CN110019487A - A kind of database connection management method and device - Google Patents
A kind of database connection management method and device Download PDFInfo
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- CN110019487A CN110019487A CN201810936951.8A CN201810936951A CN110019487A CN 110019487 A CN110019487 A CN 110019487A CN 201810936951 A CN201810936951 A CN 201810936951A CN 110019487 A CN110019487 A CN 110019487A
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- connection request
- weighted value
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/25—Integrating or interfacing systems involving database management systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/546—Message passing systems or structures, e.g. queues
Abstract
The invention discloses a kind of database connection management method and devices, are used for managed database resource.Database connection management method, comprising: database connection pool calculates each weighted value using connection request in queue, is ranked up according to each using the weighted value of connection request；It will be the application connection request distribution connection of queue foremost one when the available free connection of database.This method protects relatively important business operation by the order-assigned resource in queue.
Description
Technical field
The present invention relates to computer software technical field more particularly to a kind of database connection management method.
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
The distribution of various dimensions is capable of in source, then can effectively promote service success rate.Existing application system connects usually using database
Pond is connect to be managed database connection resource.
Currently, database connection pool mainly has a following deficiency: first, connection allocation rule is " seizing " formula, non-to arrive first elder generation
, it will cause certain application connection requests too long；Second, the business operation that can not targetedly ensure is gone on smoothly.
Summary of the invention
The invention proposes a kind of database connection management method and devices, connect for solving certain applications in the prior art
Connect the problem of requesting too long and can not targetedly protecting important business operation.
The embodiment of the present invention provides a kind of database connection management method, this method comprises:
Equipment is stored to determine using each weighted value using connection request in connection request queue；Wherein, for any
Using connection request, this applies connection request for requesting connection database, and it is that basis should that this, which applies the weighted value of connection request,
It is determined using the request attribute information of connection request；
When the storage equipment determines that the database has idle connection, the application is distributed into the idle connection
Weighted value is maximum in connection request queue applies connection request.
Optionally, the storage equipment connects the application according to any weighted value size using connection request
Connect described in request queue it is any using connection request by from big to small sequence arrange.
Optionally, the request attribute information is included at least with the next item down: action type, priority, request time；It is described
The corresponding default weighted value of each single item in request attribute information；
It is any using connection request in connection request queue for applying, determine that application connection is asked according to following manner
The weighted value asked:
In the request attribute information that this is applied to connection request, default weighted value corresponding to included each single item
With, as this apply connection request weighted value.
Optionally, if the application connection request queue is not up to the queue upper limit, the storage equipment receives first and answers
Use connection request；The queue upper limit is described using the maximum quantity that can be accommodated in connection request queue using connection request；
The storage equipment calculates the weighted value of the first application connection request.
Optionally, if the application connection request queue reaches the queue upper limit, the storage equipment calculates described first
Using the weighted value of connection request；If the weighted value of the first application connection request is greater than in the application connection request queue
Using the minimum value of connection request weighted value, then the corresponding application connection request of the minimum value of the weighted value is removed, and handle
Described first is put into using connection request using in connection request queue.
In the embodiment of the present invention, storage equipment can connect preset weighted value according to each application connection request, determine idle
The allocation order of connection, so as to avoid the method for salary distribution because of " preemptive type ", certain application connection requests connect the waiting time
More long situation, in addition, the weighted value using connection request operated by setting important service, guarantees that important service operation is excellent
First obtain database connection.
Based on same inventive concept, the embodiment of the present invention further provides a kind of database connection management device, should
Device includes:
Memory module: for determining using each weighted value using connection request in connection request queue；Wherein, for
Any to apply connection request, using connection request for requesting connection database, this is root using the weighted value of connection request for this
It is determined according to the request attribute information using connection request；
Processing module: when for determining that the database has idle connection, described answer is distributed into the idle connection
Connection request is applied with weighted value in connection request queue is maximum.
Optionally, the memory module is used for:
It, will be any described in the application connection request queue according to any weighted value size using connection request
Using connection request by sequence arrangement from big to small.
