CN108255959A - Data query method and device in a kind of Redis - Google Patents
Data query method and device in a kind of Redis Download PDFInfo
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- CN108255959A CN108255959A CN201711396994.3A CN201711396994A CN108255959A CN 108255959 A CN108255959 A CN 108255959A CN 201711396994 A CN201711396994 A CN 201711396994A CN 108255959 A CN108255959 A CN 108255959A
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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
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2453—Query optimisation
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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
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2455—Query execution
- G06F16/24552—Database cache management
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Abstract
The present invention provides data query method and device in a kind of Redis, the method includes：S1 according to the first querying condition of user setting, obtains the corresponding key code of first querying condition；Wherein, the key code is generated according to the corresponding table name of first querying condition, field name and field value；According to the key code, the corresponding query result of the key code is obtained from Redis cachings by S2；Wherein, the query result is according to acquired in being inquired first querying condition.The present invention is by by key code and the advance associated storage of querying condition, by key code and according to the advance associated storage of query result that querying condition obtains in advance, the corresponding key code of querying condition is directly obtained according to the querying condition of user setting, the corresponding query result of the key code is obtained from Redis cachings according to the key code, on the one hand, inquiry velocity is fast, provides the public method to table inquiry each in database, improves development efficiency.
Description
Technical field
The invention belongs to database application field, more particularly, to data query method and device in a kind of Redis.
Background technology
Redis is a long-distance inner database, it not only has good performance, also with replicability and to solve
Problem and the data model generated store data based on key-value, i.e. key code is unique, and a key code corresponds to one
A value, described value can be respective form.
Newer data periodically can be written disk or modification is operated the additional record file of write-in by Redis
In, so as to fulfill master-slave synchronisation.It is general first to obtain data to be checked from Redis cachings in Redis application scenarios, if
There is no query result in Redis, then go, due to generally there are many tables in database in database, to inquire when to each table again
When, it needs to write querying method, when querying condition changes, and needs to add new method, so as to increase size of code
With the maintenance difficulties of code.
Invention content
To overcome the problems, such as that the data query size of code in above-mentioned Redis is big and code maintenance difficulty is big or at least part
Ground solves the above problems, and the present invention provides data query method and devices in a kind of Redis.
According to the first aspect of the invention, a kind of data query method in Redis is provided, including：
S1 according to the first querying condition of user setting, obtains the corresponding key code of first querying condition；Wherein,
The key code is generated according to the corresponding table name of first querying condition, field name and field value；
According to the key code, the corresponding query result of the key code is obtained from Redis cachings by S2；Wherein, it is described
Query result is according to acquired in being inquired first querying condition.
Specifically, the step S1 is specifically included：
If first querying condition exists in the second pre-defined querying condition, the first inquiry item is obtained
The corresponding key code of part.
Specifically, it is further included before the step S1：
The second querying condition is pre-defined for each table in database, one is generated respectively for each second querying condition
Corresponding key code；
According to each second querying condition, the table in the database is inquired, obtains query result, by described in
During query result storage is cached to Redis.
Specifically, the query result is stored to Redis the step in caching to further include：
If the storage duration of query result is more than preset duration in the Redis cachings, according to the query result pair
The second querying condition answered again inquires the table in the database, and the result inquired again is stored with mulching method
In being cached to the Redis.
Specifically, the method further includes：
When the content of table in database is increased, is deleted or modified, obtain the table corresponding all second and look into
Inquiry condition；
The table is inquired again according to corresponding all second querying conditions of the table, the result that will be inquired again
In being cached with mulching method storage to the Redis.
Specifically, the method further includes：
When the content of table in database is increased, is deleted or modified, according to comprising one or more in the table
Second querying condition of attribute again inquires the table, and the result of inquiry is stored with mulching method to described
In Redis cachings.
Specifically, the step S2 is further included：
If the corresponding query result of the key code is not present in Redis cachings, from database into
Row inquiry, and in the key code and the query result obtained from the database storage to Redis cachings.
According to the second aspect of the invention, data query arrangement in a kind of Redis is provided, including：
First acquisition unit for the first querying condition according to user setting, obtains first querying condition and corresponds to
Key code；Wherein, the key code is generated according to the corresponding table name of first querying condition, field name and field value；
Second acquisition unit, for according to the key code, the corresponding inquiry of the key code to be obtained from Redis cachings
As a result；Wherein, the query result is according to acquired in being inquired first querying condition.
According to the third aspect of the invention we, data query equipment in a kind of Redis is provided, including：
At least one processor, at least one processor and bus；Wherein,
The processor and memory complete mutual communication by the bus；
The memory is stored with the program instruction that can be performed by the processor, and the processor calls described program to refer to
Order is able to carry out method as described before.
According to the fourth aspect of the invention, a kind of non-transient computer readable storage medium storing program for executing is provided, for storing such as preceding institute
State the computer program of method.
The present invention provides data query method and device in a kind of Redis, and this method passes through the inquiry according to user setting
Condition obtains the corresponding key code of querying condition, and it is corresponding to obtain the key code in being cached according to the key code from Redis
Query result, on the one hand, inquiry velocity is fast；On the other hand, the public method to table inquiry each in database is provided, is improved
Development efficiency.
Description of the drawings
Fig. 1 is data query method overall flow schematic diagram in Redis provided in an embodiment of the present invention；
Fig. 2 is data query arrangement overall structure diagram in Redis provided in an embodiment of the present invention；
Fig. 3 is data query equipment overall structure schematic diagram in Redis provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but be not limited to the scope of the present invention.
