CN109104500A - A kind of server load balancing method and device of dynamic adjustment - Google Patents
A kind of server load balancing method and device of dynamic adjustment Download PDFInfo
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- CN109104500A CN109104500A CN201811153455.1A CN201811153455A CN109104500A CN 109104500 A CN109104500 A CN 109104500A CN 201811153455 A CN201811153455 A CN 201811153455A CN 109104500 A CN109104500 A CN 109104500A
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- load balancer
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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
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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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Abstract
The invention discloses a kind of server load balancing method and devices of dynamic adjustment, applied to load balancer and the server cluster being connected with the load balancer, the method includes at least following steps: the current connection number and response speed for each server that real-time monitoring is connected with the load balancer, and according to the service application, current connection number and response speed of configuration, the installation of each server, the processing capacity of each server is analyzed；To the Servers-all in server cluster according to processing capacity by being arranged in a wheel priority query to weak by force；When load balancer receives service request, the server that the service request is sequentially allocated to current highest priority in the priority query is handled；Above-mentioned steps are repeated, form a new wheel priority to column, wait-for-response service request.The present invention can well solve existing load balancing technology and lack the problem of carrying out the ability of dynamic adjustment according to the real-time disposition of server.
Description
Technical field
The present invention relates to cluster server fields, and in particular to a kind of the server load balancing method and dress of dynamic adjustment
It sets.
Background technique
Load-balancing technique is widely used in server cluster, by independent load balancing software or hardware, according to setting
Service request is distributed to server different in cluster by fixed load balancing, reaches the processing of integrity service device cluster
Balanced purpose.
The load balancing generallyd use at present is all based on the principle passively shared equally, such as polling schemas (Round-
), or the polling schemas with weight (eighted Round-Robin) Robin.These balance policy technologies assume that cluster
In each server there is similar processing capacity, and each server performance is irregular in cluster in practical application, and dynamic
Variation.Secondly, existing balance policy technology lacks the ability for carrying out dynamic adjustment according to the real-time disposition of server.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that providing a kind of server load balancing side of dynamic adjustment
Method and device can well solve existing load balancing technology and lack according to the real-time disposition progress dynamic of server
The problem of ability of adjustment.
To solve the above problems, one embodiment of the present of invention provides a kind of server load balancing side of dynamic adjustment
Method includes at least following steps applied to load balancer and the server cluster being connected with the load balancer:
The current connection number and response speed for each server that real-time monitoring is connected with the load balancer, and root
According to the service application, current connection number and response speed of configuration, the installation of each server, the processing of each server is analyzed
Ability；
To the Servers-all in server cluster according to processing capacity by being arranged in a wheel priority query to weak by force；
When load balancer receives service request, the service request is sequentially allocated in the priority query
The server of current highest priority is handled；
Above-mentioned steps are repeated, form a new wheel priority to column, wait-for-response service request.
Further, the Servers-all in server cluster is according to processing capacity by being arranged in a wheel to weak by force
Priority query, specifically:
According to the different disposal ability of each server, different weights is distributed, each server is enable to receive accordingly
The service request of weight number, and priority arrangement, formation processing are carried out to the Servers-all in server cluster according to weight
Ability is by by force to a weak wheel priority query.
Further, described when load balancer receives service request, the service request is sequentially allocated to institute
The server for stating current highest priority in priority query is handled, specifically:
When load balancer receives service request, according to the transmission sequence of server request, by the service
Request is successively added to service request to column tail portion；
Since the service request is to the head of column, sequentially the service request distributes to the service request in column
The server of current highest priority is handled in the priority query.
Further, the processing capacity of each server refer to the response service request of each server when
Between, i.e. response time.
Further, the server load balancing method of dynamic adjustment, further includes:
When detecting the server delay machine being connected with the load balancer, rejecting from server cluster automatically should
Server, and after server normal work, Auto-reconnect.
