CN105426285B - The method and apparatus of database connection pool monitoring and management - Google Patents
The method and apparatus of database connection pool monitoring and management Download PDFInfo
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- CN105426285B CN105426285B CN201510710159.7A CN201510710159A CN105426285B CN 105426285 B CN105426285 B CN 105426285B CN 201510710159 A CN201510710159 A CN 201510710159A CN 105426285 B CN105426285 B CN 105426285B
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- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3055—Monitoring arrangements for monitoring the status of the computing system or of the computing system component, e.g. monitoring if the computing system is on, off, available, not available
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Abstract
The invention discloses a kind of method and apparatus of database connection pool monitoring and management, wherein the method for database connection pool monitoring and management includes the steps that obtaining database connects the free time ratio that the average connection handling capacity of upper SQL statement is connected with database；And when receiving using database connection request is obtained, according to the average connection handling capacity and free time ratio of above-mentioned acquisition, database connection number and release database connection number are allocated according to MAX management parameters distribution policy, and according to the maximum number of connections and MaxIdleTime initial value of peak traffic adjust automatically connection pool, return to using the step of.Achieve the purpose that database connection resource is avoided to waste.
Description
Technical field
The present invention relates to field of database management, and in particular, to a kind of method of database connection pool monitoring and management
And device.
Background technique
With the growth of Internet service, the trading volume of system is increased, and system processing pressure increases, database manipulation
Bottleneck start to show.The management of operation for database, database connection resource is extremely important.If database connection money
Source can various dimensions monitor and reasonably distribution and management, then can effectively promote the operating efficiency of database.It is existing to answer
Database connection resource is managed usually using database connection pool with system.Currently, database connection pool mainly have with
Lower deficiency:
1, the monitoring of database connection pool is single.Whether existing database connection pool is occupied only for the connection of database
With being monitored.If database connection is applied (some thread) to occupy, which cannot operate (line by other application
Journey) it uses, connection pool thinks that database connection is busy at this time.However, the data manipulation that the database of the occupancy connects may
And infrequently, it so that the access pressure of database and little at this time, does not need actually to create new database and connects to improve
Efficiency.Secondly MaxIdleTime(maximum idle time) it is just recovered after idle connection time-out, free time is longer, monitoring
It is single to cause resource that discharge in time.Therefore, the monitoring mechanism of database connection is single, causes database connection resource unrestrained
Take.
2, database connection pool allocation rule is single, is not efficient enough.Traditional database connection pool includes that connection number is maximum
It is worth (MAX) and two parameters of initial value (INIT).If at this time trading volume peak value arrive, database connection pool connection soon
Connection occupies, it is necessary to could discharge when waiting database manipulations complete or connection time-out, it is easy to cause database connection inadequate
With.The connection number management of database is not reasonable, inflexible, effective.Secondly initial value (INIT) does not have to be also to make for a long time
At the waste of connection resource.
Summary of the invention
It is an object of the present invention in view of the above-mentioned problems, propose a kind of monitoring of database connection pool and management method and
Device, to realize the advantages of avoiding database connection resource from wasting.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of method of database connection pool monitoring and management, the company of being averaged of upper SQL statement is connected including obtaining database
The step of connecing the free time ratio that handling capacity is connected with database connection pool；
And
When receiving using database connection request is obtained, according to the average connection handling capacity of above-mentioned acquisition and free time
Than being allocated database connection number and release database connection number according to MAX management parameters distribution policy, and according to business height
The maximum number of connections and maximum idle time (MaxIdleTime) initial value of peak adjust automatically connection pool, return to using
The step of.
Preferably, the free time ratio that the database connection pool connects is, according to the submission time of SQL statement and return
Time records the processing time and free time of SQL statement, is calculated according to the processing time of SQL statement and free time.
It preferably, further include that above-mentioned averagely connection handling capacity compares with the average connection throughput threshold of setting
Step, the average connection handling capacity such as obtained are greater than the average connection throughput threshold of setting, then it is assumed that database connection is busy；
If the average connection handling capacity obtained is less than the average connection throughput threshold of the setting, then it is assumed that database connection is not numerous
It is busy；
And the step of free time of above-mentioned acquisition compares than the free time with setting than threshold values, as obtained
Free time, it is larger that database of descriptions connects pressure than being less than the free time set than threshold values；If the free time obtained
Than being greater than the free time set than threshold values, it is smaller that database of descriptions connects current pressure.
Preferably, the MAX management parameters distribution policy specially averagely connects handling capacity and free time according to above-mentioned
Formula, decision tree or regulation engine are formed than combination, and is connected according to the formula of formation, decision tree or regulation engine allocation database
It connects.
