing signal to each web server；
Step s3：Web server is received after synchronizing signal, returns to itself health data to load equalizer；
Step s4：Health data and Dynamic Load-balancing Algorithm of the load equalizer according to each web server
The IP for choosing corresponding web server is sent to client, is set up and is connected with the web server according to IP for client, concurrently
Browse request to the web server is sent to be handled.
Wherein, above-mentioned health data includes server state information, performance data of server.
Here server state information generally refers to the process data in web server, and the process data is described
Whether the system core process in web server is run, only when load equalizer receive in certain web server institute it is relevant
During the information that key process is all normally run, just think that this web server can provide a user service, otherwise it is assumed that the web
Server failure, it is impossible to which service is provided.
It is further known that, performance data here specifically includes CPU usage, memory usage, hard disc data per second biography
The amount of sending and network data conveying capacity per second.
Certainly, preferred scheme is these are only, performance data, which is alternatively other, can characterize the parameter group of web server performance
Close.
Preferably, communicated between load equalizer and web server by socket web sockets.
It is understood that Socket is built upon a kind of communication equipment on transport layer protocol (mainly TCP and UDP)
System, it defines the specification that two intercomputers are communicated.Socket shields bottom communication software and specific operating system
Difference so that any two communications for being mounted with Transmission Control Protocol software and realizing between the computer of socket specification turn into
May.Therefore this communication means that the system is used can be used among most mainstream operation system.Permitted compared to current
The scheme of the strong server cluster of many specificitys, applicability of the invention is more preferable.
It is further known that, during being communicated using socket, two socket are run on load equalizer
Service processes, the workflow of the service processes is：
Call function Socket creates socket；
Bind is called to bind this grade of address；
Listen is called to intercept the connection request of web server；
Call Accept to create a new socket to service for the web server, a subprocess or line are generated afterwards
Journey specially communicates with this web server.
The workflow of the subprocess communicated with web server or thread is：
Send is called to send synchronizing signal；
RECV is called to receive the data that web server is transmitted；
When web server terminates connection, terminate subprocess.If the connection of other Web server requests, is generated simultaneously
Other sockets and process are communicated with, and method is identical, are repeated no more.
Meanwhile, two socket client process, the workflow of the client process are separately operable on each Web server
Cheng Shi：
Call function SOCKET creates socket；
CONNECT is called to set up the connection with the service processes on load equalizer；
Receive synchronizing signal；
Calculating the machine performance, (client process is used to calculate performance data, and another client process is used to calculate state
Information), and obtained result is passed into load equalizer.
In a preferred embodiment, step s4 process is specially：
The health data of each web server is stored in the server info table of itself setting by load equalizer,
Update the corresponding supplemental characteristic of each web server in server info table；
Go out the web server of whole states and the equal normal operation of process according to the data screening in server info table, and
The load of each normal web server is calculated, the IP for choosing the web server of most lightly loaded is sent to client.
Wherein, the IP of each web server, and the corresponding parameters of each IP are specifically included in the server info table
Data are initially disposed as 0.Load equalizer periodically obtains the health data of each web server, and according to this
A little data update the relevant parameter data in server info table.
Specifically, for the server state in server info table, if load equalizer judges corresponding web server
Failure or the information that can not receive correspondence web server, then it is 0 to make corresponding server state, if normally, order is corresponding
Server state be 1；Only need to afterwards by judging whether server state is 0, you can determine corresponding web services
Device whether failure.
Certainly, a kind of specific embodiment is these are only, clothes can also be characterized by defining a unsigned integer variables
It is engaged in device state, concrete mode is：
One 1-65535 cycle counter is set.Cycle counter initial value is 1, and load equalizer is often received once
The data of each web server, then counter timing Jia 1, when Counter Value is 65535, after setting Jia 1 again, counter
Value is changed into 1.After the health data of each web server is obtained, if load equalizer judges corresponding web server event
Barrier or the information that can not receive correspondence web server, then it is 0 to make corresponding server state, otherwise, then makes corresponding clothes
Current value of the device status items of being engaged in for cycle counter；If the value and cycle counter of web server status number afterwards
Value is identical, it is believed that server normal work, if it is different, thinking that the web server fails, is write its server state as zero,
And remove it from group system.
Certainly, it is specifically to distinguish the whether normal of web server with upper type, it is ensured that the high availability of system, because
This can use any of the above mode, or can also use other implementations, and the present invention is not especially limited to this.
