CN108063814B - Load balancing method and device - Google Patents
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- CN108063814B CN108063814B CN201711346499.1A CN201711346499A CN108063814B CN 108063814 B CN108063814 B CN 108063814B CN 201711346499 A CN201711346499 A CN 201711346499A CN 108063814 B CN108063814 B CN 108063814B
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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
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
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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
- H04L67/1004—Server selection for load balancing
- H04L67/101—Server selection for load balancing based on network conditions
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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
- H04L67/1004—Server selection for load balancing
- H04L67/1025—Dynamic adaptation of the criteria on which the server selection is based
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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
- H04L67/104—Peer-to-peer [P2P] networks
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Abstract
The application provides a load balancing method, which comprises the following steps: analyzing a server cluster identifier carried in the received message; determining a server cluster corresponding to the received message in the server system according to the server cluster identifier obtained by analysis; in the searched server cluster, judging whether the time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event, wherein the timing calculation event is in one-to-one correspondence with the searched server cluster; under the condition that the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the connection condition or flow condition of each server in the searched server cluster; and forwarding the received message to the target server.
Description
Technical Field
The present application relates to the field of computer network technologies, and in particular, to a load balancing method and apparatus.
Background
With the rapid development of network communication technology, the continuous deepening of internet application and the increasing abundance of carried information, the internet becomes an important infrastructure of human society, and network traffic, access volume and data show explosive growth. The computing power of the single server is quite high, and various clustering technologies are brought forward. For example, a server cluster is a server system that performs computing work by cooperating a group of servers with a high degree of compactness, and in a sense, they can be regarded as one server, and each server in the server cluster has an equivalent status, and can provide services to the outside independently without the assistance of other servers. In order to fully exert the performance of each server of the server cluster and improve the resource utilization rate and the operating efficiency, various load balancing algorithms are developed, such as a polling algorithm, a hash algorithm, a weighted polling algorithm, a minimum connection algorithm, a minimum bandwidth algorithm, and the like. In practical application, the current connection condition or flow condition of each server in a server cluster needs to be checked one by one, a target server with the least current effective connection number or flow in the server cluster is dynamically selected, and a received message is forwarded to the server. However, when a large number of servers exist in the server cluster, it takes a certain time to check the connection condition or the traffic condition of each server one by one to select a target server with the minimum number of currently effective connections or the minimum traffic, and the received message cannot be forwarded to the target server in time, which affects the processing performance of the load balancing device.
Disclosure of Invention
In view of the above, the present application provides a load balancing method and apparatus.
Specifically, the method is realized through the following technical scheme:
a method of load balancing, the method comprising:
analyzing a server cluster identifier carried in the received message;
determining a server cluster corresponding to the received message in the server system according to the server cluster identifier obtained by analysis;
in the searched server cluster, judging whether the time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event, wherein the timing calculation event is in one-to-one correspondence with the searched server cluster;
under the condition that the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the connection condition or flow condition of each server in the searched server cluster;
and forwarding the received message to the target server.
A load balancing apparatus, the apparatus comprising:
the identification analysis unit is used for analyzing the server cluster identification carried in the received message;
a server cluster determining unit, configured to determine, in the server system, a server cluster corresponding to the received message according to the server cluster identifier obtained through the analysis;
a judging unit, configured to judge whether time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event in the searched server cluster, where the timing calculation event corresponds to the searched server cluster one to one;
a target server calculating unit, configured to calculate a target server according to a connection condition or a traffic condition of each server in the searched server cluster when the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event;
and the message forwarding unit is used for forwarding the received message to the target server.
According to the technical scheme, the target server can be periodically calculated through the timing calculation event, the received message can be timely forwarded to the target server, and the processing performance of the load balancing equipment is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic diagram of an application scenario illustrated in an exemplary embodiment of the present application;
FIG. 2 is a flowchart illustrating one implementation of a load balancing method according to an exemplary embodiment of the present application;
FIG. 3 is a diagram illustrating obtaining a last calculation in accordance with an exemplary embodiment of the present application;
FIG. 4 is a diagram illustrating forwarding of a message to a target server in accordance with an exemplary embodiment of the present application;
fig. 5 is a schematic structural diagram of a load balancing apparatus according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
First, a load balancing method provided in an embodiment of the present application is described, where the method may include the following steps:
analyzing a server cluster identifier carried in the received message;
determining a server cluster corresponding to the received message in the server system according to the server cluster identifier obtained by analysis;
in the searched server cluster, judging whether the time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event, wherein the timing calculation event is in one-to-one correspondence with the searched server cluster;
under the condition that the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the connection condition or flow condition of each server in the searched server cluster;
and forwarding the received message to the target server.