Preferably, the formula of formation specifically:
V=V1*a+V2 *b
A, b is the weight of parameters, and V1, which is represented, averagely connects handling capacity, and V2 represents free time ratio, if V is greater than 0
It is increased by connection, connection is reduced if V is less than 0.
Technical solution of the present invention also discloses a kind of monitoring of database connection pool and managing device, including monitoring module simultaneously
With connection pool management module,
The monitoring module, monitoring data library connects the average connection handling capacity of upper SQL statement and database connection pool connects
The free time ratio connect；
The connection pool management module receives the acquisition database connection request of application, and obtains and monitor from monitoring module
Data are allocated database connection number and release database connection number according to MAX management parameters distribution policy, and according to business
The maximum number of connections and MaxIdleTime initial value of peak adjust automatically connection pool, return to using.
Preferably, the free time ratio that the database connection pool connects is, according to the submission time of SQL statement and return
Time records the processing time and free time of SQL statement, is calculated according to the processing time of SQL statement and free time.
Preferably, the monitoring module, by the above-mentioned average connection throughput threshold phase for averagely connecting handling capacity and setting
Compare, the average connection handling capacity such as obtained is greater than the average connection throughput threshold of setting, then it is assumed that database connection is busy；
If the average connection handling capacity obtained is less than the average connection throughput threshold of the setting, then it is assumed that database connection is not numerous
It is busy；
And the free time of above-mentioned acquisition is compared than the free time with setting than threshold values, such as obtain free time when
Between than the free time less than setting than threshold values, it is larger that database of descriptions connects pressure；If the free time ratio obtained is greater than
The free time of setting, it is smaller that database of descriptions connects current pressure than threshold values.
Preferably, the MAX management parameters distribution policy specially averagely connects handling capacity and free time according to above-mentioned
Formula, decision tree or regulation engine are formed than combination, and is connected according to the formula of formation, decision tree or regulation engine allocation database
It connects.
Preferably, the formula of formation specifically:
V=V1*a+V2 *b
A, b is the weight of parameters, and V1, which is represented, averagely connects handling capacity, and V2 represents free time ratio, if V is greater than 0
It is increased by connection, connection is reduced if V is less than 0.
Technical solution of the present invention has the advantages that
Technical solution of the present invention connects database by being monitored to average connection handling capacity and free time ratio
The monitoring of row various dimensions is tapped into, so that the busy extent of database is accurately grasped, thus using the connection resource of database, and it is sharp
It is allocated database connection number and release database connection number with MAX management parameters distribution policy, database minimum is avoided to swash
Connection number (INIT) living setting results in waste of resources greatly very much, what too small and no meaning is arranged, and the technical program joins INIT
Number removes, and connection is just founded when connecting using database, connection is just discharged when connecting without using database.Reach and has kept away
Exempt from the purpose of database connection resource waste.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the functional block diagram of the monitoring and managing device of database connection pool described in the embodiment of the present invention；
Fig. 2 is the database connection distribution schematic diagram described in the embodiment of the present invention using the prior art；
Fig. 3 is the database connection distribution schematic diagram described in the embodiment of the present invention using technical solution of the present invention.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
A kind of method of database connection pool monitoring and management, the company of being averaged of upper SQL statement is connected including obtaining database
The step of connecing the free time ratio that handling capacity is connected with database connection pool；
And
When receiving using database connection request is obtained, according to the average connection handling capacity of above-mentioned acquisition and free time
Than being allocated database connection number and release database connection number according to MAX management parameters distribution policy, and according to business height
The maximum number of connections and MaxIdleTime initial value of peak adjust automatically connection pool, return to using the step of.
The free time ratio of database connection pool connection is to record SQL according to the submission time of SQL statement and time of return
The processing time of sentence and free time are calculated according to the processing time of SQL statement and free time.
As shown in Figure 1, a kind of database connection pool monitoring and managing device, include monitoring module and connection pool management module,
Wherein: monitoring module carries out various dimensions monitoring to database connection and hardware resource, obtains monitoring data.Simultaneously
The application request for receiving connection pool management module, by monitored results, returns to connection pool management module for monitoring data.
The data of monitoring module monitoring are specifically, monitoring data library connects the average connection handling capacity of upper SQL statement
(QPS).
The QPS that staqtistical data base averagely connects.QPS is equal to sql sentence number/60s/ that database connection is submitted in one minute
Connection number
Average connection statistics QPS is greater than some threshold value, such as: 30 sql/s, then it is assumed that database connection is busy；If small
In the threshold value, such as: 30 sql/s, then it is assumed that database connection is not just busy.
The free time ratio (big affairs scene) of monitoring data library connection pool connection.