Another embodiment of the invention also provides a kind of server load balancing device of dynamic adjustment, comprising:
Monitoring modular, the current connection number for each server being connected with the load balancer for real-time monitoring and
Response speed, and according to the service application, current connection number and response speed of configuration, the installation of each server, analysis is every
The processing capacity of a server；
Priority query's generation module, for the Servers-all in server cluster according to processing capacity by by force to weak
It is arranged in a wheel priority query；
Service request distribution module, for when load balancer receives service request, successively by the service request
The server for distributing to current highest priority in the priority query is handled.
Further, priority query's generation module, specifically for the different disposal ability according to each server, distribution
Different weights enables each server to receive the service request of corresponding weight value number, and according to weight in server cluster
Servers-all carry out priority arrangement, form processing capacity by taking turns priority query to weak one by force.
Further, service request distribution module, specifically for when load balancer receives service request, according to institute
The service request is successively added to service request to column tail portion by the transmission sequence for stating server request；
Since the service request is to the head of column, sequentially the service request distributes to the service request in column
The server of current highest priority is handled in the priority query.
Further, the processing capacity of each server refer to the response service request of each server when
Between, i.e. response time.
Further, the server load balancing device of dynamic adjustment, further includes:
Monitoring modular is also used to when detecting the server delay machine being connected with the load balancer, automatically from clothes
The server is rejected in business device cluster, and after server normal work, Auto-reconnect.
The implementation of the embodiments of the present invention has the following beneficial effects:
A kind of server load balancing method and device of dynamic adjustment provided in an embodiment of the present invention, it is equal to be applied to load
Weighing apparatus and the server cluster being connected with the load balancer, the method include at least following steps: real-time monitoring with
The current connection number and response speed for each server that the load balancer is connected, and matching according to each server
Service application, current connection number and the response speed set, installed, analyze the processing capacity of each server；To server set
Servers-all in group is according to processing capacity by being arranged in a wheel priority query to weak by force；Clothes are received in load balancer
When business request, the service request is sequentially allocated in the priority query at the server of current highest priority
Reason；Above-mentioned steps are repeated, form a new wheel priority to column, wait-for-response service request.The present invention can be well
Solve the problems, such as that existing load balancing technology lacks the ability that dynamic adjustment is carried out according to the real-time disposition of server.
Detailed description of the invention
Fig. 1 is that a kind of process of the server load balancing method for dynamic adjustment that one embodiment of the present of invention provides is shown
It is intended to；
Fig. 2 be another embodiment of the present invention provides one embodiment of the present of invention provide a kind of dynamic adjustment
The structural schematic diagram of server load balancing device.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of server load balancing method for dynamic adjustment that one embodiment of the present of invention provides, is answered
For load balancer and the server cluster being connected with the load balancer, following steps are included at least:
The current connection number and response speed for each server that S101, real-time monitoring are connected with the load balancer
Degree, and according to the service application, current connection number and response speed of configuration, the installation of each server, analyze each service
The processing capacity of device；
S102, to the Servers-all in server cluster according to processing capacity by being arranged in a wheel priority team to weak by force
Column；
S103, when load balancer receives service request, the service request is sequentially allocated to the priority
The server of current highest priority is handled in queue；
Above-mentioned steps are repeated, form a new wheel priority to column, wait-for-response service request.
In the present embodiment, one priority query of load balancer internal maintenance (Priority Queue), by service
Device processing capacity to weak sequence by being ranked up by force, in this way, load balancer distributes request from the priority query every time
In successively to obtain average processing power most strong, i.e., response and time the smallest server address are distributed, until in queue
Server uses, and repeats the process, achievees the purpose that dynamic optimization load balancing.
Wherein, the Servers-all in server cluster is according to processing capacity by be arranged in a wheel preferential to weak by force
Grade queue, specifically:
According to the different disposal ability of each server, different weights is distributed, each server is enable to receive accordingly
The service request of weight number, and priority arrangement, formation processing are carried out to the Servers-all in server cluster according to weight
Ability is by by force to a weak wheel priority query.