Optionally, the memory module is used for:
The request attribute information is included at least with the next item down: action type, priority, request time；The request belongs to
Property information in the corresponding default weighted value of each single item；
It is any using connection request in connection request queue for applying, determine that application connection is asked according to following manner
The weighted value asked:
In the request attribute information that this is applied to connection request, default weighted value corresponding to included each single item
With, as this apply connection request weighted value.
Optionally, the memory module is used for:
If the application connection request queue is not up to the queue upper limit, the storage equipment receives first and asks using connection
It asks；The queue upper limit is described using the maximum quantity that can be accommodated in connection request queue using connection request；The storage
Equipment calculates the weighted value of the first application connection request.
Optionally, the memory module is used for:
If the application connection request queue reaches the queue upper limit, the storage equipment calculates the first application connection
The weighted value of request；If the weighted value of the first application connection request is greater than in the application connection request queue using connection
The minimum value of weighted value is requested, then is removed the corresponding application connection request of the minimum value of the weighted value, and described first
It is put into using connection request using in connection request queue.
Detailed description of the invention
Fig. 1 is a kind of schematic flow diagram of database connection management method provided in an embodiment of the present invention；
Fig. 2 is a kind of detail flowchart of database connection management method provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of database connection management device provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with Figure of description to this hair
It is bright to be described in further detail, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The all other embodiment obtained, shall fall within the protection scope of the present invention.
The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.
Database is storehouse of the foundation on computer memory device for coming tissue, storage and management data according to data structure
Library；Storage equipment is the carrier of database, is an entity.
When application will access the database in distributed data base system, need to establish database connection, so that can be right
Database is accessed, and such as the data in database are inquired, increase, modify and deleted by SQL operation, and are being grasped
Database connection is closed after the completion of making.The database application complicated for one, it is frequent to establish, close database, it can be very big
Reduction system performance, increase the expense of system, or even the bottleneck as system.Database is connected to become a kind of limited high
Your resource.
In order to rationally database be utilized to connect this resource, Database Connection-Pool Technology is produced.Database connection pool is
Store equipment in a software module, existing application system usually using database connection pool to database connection resource into
Row management.The basic idea of Database Connection-Pool Technology is that database is connected to object when system initialization
It is established and stored in memory, when application request accesses database, not establishes new connection, but from database
An established idle connection is taken out in connection pool distributes to the request.After use, using also not by connection closed,
But return Connection Release in database connection pool, so that next request uses.And establishment of connection, closing are all by data
Library connection pool itself manages.At the same time it can also by be arranged database connection pool parameter come in connection pool of controlling database
Initial connection number, connection bound number and the maximum access times of each connection, maximum idle time etc..By
Connection is shared between, rather than is resettled when needing to connect, so that it may be improved resource use, be improved the sound of application
It should be able to power.
It is below database connection management method provided in an embodiment of the present invention.With reference to Fig. 1, provided for the embodiment of the present invention
Database connection management method schematic flow diagram.
Step 101: storage equipment is determined using each weighted value using connection request in connection request queue.
Step 102: when the storage equipment determines that there is the free time in the wide area information server connection pool connects, by institute
It states idle connection and distributes to that weighted value in the application connection request queue is maximum to apply connection request.
In step 101, wherein connection request is applied for any, this is used to request connection database using connection request,
It is that the request attribute information according to this using connection request determines that this, which applies the weighted value of connection request,.
It applies before being connected with database, first to send one to storage equipment and apply connection request, if current number
This is distributed to using connection request without idle connection according to library, this is just lined up in database connection pool using connection request.
In this way, the connection of unallocated data library just forms a waiting list using connection request in database connection pool, this
Waiting list is known as applying connection request queue.Each application connection request contains request attribute information.According to each application
The request attribute information of connection request can calculate the weighted value for applying connection request.
Request attribute information is included at least with the next item down: action type, priority, request time；In addition to this three, may be used also
Other parameters are added.Action type is the type operated to database, is such as inserted into data, deletes data, updates number
According to, inquiry data；Priority is that the priority for inquiring the order amount of money is such as set as 9 according to the preset rank of specific business, will
The priority of inquiry order user address is set as 5；At the time of request time is that application is initiated using connection request.