According to the processing time and free time of the submission time of SQL and time of return record SQL, computation-free time
Than.
Free time ratio=free time/total time.If free time ratio be less than some threshold value, such as: 30%, illustrate be
Database connection pressure of uniting is larger；If free time ratio is greater than some threshold value, such as: 30%, the current pressure of database of descriptions connection
Power is smaller.
Free time is as follows:
| _ _ _ _ _ _ data manipulation _ _ _ _ _ | _ _ free time _ _ | _ _ _ _ _ _ data manipulation _ _ _ _ _ | _ _ free time _ _ |,
Connection pool management module, connection pool management module are responsible for management and the MAX management parameters distribution policy of connection pool.
Connection pool management module receives the acquisition database connection request of application, takes monitoring data from monitoring module, manages according to MAX
Reason parameter distribution policy is allocated database connection number and release database connection number, and is connected according to peak traffic adjust automatically
The maximum number of connections and MaxIdleTime initial value for connecing pond, return to using.
MAX management parameters distribution policy is specific as follows: it is combined according to than 2 groups data of QPS and free time above
Form a formula, decision tree or regulation engine.The two parameters have the relationship of interaction, if qps parameter is busy, distribution
Connection.If qps sees free time ratio not busy.
Such as formula is as follows:
V=V1*a+V2 *b
As soon as V is that a value is greater than and 0 is increased by connection, if connecting less than 0 reduction.Subsequent a, b are exactly parameters
Weight, these weights can be decided by vote with the expert investigation method of weighting.V1, V2 respectively represent QPS and free time ratio.
Decision tree (Decision Tree) is a kind of simple but widely used classifier.It is constructed by training data
Decision tree can efficiently classify to unknown data.Decision number has two big advantages: 1) decision-tree model can the property read
It is good, have descriptive, facilitates manual analysis；2) high-efficient, decision tree only needs once to construct, Reusability, each time in advance
The max calculation number of survey is no more than the depth of decision tree.
Regulation engine is developed by inference engine, is a kind of component being embedded in the application, is realized business
Decision is separated from application code, and writes operational decision making using predefined semantic modules.Receive data input,
It explains business rule, and operational decision making is made according to rule.
Technical solution of the present invention is illustrated below in conjunction with specific embodiment:
If an application distributes 50 database connections, business requests 50 threads simultaneously under peak traffic.If
Using existing database connection pool mode, MaxIdleTime is 50 seconds.So 50 databases are connected while being occupied full, only
It can just be discharged Deng connecting after 50 seconds, business is occupied in 50 threads of coming in and connected using all database after 51 seconds, it is necessary to
Deng can just discharge after 50 seconds, then database server is not busy in 100 seconds, but 50 databases connections are by for a long time
It occupies, 50 database connection number processing capacities are not busy, that is, 50 database connection number link busy extents utilize
Rate is very low, and connection is occupied for a long time, as shown in Figure 2.
After technical solution of the present invention, after 50 business threads are come according to monitoring single link processing QPS or
Person's free time ratio can't immediately take 50 database connection numbers, can also continue to found connection, until 50 data
Library connection exhausts, and the link of 50 databases connection at this time is very busy, its processing capacity utilization rate ratio tradition
Link processing ability is higher.Secondly adjust automatically MaxIdleTime parameter value, allows the database released to connect and answers to other
With using.It is illustrated in fig. 3 shown below.
Can clearly it find out with Fig. 3 according to fig. 2, the technical solution of the present invention releasing idling time is more than existing way, number
It is less (having used 5 connections that the whole processing of request have been in 2s) according to library request connection number.
Technical solution of the present invention can dynamically adjust maximum number of connections (MAX value) and the free time of connection pool
(MaxIdleTime), so as to more effectively being connected using database.Such as, when the connection of connection pool existing database is busy,
First adjustment increase MAX value, thus database connection processing capacity increase: further according to database connection it is busy to a certain extent when
It reallocates and connects, ensure that database connection utilizes validity: the dynamic adjustment free time when pressure is little
(MaxIdleTime) with the connection of quick release database.
In conclusion the invention has the characteristics that:
1, the present invention is exactly that the monitoring module of scheme can connect the handling capacity (QPS) of upper SQL statement with monitoring data library,
The free time ratio of database connection pool connection.When an application it is either multiple using a database when, in system
Data base link can be used sufficiently when amount, avoid the waste of database connection number.Short time when peak traffic is avoided to create too
Multiple database connection, gives database server excessive connection pressure, even results in server delay machine.
2, it is compared with existing database connection pool, it can be counted using QPS when peak.