In this example, it is assumed that configured using Nginx load balancing, it is as follows:
So, according to above-mentioned configuration, Nginx often receives the request of 7 clients, can be transmitted to rear end 1 therein
A, is transmitted to rear end b 2 therein, is transmitted to rear end c 4 therein.
It is understood that the present embodiment is using Weighted Round Robin as a result, seeking to generate a server series.
Whenever having request to arrive, next server is just successively taken out from the sequence for handling the request.Such as above
Example, Weighted Round Robin can formation sequence { c, c, b, c, a, b, c }.In this way, the request of 7 clients is often received, it can handle
1 therein is transmitted to rear end a, is transmitted to rear end b 2 therein, is transmitted to rear end c 4 therein.The 8th received
A request, the again poll since the head of the sequence.
Therefore, Weighted Round Robin will generate a server series, include n server in the sequence.N is all clothes
The sum of the weight of business device.In the sequence, the number of the appearance of each server is equal to its weighted value.Also, the sequence generated
In, the distribution of server should as far as possible uniformly.Such as in sequence { a, a, a, a, a, b, c }, first five request can all be distributed
Server a is given, here it is a kind of non-uniform distribution method, better sequence should be: { a, a, b, a, c, a, a }.
Preferably, in order to achieve the purpose that dynamic optimization load balancing, load balancer real-time monitoring is born with described
The current connection number and response speed of each server that balanced device is connected are carried, and according to the configuration of each server, installation
Service application, current connection number and response speed, analyze the processing capacity of each server.
Wherein, described when load balancer receives service request, the service request is sequentially allocated to described excellent
The server of current highest priority is handled in first grade queue, specifically:
When load balancer receives service request, according to the transmission sequence of server request, by the service
Request is successively added to service request to column tail portion；
Since the service request is to the head of column, sequentially the service request distributes to the service request in column
The server of current highest priority is handled in the priority query.
Wherein, the processing capacity of each server refers to the time of the response service request of each server, i.e.,
Response time.
In a preferred embodiment of the invention, the server load balancing method of dynamic adjustment, further includes:
When detecting the server delay machine being connected with the load balancer, rejecting from server cluster automatically should
Server, and after server normal work, Auto-reconnect.
In the present embodiment, load-balancing algorithm will be used together with health examination algorithm.The work of health examination algorithm
With being exactly to carry out survival and health detection to all servers, see that whether being provided to load balancing selects.If one
The service of platform machine there is a problem that health examination will remove this machine from service list, allow load-balancing algorithm
It can't see the presence of this machine.
That is, in specific Weighted Round Robin, when health examination algorithm detects that the state of certain server is become
Change, such as from UP to DOWN, or otherwise when, just will be updated weight, recalculate result sequence.
A kind of server load balancing method of dynamic adjustment provided in this embodiment, real-time monitoring and the load balancing
The current connection number and response speed for each server that device is connected, and the business of configuration, the installation according to each server
Using, current connection number and response speed, the processing capacity of each server is analyzed；To all services in server cluster
Device is according to processing capacity by being arranged in a wheel priority query to weak by force；When load balancer receives service request, by institute
It states service request and is sequentially allocated and handled to the server of current highest priority in the priority query；It repeats
Step is stated, forms a new wheel priority to column, wait-for-response service request.According to above-mentioned steps, the present embodiment can be fine
Ground solves the problems, such as that existing load balancing technology lacks the ability that dynamic adjustment is carried out according to the real-time disposition of server.
Another embodiment of the invention also provides a kind of server load balancing device of dynamic adjustment, comprising:
Monitoring modular 201, the current connection for each server that real-time monitoring is connected with the load balancer
Several and response speed, and according to the service application, current connection number and response speed of configuration, the installation of each server, divide
Analyse the processing capacity of each server；
Priority query's generation module 202, for the Servers-all in server cluster according to processing capacity by strong
A wheel priority query is arranged in weak；
Service request distribution module 203, for when load balancer receives service request, by the service request according to
Sub-distribution is handled to the server of current highest priority in the priority query.