In the background art, as shown in an application scenario diagram shown in fig. 1, when a large number of servers exist in a server cluster, connection conditions or traffic conditions of each server are checked one by one to select a target server with the minimum current effective connection number or the minimum traffic, a certain time is required, and a received message cannot be forwarded to the target server in time, so that the processing performance of a load balancing device is affected.
Specifically, in the process of forwarding the received message to a target server, a server cluster identifier carried in the received message, namely a target IP, a protocol and a target port, is analyzed; determining a server cluster corresponding to the received message in the server system according to the destination IP, the protocol and the destination port obtained by analysis; in the searched server cluster, judging whether the time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event, wherein the timing calculation event is in one-to-one correspondence with the searched server cluster; and under the condition that the accumulated time of the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the effective connection number or accumulated flow recorded by each server in the searched server cluster, and under the condition that the accumulated time of the preset time counter does not reach the preset calculation period of the timing calculation event, acquiring the server calculated according to the connection condition or flow condition of each server last time as the target server. For further explanation of the present application, the following examples are provided to illustrate the present application:
as shown in fig. 2, an implementation flowchart of the load balancing method of the present application may specifically include the following steps:
s101, analyzing a server cluster identifier carried in the received message;
in an embodiment, in the background art, with the rapid development of network communication technology, the continuous deepening of internet application, and the increasingly rich information carried, the internet has become an infrastructure of human society, network traffic, access amount, and data show explosive growth, the computing power of a single server has been caught, various cluster technologies are applied, and in order to fully exert the performance of each server of a server cluster and improve the resource utilization rate and the operating efficiency, various load balancing algorithms are applied, and corresponding load balancing devices are gradually improved. Therefore, for the load balancing device, when receiving a message, the received message needs to be distributed to each server in the server cluster in a balanced manner for processing. However, there are many types of existing server clusters, for example, Web server clusters, DNS server clusters, FTP server clusters, P2P server clusters, etc., when a load balancing device receives a message, it needs to determine to which server cluster the message is allocated, so that it needs to analyze a server cluster identifier carried in the received message, that is, a destination IP, a protocol, and a destination port in a header of the message, and generally only needs to analyze the above information, but the information of the analysis is not limited thereto. For example, when receiving the message 1, the destination IP of the header of the message 1 is 192.168.1.10, the protocol is the TCP/IP protocol, the destination port is 80, and the message 1 and the server cluster corresponding to the message 1 are determined according to the information of the header of the message 1 obtained by analysis.
S102, determining a server cluster corresponding to the received message in the server system according to the server cluster identification obtained by analysis;
in an embodiment, a server cluster corresponding to the received packet is determined in the server system according to the destination IP, the protocol, and the destination port obtained through the parsing. For example, the above-mentioned Web server cluster, DNS server cluster, FTP server cluster, P2P server cluster, etc., the destination IP of the packet header of the packet 1 is 192.168.1.10, the protocol is TCP/IP protocol, and the destination port is 80, and the packet 1 and the server cluster corresponding to the packet 1 are determined according to the information of the packet header of the packet 1 obtained by the analysis, and the packet 1 and the server cluster corresponding to the packet 1 are determined as the Web server cluster.
S103, judging whether the time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event in the searched server cluster, wherein the timing calculation event corresponds to the searched server cluster one by one;
in an embodiment, in the searched server cluster, it is determined whether the time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event, where the timing calculation event corresponds to the searched server cluster one to one. For example, the Web server cluster described above has a corresponding timed calculation event 1. And according to the effective connection number or the accumulated flow recorded by each server in the server cluster, when the effective connection number or the accumulated flow reaches a preset calculation period time node, calculating the target server with the minimum current effective connection number or the minimum accumulated flow, namely periodically calculating the target server with the minimum current effective connection number or the minimum accumulated flow according to the effective connection number or the minimum accumulated flow recorded by each server in the server cluster. The default calculation period of the timing calculation event is 2ms, and of course, other periods may be used by default, which is specific to the actual situation. It is therefore necessary to determine whether the time accumulated by the time counter corresponding to the timed calculation event has reached its preset calculation period, for example, the default calculation period of 2ms as described above. If the time accumulated by the time counter does not reach the preset calculation period of the timing calculation event, for example, the time accumulated by the time counter 1 corresponding to the timing calculation event 1 of the timing calculation event 1 described above does not reach the preset calculation period (2ms) of the timing calculation event 1, the last calculation result, that is, the target server 1 with the least number of effective connections or the least accumulated traffic calculated according to the number of effective connections or the accumulated traffic recorded by each server in the Web server cluster at the last time, is used, as shown in fig. 3.