3, adjust automatically MaxIdleTime parameter value allows the database released to connect and uses to other application.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of method of database connection pool monitoring and management, which is characterized in that connect upper SQL statement including obtaining database
Average connection handling capacity connected with database connection pool free time ratio the step of；
And
When receiving using database connection request is obtained, according to the average connection handling capacity and free time ratio of above-mentioned acquisition,
It is allocated database connection number and release database connection number according to MAX management parameters distribution policy, and according to peak traffic
The maximum number of connections and maximum idle time initial value of adjust automatically connection pool, return to using the step of；
The step of further including, above-mentioned averagely connection handling capacity is compared with the average connection throughput threshold of setting, such as obtains
Average connection handling capacity be greater than setting average connection throughput threshold, then it is assumed that database connection it is busy；If obtained
Averagely average connection throughput threshold of the connection handling capacity less than the setting, then it is assumed that database connection is not busy；
And the step of free time of above-mentioned acquisition compares than the free time with setting than threshold value, the sky such as obtained
Than the free time less than setting than threshold value between idle, it is larger that database of descriptions connects pressure；If the free time ratio obtained
Greater than setting free time than threshold value, it is smaller that database of descriptions connects current pressure；
The MAX management parameters distribution policy specially averagely connects handling capacity and free time than combination formation according to above-mentioned
Formula, decision tree or regulation engine, and connected according to the formula of formation, decision tree or regulation engine allocation database.
2. the method for database connection pool monitoring and management according to claim 1, which is characterized in that the database connects
The free time ratio for connecing pond connection is, according to the processing time of the submission time of SQL statement and time of return record SQL statement
And free time, it is calculated according to the processing time of SQL statement and free time.
3. the method for database connection pool monitoring and management according to claim 1, which is characterized in that the formula of formation has
Body are as follows:
V=V1*a+V2 *b
A, b is the weight of parameters, and V1, which is represented, averagely connects handling capacity, and V2 represents free time ratio, is increased if V is greater than 0
Add connection, connection is reduced if V is less than 0.
4. a kind of monitoring of database connection pool and managing device, which is characterized in that including monitoring module and connection pool management module,
The monitoring module, what the average connection handling capacity that monitoring data library connects upper SQL statement was connected with database connection pool
Free time ratio；
The connection pool management module receives the acquisition database connection request of application, and obtains monitoring data from monitoring module,
It is allocated database connection number and release database connection number according to MAX management parameters distribution policy, and according to peak traffic
The maximum number of connections and maximum idle time initial value of adjust automatically connection pool, return to using；
Above-mentioned averagely connection handling capacity is compared with the average connection throughput threshold of setting, is such as obtained by the monitoring module
Average connection handling capacity be greater than setting average connection throughput threshold, then it is assumed that database connection it is busy；If obtained
Averagely average connection throughput threshold of the connection handling capacity less than the setting, then it is assumed that database connection is not busy；
And the free time of above-mentioned acquisition compares than the free time with setting than threshold value, the free time ratio such as obtained
Less than setting free time than threshold value, it is larger that database of descriptions connects pressure；If the free time ratio obtained is greater than setting
Free time than threshold value, it is smaller that database of descriptions connects current pressure；
The MAX management parameters distribution policy specially averagely connects handling capacity and free time than combination formation according to above-mentioned
Formula, decision tree or regulation engine, and connected according to the formula of formation, decision tree or regulation engine allocation database.
5. database connection pool monitoring according to claim 4 and managing device, which is characterized in that the database connection
The free time ratio of pond connection is, according to the processing time and sky of the submission time of SQL statement and time of return record SQL statement
Between idle, it is calculated according to the processing time of SQL statement and free time.
6. database connection pool monitoring according to claim 4 and managing device, which is characterized in that the formula of formation is specific
Are as follows:
V=V1*a+V2 *b
A, b is the weight of parameters, and V1, which is represented, averagely connects handling capacity, and V2 represents free time ratio, is increased if V is greater than 0
Add connection, connection is reduced if V is less than 0.
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| CN108255825A (en) * | 2016-12-28 | 2018-07-06 | ***通信集团江西有限公司 | For dynamically distributing the method and apparatus of database connection |
| CN109284311B (en) * | 2018-08-14 | 2020-10-23 | 四川虹美智能科技有限公司 | Method and device for acquiring database connection |
| CN109684397A (en) * | 2018-12-24 | 2019-04-26 | 广东亿迅科技有限公司 | Based on influx dB database connection pool and management method |
| CN110471773A (en) * | 2019-08-21 | 2019-11-19 | 广州趣丸网络科技有限公司 | A kind of connection pool dispatching method and device |
| CN115328978B (en) * | 2022-06-27 | 2023-11-17 | 光大环境科技（中国）有限公司 | Connection method of connection pool and server |
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