In the present embodiment, one priority query of load balancer internal maintenance (Priority Queue), by service
Device processing capacity to weak sequence by being ranked up by force, in this way, load balancer distributes request from the priority query every time
In successively to obtain average processing power most strong, i.e., response and time the smallest server address are distributed, until in queue
Server uses, and repeats the process, achievees the purpose that dynamic optimization load balancing.
Further, priority query's generation module 202, specifically for the different disposal ability according to each server,
Different weights is distributed, so that each server is received the service request of corresponding weight value number, and according to weight to server set
Servers-all in group carries out priority arrangement, forms processing capacity by by force to a weak wheel priority query.
In this example, it is assumed that configured using Nginx load balancing, it is as follows:
So, according to above-mentioned configuration, Nginx often receives the request of 7 clients, can be transmitted to rear end 1 therein
A, is transmitted to rear end b 2 therein, is transmitted to rear end c 4 therein.
It is understood that the present embodiment is using Weighted Round Robin as a result, seeking to generate a server series.
Whenever having request to arrive, next server is just successively taken out from the sequence for handling the request.Such as above
Example, Weighted Round Robin can formation sequence { c, c, b, c, a, b, c }.In this way, the request of 7 clients is often received, it can handle
1 therein is transmitted to rear end a, is transmitted to rear end b 2 therein, is transmitted to rear end c 4 therein.The 8th received
A request, the again poll since the head of the sequence.
Therefore, Weighted Round Robin will generate a server series, include n server in the sequence.N is all clothes
The sum of the weight of business device.In the sequence, the number of the appearance of each server is equal to its weighted value.Also, the sequence generated
In, the distribution of server should as far as possible uniformly.Such as in sequence { a, a, a, a, a, b, c }, first five request can all be distributed
Server a is given, here it is a kind of non-uniform distribution method, better sequence should be: { a, a, b, a, c, a, a }.
Preferably, in order to achieve the purpose that dynamic optimization load balancing, load balancer real-time monitoring is born with described
The current connection number and response speed of each server that balanced device is connected are carried, and according to the configuration of each server, installation
Service application, current connection number and response speed, analyze the processing capacity of each server.
Preferably, service request distribution module 203, specifically for when load balancer receives service request, according to
The service request is successively added to service request to column tail portion by the transmission sequence of the server request；
Since the service request is to the head of column, sequentially the service request distributes to the service request in column
The server of current highest priority is handled in the priority query.
Preferably, the processing capacity of each server refers to the time of the response service request of each server,
That is the response time.
Preferably, the server load balancing device of dynamic adjustment, further includes:
Monitoring modular 201 is also used to when detecting the server delay machine being connected with the load balancer, automatically from
The server is rejected in server cluster, and after server normal work, Auto-reconnect.
In the present embodiment, load-balancing algorithm will be used together with health examination algorithm.The work of health examination algorithm
With being exactly to carry out survival and health detection to all servers, see that whether being provided to load balancing selects.If one
The service of platform machine there is a problem that health examination will remove this machine from service list, allow load-balancing algorithm
It can't see the presence of this machine.
That is, in specific Weighted Round Robin, when health examination algorithm detects that the state of certain server is become
Change, such as from UP to DOWN, or otherwise when, just will be updated weight, recalculate result sequence.