The target server with the minimum effective connection number or the minimum accumulated flow calculated each time is stored in the corresponding server cluster, so that the server calculated last time is obtained as the target server of this time under the condition that the accumulated time of the time counter does not reach the preset calculation period of the timing calculation event.
S104, under the condition that the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the connection condition or the flow condition of each server in the searched server cluster;
in an embodiment, when the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event, a server with the minimum effective connection number or the minimum flow is calculated as a target server according to the effective connection number recorded by the connection number counter corresponding to each server in the searched server cluster or the accumulated flow recorded by the flow counter. For example, when the default calculation period 2ms of the timed calculation event 1 is reached by the time accumulated by the time counter 1 in the case of the default calculation period 2ms of the timed calculation event 1, based on the effective connection number recorded by the connection number counter corresponding to each server in the searched Web server cluster or the accumulated flow recorded by the flow counter, for example, the effective connection number recorded by the connection number counter corresponding to the server 1 is 10, the effective connection number recorded by the connection number counter corresponding to the server 2 is 8 … …, or the accumulated flow recorded by the flow counter corresponding to the server 1 is 10MB, the accumulated flow recorded by the flow counter corresponding to the server 2 is 8MB … …, and the server with the minimum effective connection number or the server with the minimum flow is calculated as the target server based on the above information. For example, the effective connection number recorded by the connection number counter corresponding to the server or the accumulated flow rate recorded by the flow counter may be sorted, where there are various sorting algorithms, such as fast sorting, etc., to select the server with the least effective connection number or the least flow rate as the target server.
And after the server with the minimum effective connection number or the minimum flow is calculated according to the information and is used as the target server, the time counter is reset, timing is started from 0, and therefore the server with the minimum effective connection number or the minimum flow is recalculated to be used as the target server when the next time node is calculated.
S105, forwarding the received message to the target server.
In one embodiment, after a server with the least number of effective connections or the least traffic is calculated as a target server, the received message is forwarded to the target server. For example, in the above-mentioned Web server cluster, in the server cluster, the target server is calculated to be the server 1 according to the effective connection number recorded by the connection number counter corresponding to each server or the accumulated flow rate recorded by the flow counter, and the received message 1 is forwarded to the server 1, so that the server 1 processes the message 1, as shown in fig. 4.
Through the steps, the target server is periodically calculated according to the effective connection number recorded by the connection number counter corresponding to each server or the accumulated flow recorded by the flow counter, so that the received message can be timely forwarded to the target server, and the processing performance of the load balancing equipment is greatly improved.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Corresponding to the foregoing load balancing method, the present application further provides an embodiment of a load balancing apparatus, as shown in fig. 5, including an identifier parsing unit 200, a server cluster determining unit 210, a determining unit 220, a target server computing unit 230, and a message forwarding unit 240.
The identifier analyzing unit 200 is configured to analyze a server cluster identifier carried in the received message;
the server cluster determining unit 210 is configured to determine, in the server system, a server cluster corresponding to the received message according to the server cluster identifier obtained through the analysis;
the determining unit 220 is configured to determine, in the searched server cluster, whether the time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event, where the timing calculation event corresponds to the searched server cluster one to one;
the target server calculating unit 230 is configured to calculate a target server according to a connection condition or a flow condition of each server in the searched server cluster when the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event;
the message forwarding unit 240 is configured to forward the received message to the target server.
In a specific embodiment of the present application, the identifier parsing unit is specifically configured to:
and analyzing the destination IP, the protocol and the destination port carried in the received message.
In one embodiment of the present application, the apparatus further comprises: server acquisition unit 250
The server obtaining unit 250 is configured to, when the time accumulated by the preset time counter does not reach a preset calculation period of the timing calculation event, obtain, as a target server, a server calculated last time according to a connection condition or a traffic condition of each server.
In an embodiment of the present application, the target server computing unit 230 is specifically configured to:
and under the condition that the accumulated time of the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the effective connection number recorded by the connection number counter corresponding to each server in the searched server cluster or the accumulated flow recorded by the flow counter.