Each single item in request attribute information is known as a required parameter, the corresponding default weighted value of each required parameter
(including the case where parameter value for sky), these weighted values are manually set according to specific type of service.It can will think in business
Important is set as comparatively high amts grade using a weighted value range of connection request attribute information, can also connect the application of same item
The different types of weighted value of request attribute information is set as the larger value；If the weighted value range of action type is set as 10~90, increase
The weighted value of addend evidence is set as 50, and the weighted value for inquiring data is set as 20；The weighted value range of priority is set as 1~9；When request
Between weighted value range be set as 0.1~0.9 etc..
There are many combination of request attribute information is possible, such as (1) contains only action type；(2) priority is contained only；(3) it contains only
Request time；(4) action type and priority are contained only；(5) action type and request time are contained only；(6) it contains only priority and asks
Seeking time；(7) action type, priority and request time all contain.
For example, receiving the first application connection request includes two using connection request, the two apply connection request
Request attribute information are as follows: A1: action type: insertion data, priority: empty, request time: 6 divide 15 seconds when 0；A2: operation class
Type: insertion data, priority: empty, request time: 6 divide 6 seconds when 0；A3: action type: inquiry data, priority: empty, request
Time: 6 divide 6 seconds when 0, and the time is to make for 24 hours.
It for example, is 4 using the upper limit of connection request queue, at this time without applying connection request using connection request
It is lined up in queue.Specifically, if being the action type application connection request using the weighted value calculation of connection request
Weighted value, the weighted value of priority are added with the weighted value of request time, the corresponding weighted value difference of insertion data, inquiry data
It is 90,60；The weight computing rule of request time is (0.9-X/24)+0.1* (1-Y/60)+0.01* (1-Z/60), X, Y, and Z divides
The Hour Minute Second of other corresponding requests time；Then the corresponding weighted value of A1, A2, A3 is respectively 90.0975,90.0990,60.0990.
But in the sequence of practical application connection request queue, i.e. it is not necessary to calculate weighted value.For example, due to handle
Action type is considered as compared to priority and the prior required parameter of request time, therefore the quantity of the weighted value of action type
Grade is greater than the order of magnitude of the weighted value of request time, and insertion data are considered as compared to inquiry data than prior behaviour
The weighted value made, therefore be inserted into data is far longer than the weighted value of inquiry data.So after receiving A1, A2, it is only necessary to
According to A1, A2, A3 action type, the weighted value for calculating A3 is not needed, directly A3 can be come finally；Due to the behaviour of A1, A2
It is identical to make type, but the A2 ratio A1 received time is early, does not also need the weighted value of A1, A2, before A2 directly being come A1.This
It has been A2, A1, A3 using the sequence in connection request queue since sample.
According to any corresponding weighted value of each single item using connection request attribute information using connection request, determines and appoint
The weighted value of one application connection request.It is added after being such as added by the corresponding weighted value of each single item of request attribute information, take logarithm
Or substitute into preset formula etc..
Equipment is stored according to any weighted value using connection request, determines and connects using application each in connection request queue
Connect the sequence of request.It is such as arranged according to the sequence of the weighted value of application connection request from big to small, from small to large or other is made by oneself
Adopted rule.
In step 102, after step 101 is finished, the sequence of connection request has been applied using in connection request queue
Through determination.
When the available free connection of database, just this free time connection is distributed to and is answered using first of connection request queue
With connection request, that is, weighted value it is maximum that apply connection request；If database is without idle connection, using connection
It continues to wait using connection request in request queue.
Database connection pool can not be received infinitely using connection request, therefore application connection request queue can there are one
Accommodate the maximum quantity for applying connection request, referred to as the queue upper limit.
Since there are many application, and application may all need to connect database at any time, answering in application connection request queue
During being lined up with connection request, new connection request is applied using possibly also sending.If being not up to team using connection request queue
The column upper limit, storage equipment will continue to receive using new connection request of applying, and referred to as first applies connection request.First is received to answer
After connection request, storage equipment can calculate the weighted value of the first application connection request, and be put into using connection request queue
In be ranked up together with application connection request existing in current application connection request queue.
If reaching the queue upper limit using connection request queue, the weight that equipment calculates the first application connection request is stored
Value；If the weighted value of the first application connection request is greater than using the minimum for applying connection request weighted value in connection request queue
The corresponding application connection request of the minimum value of weighted value is then removed, and is put into application using connection request described first by value
In connection request queue；If the weighted value of the first application connection request, which is less than, (because request time is inconsistent, will not wait
In) using the minimum value for applying connection request weighted value in connection request queue, then the first application connection request is removed.