In addition, this invention takes Dynamic Load-balancing Algorithm.Can be with calling system api function in Windows systems
Method obtains properties data, in linux system, can obtain properties number by reading the method for proc files
According to.
In addition, Dynamic Load-balancing Algorithm is specially by the performance data and Qi Ge of the Web server of all normal operations
Self-corresponding a reference value, which is weighted, to be compared, and thus judges that the load of the minimum web server of acquired results is minimum.
The invention provides a kind of load-balancing method based on web server cluster, when Client browse program is run,
The load equalizer in its cluster is made to set up connection；Health data of the load equalizer according to each web server afterwards
And the IP of the corresponding web server of Dynamic Load-balancing Algorithm selection is sent to the client, client is direct according to the IP
Set up and be connected with the web server, whole browse requests of client can be handled by the web server afterwards.Can
See, the present invention realizes the load balancing that granularity is user, i.e., in the case of the non-failure of web server, make same client
Request handled by same web server response, this ensure that the continuity that user browses, and reduce cluster repetition
The workload of retrieval, reduces load.
It is shown in Figure 2 present invention also offers a kind of web server group system, one kind that Fig. 2 provides for the present invention
The structural representation of web server group system.The system includes load equalizer 1 and several web servers 2；
Load equalizer 1 includes：
First link block 11, for when Client browse program is run, setting up and being connected with client；
Synchronizing signal sending module 12, for periodically sending synchronizing signal to each web server 2；
Data reception module 13, for receiving the health data of each web server 2 return, and is stored to shared
In internal memory 14；
Load balancing judging module 15, it is equal for the health data and dynamic load according to each web server 2
The IP of the weighing apparatus corresponding web server 2 of algorithm picks is sent to client, is set up and is connected with the web server 2 according to IP for client
Connect, and send browse request to the web server 2 and handled；
Web server 2 includes：
Signal receiving module 21, for receiving after synchronizing signal, trigger data monitoring module；
Data monitoring module 22, for obtaining the health data of itself and sending to data reception module.
Wherein, data monitoring module 22 is specifically included：
State monitoring unit, for obtaining the server state information of itself and sending to data reception module；
Performance monitoring unit, for obtaining the performance data of server of itself and sending to data reception module.
In addition, load balancing judging module is specifically included：
Data updating unit, for the health data of each web server 2 to be stored in into the clothes set in shared drive
It is engaged in updating each corresponding supplemental characteristic of web server 2 in device information table；
Screening unit, the web services for going out whole state normal operations according to the data screening in server info table
Device 2；
Computing unit is loaded, the web server of most lightly loaded is chosen in the load for calculating each normal web server 2
2 IP is sent to client.
Preferably, load equalizer 1 and web server 2 also include respectively：
Local processes monitoring module, the kernel process state for monitoring the machine, and control core process is all the time in internal memory
Operation.
It is understood that by ensureing that some important processes of the machine can be avoided as far as possible bearing with memory-resident
Carry balanced device 1 and web server 2 causes to damage due to the improper operation of user.
The invention provides a kind of web server group system, when Client browse program is run, make negative in its cluster
Carry balanced device and set up connection；Load equalizer is equal according to the health data and dynamic load of each web server afterwards
The IP of the weighing apparatus corresponding web server of algorithm picks is sent to the client, and client is directly built according to the IP with the web server
Vertical connection, whole browse requests of client can be handled by the web server afterwards.It can be seen that, the present invention is realized
Granularity is the load balancing of user, i.e., in the case of the non-failure of web server, make the request of same client by same
Web server response is handled, this ensure that the continuity that user browses, and the workload of cluster repeated retrieval is reduced, subtract
Small load.
Two kinds of embodiments above are only the preferred embodiment of the present invention, it is noted that led for this technology
For the those of ordinary skill in domain, under the premise without departing from the principles of the invention, some improvement can also be made, these improvement
It should be regarded as protection scope of the present invention.
It should also be noted that, in this manual, term " comprising ", "comprising" or its any other variant are intended to contain
Lid nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. a kind of load-balancing method, based on web server cluster, it is characterised in that the web server cluster includes load
Balanced device and several web servers；Methods described includes：
When Client browse program is run, make the client be set up with the load equalizer and be connected；
The load equalizer periodically sends synchronizing signal to web server each described；
The web server is received after the synchronizing signal, returns to itself health data to the load equalizer；
The load equalizer is chosen according to the health data and Dynamic Load-balancing Algorithm of web server each described
The IP of corresponding web server is sent to the client, is set up and is connected according to the IP and the web server for the client
Connect, and send browse request to the web server and handled.