In one embodiment of the present application, the apparatus further comprises: time counter reset unit 260
The time counter resetting unit 260 is configured to reset the preset time counter when the target server is calculated.
The implementation process of the functions of each unit in the system is specifically described in the implementation process of the corresponding step in the method, and is not described herein again.
For the system embodiment, since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment for relevant points. The above-described system embodiments are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
The invention may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The invention may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The foregoing is directed to embodiments of the present invention, and it is understood that various modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention.
Claims (8)
1. A load balancing method is characterized by being applied to a server system, wherein the server system comprises n groups of server clusters, each group of server clusters comprises m servers, n is more than or equal to 1, and m is more than or equal to 2, and the method comprises the following steps:
analyzing a server cluster identifier carried in the received message;
determining a server cluster corresponding to the received message in the server system according to the server cluster identifier obtained by analysis;
judging whether the time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event in the searched server cluster, wherein the timing calculation event corresponds to the searched server cluster one by one;
under the condition that the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the connection condition or flow condition of each server in the searched server cluster; forwarding the received message to the target server;
the method further comprises the following steps:
and under the condition that the time accumulated by the preset time counter does not reach the preset calculation period of the timing calculation event, acquiring the server calculated last time according to the connection condition or the flow condition of each server as a target server.
2. The method according to claim 1, wherein the analyzing the server cluster identifier carried in the received packet includes:
and analyzing the destination IP, the protocol and the destination port carried in the received message.
3. The method according to any one of claims 1 to 2, wherein the calculating a target server according to a connection condition or a flow condition of each server in the searched server cluster when the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event includes:
and under the condition that the accumulated time of the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the effective connection number recorded by the connection number counter corresponding to each server in the searched server cluster or the accumulated flow recorded by the flow counter.
4. The method of claim 3, further comprising:
and resetting the preset time counter when the target server is calculated.
5. A load balancing apparatus, the apparatus comprising:
the identification analysis unit is used for analyzing the server cluster identification carried in the received message;
a server cluster determining unit, configured to determine, in the server system, a server cluster corresponding to the received message according to the server cluster identifier obtained through the analysis;
a judging unit, configured to judge, in the searched server cluster, whether a time accumulated by a preset time counter reaches a preset calculation period of a timing calculation event, where the timing calculation event corresponds to the searched server cluster one to one;
a target server calculating unit, configured to calculate a target server according to a connection condition or a traffic condition of each server in the searched server cluster when the time accumulated by the preset time counter reaches a preset calculation period of a timing calculation event;
a message forwarding unit, configured to forward the received message to the target server;
the device further comprises: a server acquisition unit; and the server acquisition unit is used for acquiring the server which is calculated according to the connection condition or the flow condition of each server last time as the target server under the condition that the time accumulated by the preset time counter does not reach the preset calculation period of the timing calculation event.
6. The apparatus according to claim 5, wherein the identifier resolution unit is specifically configured to:
and analyzing the destination IP, the protocol and the destination port carried in the received message.
7. The apparatus according to any one of claims 5 to 6, wherein the target server computing unit is specifically configured to:
and under the condition that the accumulated time of the preset time counter reaches a preset calculation period of a timing calculation event, calculating a target server according to the effective connection number recorded by the connection number counter corresponding to each server in the searched server cluster or the accumulated flow recorded by the flow counter.
8. The apparatus of claim 7, further comprising: time counter reset unit
And the time counter resetting unit is used for resetting the preset time counter when the target server is calculated.
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| CN109005253B (en) | 2018-09-06 | 2021-08-17 | 中电科航空电子有限公司 | Network load balancing system |
| CN110381650A (en) * | 2019-04-11 | 2019-10-25 | 江苏南大先腾信息产业股份有限公司 | A kind of city illumination intelligent monitor system of street lamps based on single-lamp controller |
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| CN106850834A (en) * | 2017-03-01 | 2017-06-13 | 郑州云海信息技术有限公司 | A kind of service request method and apparatus and load equalizer |
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| CN104408106A (en) * | 2014-11-20 | 2015-03-11 | 浙江大学 | Scheduling method for big data inquiry in distributed file system |
| CN104902001A (en) * | 2015-04-07 | 2015-09-09 | 杭州电子科技大学 | Method for load balancing of Web requests based on operating system virtualization |
| CN106850834A (en) * | 2017-03-01 | 2017-06-13 | 郑州云海信息技术有限公司 | A kind of service request method and apparatus and load equalizer |
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