Database connection management method provided in an embodiment of the present invention is described in detail below.With reference to Fig. 2, for the present invention
The detail flowchart for the database connection management method that embodiment provides.
Step 201: receiving the first application connection request and connect.
Step 202: determining using each weighted value using connection request in connection request queue.
Step 203: determining using each sequence using connection request in connection request queue.
Step 204: each in processing queue application connection request queue to apply connection request.
In step 201, specifically, received first application connection request may be one, it is also possible to connect for multiple applications
Connect request.For example, receiving the first application connection request includes two using connection request, the two are using connection request
Request attribute information are as follows: B1: action type: insertion data, priority: 9, request time: 6 divide 15 seconds when 0；B2: action type:
Data are inquired, priority: 6, request time: 6 divide 6 seconds when 0, and the time is to make for 24 hours.
For example, it is 4 using the upper limit of connection request queue, there are 3 application connection requests to ask using connection at this time
It asks in queue and is lined up, these three are B3: action type using the request attribute information of connection request: deleting data, priority: 8,
Request time: 3 divide 6 seconds when 0；B4: action type: inquiry data, priority: 7, request time: 3 divide 9 seconds when 0；B5: operation class
Type: more new data, priority: 8, request time: 3 divide 3 seconds when 0.
In step 202, specifically, if being the operation application connection request using the weighted value calculation of connection request
Weighted value, the weighted value of priority of type are added with the weighted value of request time, insertion data, delete data, more new data,
Inquiring the corresponding weighted value of data is respectively 90,80,70,60；The corresponding weight of priority is priority；The weight of request time
Computation rule is (0.9-X/24)+0.1* (1-Y/60)+0.01* (1-Z/60), X, Y, and Z respectively corresponds the time-division of request time
Second；Then the corresponding weighted value of B1, B2, B3, B4, B5 is respectively 99.0975,66.0990,88.1040,67.1035,78.1045.
In step 203, using the sequence of three application connection requests in connection request queue are as follows: B3, B5, B4.Due to B2
Request is first issued, so the weighted value for first calculating B2 is 66.0990, and because being less than using the connection request queue upper limit, because
This B2, which is also added, to be applied in connection request queue, and is arranged with B3, B4, B5.At this moment put in order is B3, B5, B4, B2.
In step 204, for example, when available free connection, B3 just is distributed in free time connection, B3 also connects from application therewith
Connect in request queue and remove, become B5, B4, B2 using connection request queue, later further according to whether available free connection, to queue
In B5, B4, B2 handled；When for example, without idle connection, using B3, B5, B4, B2 in connection request queue
It continues waiting for, for example, before free time connection, storage equipment has received B1, since the weighted value of B1 is 99.0975, answers
It is greater than 66.0990 with the weighted value that the minimum value of B3, B5, B4, B2 weighted value in connection request queue is 66.0990, B1, so
Corresponding application connection request B2 is removed from application connection request queue.
As shown in figure 3, for a kind of structural schematic diagram of file update identification device provided in an embodiment of the present invention.
Memory module 301: for determining using each weighted value using connection request in connection request queue；Wherein,
Connection request is applied for any, using connection request for requesting connection database, this applies the weighted value of connection request for this
It is that the request attribute information of connection request is applied to determine according to this；
Processing module 302: when for determining that the database has idle connection, the idle connection is distributed to described
Connection request is applied using weighted value in connection request queue is maximum.
Optionally, the memory module 301 is used for:
It, will be any described in the application connection request queue according to any weighted value size using connection request
Using connection request by sequence arrangement from big to small.
Optionally, the memory module 301 is used for:
The request attribute information is included at least with the next item down: action type, priority, request time；The request belongs to
Property information in the corresponding default weighted value of each single item；
It is any using connection request in connection request queue for applying, determine that application connection is asked according to following manner
The weighted value asked:
In the request attribute information that this is applied to connection request, default weighted value corresponding to included each single item
With, as this apply connection request weighted value.