2. according to the method described in claim 1, it is characterised in that lead between the load equalizer and the web server
Socket web sockets are crossed to be communicated.
3. according to the method described in claim 1, it is characterised in that the health data include server state information,
Performance data of server.
4. method according to claim 3, it is characterised in that the performance data, which specifically includes CPU usage, internal memory, to be made
With rate, hard disc data conveying capacity per second and network data conveying capacity per second.
5. the method according to claim any one of 1-4, it is characterised in that the load equalizer is according to described in each
The IP that the health data of web server and default load-balancing algorithm choose corresponding web server is sent to described
The process of client is specially：
The health data of each web server is stored in the server info table of itself setting by the load equalizer
It is interior, update in the server info table the corresponding supplemental characteristic of each described web server；
Go out the web server of whole state normal operations according to the data screening in the server info table, and calculate each
The load of normal web server, the IP for choosing the web server of most lightly loaded is sent to the client.
6. a kind of web server group system, it is characterised in that including load equalizer and several web servers；
The load equalizer includes：
First link block, for when Client browse program is run, setting up and being connected with the client；
Synchronizing signal sending module, for periodically sending synchronizing signal to web server each described；
Data reception module, for receiving the health data that each described web server is returned, and is stored to shared drive
It is interior；
Load balancing judging module, for the health data and dynamic load leveling according to web server each described
The IP of the corresponding web server of algorithm picks is sent to the client, for the client according to the IP and the web services
Device sets up connection, and sends browse request to the web server and handled；
The web server includes：
Signal receiving module, for receiving after the synchronizing signal, trigger data monitoring module；
The data monitoring module, for obtaining the health data of itself and sending to the data reception module.
7. system according to claim 6, it is characterised in that the data monitoring module is specifically included：
State monitoring unit, for obtaining the server state information of itself and sending to the data reception module；
Performance monitoring unit, for obtaining the performance data of server of itself and sending to the data reception module.
8. the system according to claim 6 or 7, it is characterised in that the load balancing judging module is specifically included：
Data updating unit, is set for the health data of each web server to be stored in the shared drive
Server info table in update the corresponding supplemental characteristic of each described web server；
Screening unit, the web services for going out whole state normal operations according to the data screening in the server info table
Device；
Computing unit is loaded, the IP of the web server of most lightly loaded is chosen in the load for calculating each normal web server
Send to the client.
9. system according to claim 8, it is characterised in that the load equalizer and web server difference
Also include：
Local processes monitoring module, for monitoring the kernel process state of the machine, and controls the kernel process all the time in internal memory
Operation.
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| CN109842651B (en) * | 2017-11-27 | 2021-11-26 | 中国移动通信集团上海有限公司 | Uninterrupted service load balancing method and system |
| CN109842665A (en) * | 2017-11-29 | 2019-06-04 | 北京京东尚科信息技术有限公司 | Task processing method and device for task distribution server |
| CN109842665B (en) * | 2017-11-29 | 2022-02-22 | 北京京东尚科信息技术有限公司 | Task processing method and device for task allocation server |
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| CN109995839B (en) * | 2018-01-02 | 2021-11-19 | 中国移动通信有限公司研究院 | Load balancing method, system and load balancer |
| CN109920513A (en) * | 2019-03-13 | 2019-06-21 | 安徽紫薇帝星数字科技有限公司 | A kind of medical image three-dimensional diagosis based on artificial intelligence proposed algorithm and surgical guidance system |
| CN111556126A (en) * | 2020-04-24 | 2020-08-18 | 杭州浮云网络科技有限公司 | Model management method, system, computer device and storage medium |
| CN112015568A (en) * | 2020-07-06 | 2020-12-01 | 尚特杰电力科技有限公司 | Method and system for realizing remote upgrading of RTU (remote terminal Unit) and parallel configuration of multiple threads |
| CN116107913A (en) * | 2023-04-06 | 2023-05-12 | 阿里云计算有限公司 | Test control method, device and system of single-node server |
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Application publication date: 20170818 |