A kind of server load balancing device of dynamic adjustment provided in this embodiment, passes through real-time monitoring and the load
The current connection number and response speed for each server that balanced device is connected, and according to the configuration of each server, installation
Service application, current connection number and response speed, analyze the processing capacity of each server；To all in server cluster
Server is according to processing capacity by being arranged in a wheel priority query to weak by force；When load balancer receives service request,
The server that the service request is sequentially allocated to current highest priority in the priority query is handled；Repetition is held
Row above-mentioned steps form a new wheel priority to column, wait-for-response service request, so as to well solve existing load
Balance policy technology lacks the problem of carrying out the ability of dynamic adjustment according to the real-time disposition of server.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principle of the present invention, several improvement and deformations can also be made, these improvement and deformations are also considered as
Protection scope of the present invention.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Claims (10)
1. a kind of server load balancing method of dynamic adjustment, is applied to load balancer and is connected with the load balancer
The server cluster connect, which is characterized in that include at least following steps:
The current connection number and response speed for each server that real-time monitoring is connected with the load balancer, and according to every
Service application, current connection number and the response speed of configuration, the installation of a server, analyze the processing energy of each server
Power；
To the Servers-all in server cluster according to processing capacity by being arranged in a wheel priority query to weak by force；
When load balancer receives service request, the service request is sequentially allocated to current in the priority query
The server of highest priority is handled；
Above-mentioned steps are repeated, form a new wheel priority to column, wait-for-response service request.
2. the server load balancing method of dynamic adjustment according to claim 1, which is characterized in that described to server
Servers-all in cluster according to processing capacity by being arranged in a wheel priority query to weak by force, specifically:
According to the different disposal ability of each server, different weights is distributed, each server is enable to receive corresponding weight value
Several service requests, and priority arrangement is carried out to the Servers-all in server cluster according to weight, form processing capacity
By by force to a weak wheel priority query.
3. the server load balancing method of dynamic adjustment according to claim 1, which is characterized in that described equal in load
When weighing apparatus receives service request, the service request is sequentially allocated to current highest priority in the priority query
Server is handled, specifically:
When load balancer receives service request, according to the transmission sequence of server request, by the service request
Service request is successively added to column tail portion；
Since the service request is to the head of column, sequentially the service request distributes to the service request in column described
The server of current highest priority is handled in priority query.
4. the server load balancing method of dynamic adjustment according to claim 1, which is characterized in that each service
The processing capacity of device refers to the time of the response service request of each server, i.e. response time.
5. the server load balancing method of dynamic adjustment according to claim 1, which is characterized in that further include:
When detecting the server delay machine being connected with the load balancer, the service is rejected from server cluster automatically
Device, and after server normal work, Auto-reconnect.
6. a kind of server load balancing device of dynamic adjustment characterized by comprising
Monitoring modular, current connection number and response for each server that real-time monitoring is connected with the load balancer
Speed, and according to the service application, current connection number and response speed of configuration, the installation of each server, analyze each clothes
The processing capacity of business device；
Priority query's generation module, for the Servers-all in server cluster according to processing capacity by by force to weak arrangement
At a wheel priority query；
Service request distribution module, for when load balancer receives service request, the service request to be sequentially allocated
It is handled to the server of current highest priority in the priority query.
7. the server load balancing device of dynamic adjustment according to claim 6, which is characterized in that priority query is raw
Different weights is distributed specifically for the different disposal ability according to each server at module, each server is enable to connect
Priority arrangement, shape are carried out to the Servers-all in server cluster by the service request of corresponding weight value number, and according to weight
At processing capacity by by force to a weak wheel priority query.
8. the server load balancing device of dynamic adjustment according to claim 6, which is characterized in that service request distribution
Module, specifically for when load balancer receives service request, the transmission sequence requested according to the server will be described
Service request is successively added to service request to column tail portion；
Since the service request is to the head of column, sequentially the service request distributes to the service request in column described
The server of current highest priority is handled in priority query.
9. the server load balancing device of dynamic adjustment according to claim 6, which is characterized in that each service
The processing capacity of device refers to the time of the response service request of each server, i.e. response time.
10. the server load balancing device of dynamic adjustment according to claim 6, which is characterized in that further include:
Monitoring modular is also used to when detecting the server delay machine being connected with the load balancer, automatically from server
The server is rejected in cluster, and after server normal work, Auto-reconnect.
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