Optionally, the memory module 301 is used for:
If the application connection request queue is not up to the queue upper limit, the storage equipment receives first and asks using connection
It asks；The queue upper limit is described using the maximum quantity that can be accommodated in connection request queue using connection request；The storage
Equipment calculates the weighted value of the first application connection request.
Optionally, the memory module 301 is used for:
If the application connection request queue reaches the queue upper limit, the storage equipment calculates the first application connection
The weighted value of request；If the weighted value of the first application connection request is greater than in the application connection request queue using connection
The minimum value of weighted value is requested, then is removed the corresponding application connection request of the minimum value of the weighted value, and described first
It is put into using connection request using in connection request queue.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Claims (10)
1. a kind of database connection management method characterized by comprising
Equipment is stored to determine using each weighted value using connection request in connection request queue；Wherein, for any application
Connection request, using connection request for requesting connection database, this is according to the application using the weighted value of connection request for this
What the request attribute information of connection request determined；
When the storage equipment determines that the database has idle connection, the application is distributed into the idle connection and is connected
Weighted value is maximum in request queue applies connection request.
2. the method as described in claim 1 characterized by comprising
The storage equipment, will be in the application connection request queue according to any weighted value size using connection request
It is described it is any using connection request by from big to small sequence arrange.
3. the method as described in claim 1 characterized by comprising
The request attribute information is included at least with the next item down: action type, priority, request time；The request attribute letter
The corresponding default weighted value of each single item in breath；
It is any using connection request in connection request queue for applying, determine this using connection request according to following manner
Weighted value:
By this using in the request attribute information of connection request, the sum of default weighted value corresponding to included each single item is made
The weighted value of connection request is applied for this.
4. method as claimed in claim 3, which is characterized in that the method also includes:
If the application connection request queue is not up to the queue upper limit, the storage equipment receives first and applies connection request；
The queue upper limit is described using the maximum quantity that can be accommodated in connection request queue using connection request；The storage equipment
Calculate the weighted value of the first application connection request.
5. method as claimed in claim 4, comprising:
If the application connection request queue reaches the queue upper limit, the storage equipment calculates described first and applies connection request
Weighted value；If the weighted value of the first application connection request, which is greater than in the application connection request queue, applies connection request
The minimum value of weighted value then removes the corresponding application connection request of the minimum value of the weighted value, and first application
Connection request is put into using in connection request queue.
6. a kind of database connection management device characterized by comprising
Memory module: for determining using each weighted value using connection request in connection request queue；Wherein, for any
Using connection request, this applies connection request for requesting connection database, and it is that basis should that this, which applies the weighted value of connection request,
It is determined using the request attribute information of connection request；
Processing module: when for determining that the database has idle connection, the application is distributed into the idle connection and is connected
It is maximum using connection request to connect weighted value in request queue.
7. device as claimed in claim 6, which is characterized in that the memory module is used for:
According to any weighted value size using connection request, by any application described in the application connection request queue
Connection request is by sequence arrangement from big to small.
8. device as claimed in claim 6, which is characterized in that the memory module is used for:
The request attribute information is included at least with the next item down: action type, priority, request time；The request attribute letter
The corresponding default weighted value of each single item in breath；
It is any using connection request in connection request queue for applying, determine this using connection request according to following manner
Weighted value:
By this using in the request attribute information of connection request, the sum of default weighted value corresponding to included each single item is made
The weighted value of connection request is applied for this.
9. device as claimed in claim 8, which is characterized in that the memory module is used for:
If the application connection request queue is not up to the queue upper limit, the storage equipment receives first and applies connection request；
The queue upper limit is described using the maximum quantity that can be accommodated in connection request queue using connection request；The storage equipment
Calculate the weighted value of the first application connection request.
10. device as claimed in claim 9, which is characterized in that the memory module is used for:
If the application connection request queue reaches the queue upper limit, the storage equipment calculates described first and applies connection request
Weighted value；If the weighted value of the first application connection request, which is greater than in the application connection request queue, applies connection request
The minimum value of weighted value then removes the corresponding application connection request of the minimum value of the weighted value, and first application
Connection request is put into using in connection request queue.
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| WO2021013124A1 (en) * | 2019-07-24 | 2021-01-28 | 中兴通讯股份有限公司 | Method and device for managing automated testing resources |
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