Data query method, Fig. 1 in a kind of Redis is provided in one embodiment of the invention to carry for the embodiment of the present invention
Data query method overall flow schematic diagram, this method include in the Redis of confession：S1, according to the first of user setting the inquiry item
Part obtains the corresponding key code of first querying condition；Wherein, the key code is corresponding according to first querying condition
Table name, field name and field value generation；S2 according to the key code, obtains that the key code is corresponding to be looked into from Redis cachings
Ask result；Wherein, the query result is according to acquired in being inquired first querying condition.
Specifically, in S1, user can in input frame input inquiry keyword, according to the searching keyword and described
The corresponding attribute of input frame obtains first querying condition.First querying condition is target query condition, and user needs
Query result is inquired from Redis cachings according to first querying condition.It is described defeated if user inputs 25 in input frame
Enter the corresponding attribute of frame for the age, first querying condition is equal to 25 for the age, inquires the age from Redis cachings and is equal to
25 query result.The key code is unique, according to the corresponding table name of first querying condition, field name and field value
Generate key code.For example, first querying condition is to inquire the record that the age is 25 years old, key code from student tables
student+age+25.Can also be that the key code adds prefix, with the situation for preventing key code from bearing the same name.It is described in S2
The correspondence being stored in Redis cachings between the key code and the query result, can obtain according to the key code
Take the corresponding query result of the key code.The query result carries out inquiry according to first querying condition and acquires,
It is then store in Redis cachings.
When realizing, the initialization mode of model object find attributes, public static that will be original are changed first
Finder<Long,OrderBusiness>Find=new Finder<Long,OrderBusiness>
(OrderBusiness.class) public static Finder are revised as<Long,OrderBusiness>Find=
FinderUtil.createFinder(new OrderBusiness()).Wherein OrderBusiness is the table in database
Single object, FinderUtil are the query object in the present embodiment, and the query object includes querying condition and querying condition pair
The query result answered.
When query result is single object, inquired using following code：
OrderBusiness condition=new OrderBusiness ()；
condition.setBusinessId(businessID)；
condition.setOrderMode(orderMode)；
condition.setStatus(DATA_ENABLE)；
OrderBusiness orderBusiness=BMKPRedisManager.queryObject (condition)；
Wherein, businessID, orderMode and DATA_ENABLE are the querying condition of user setting,
BMKPRedisManager.queryObject is querying method.
When query result is list objects, inquired using following code：
OrderBusiness condition=new OrderBusiness ()；
condition.setOrderMode(orderMode)；
condition.setStatus(DATA_ENABLE)；
List<OrderBusiness>List=BMKPRedisManager.queryList (condition)；
The present embodiment according to the querying condition of user setting by obtaining the corresponding key code of querying condition, according to the pass
Key obtains the corresponding query result of the key code from Redis cachings, on the one hand, inquiry velocity is fast；On the other hand, it provides
To the public method of table inquiry each in database, development efficiency is improved.
On the basis of above-described embodiment, step S1 described in the present embodiment specifically includes：If first querying condition
Exist in second querying condition, then obtain the corresponding key code of first querying condition.
Specifically, it first determines whether in the second pre-defined querying condition with the presence or absence of the first inquiry item of user setting
Part, if in the presence of the corresponding key code of first querying condition is obtained.
On the basis of above-described embodiment, further included before step S1 described in the present embodiment：For each table in database
Pre-defined second querying condition generates a corresponding key code respectively for each second querying condition；According to each described
Second querying condition inquires the table in the database, obtains query result, the query result storage is arrived
In Redis cachings.
Specifically, the querying condition that second querying condition is typically used for for the table in database, in database
Every table, pre-define one or more second querying conditions for the table, one generated respectively for each second querying condition
A corresponding key code, the key code are unique.It is corresponding second querying condition can be generated in the form of from increasing
Key code.For each second querying condition, the table in database is inquired according to second querying condition, obtains inquiry
It as a result, and will be in query result storage to Redis cachings.
On the basis of above-described embodiment, the query result is stored into Redis the step in caching in the present embodiment
It further includes：If the storage duration of query result is more than preset duration in the Redis cachings, corresponded to according to the query result
The second querying condition the table in the database is inquired again, the result inquired again is arrived with mulching method storage
In the Redis cachings.
Specifically, since user is there may be situation about modifying manually to the table in database, Redis is caused to cache
In query result can also change, therefore for the Redis caching in query result set preset duration, looked into when described
When asking the storage duration of result more than preset duration, then illustrate the query result failure.It is needed at this time according to the failure
The corresponding querying condition of query result again inquires the table in the database, will inquire the query result of acquisition again
Corresponding query result before covering is inquired again.
On the basis of the various embodiments described above, method described in the present embodiment further includes：The content of table in database
When being increased, be deleted or modified, corresponding all second querying conditions of the table are obtained；According to the table corresponding all
Two querying conditions again inquire the table, and the result inquired again is stored with mulching method to the Redis and is cached
In.
Specifically, when the content of table in database is increased, is deleted or modified, such as increase a record, delete
One record modifies to the value of some attribute in certain record, obtains the corresponding all second inquiry items of the table
Part obtains pre-defined the second querying condition inquired the table.It is looked into according to the table corresponding all second
Inquiry condition again inquires the table, corresponding inquiry knot before the query result covering for inquiring acquisition again is inquired again
Fruit.
On the basis of the various embodiments described above, method described in the present embodiment further includes：It is carried out when to the table in database
When increasing, being deleted or modified, according to the second querying condition comprising attributes one or more in the table again to the table into
Row inquiry, and the result of inquiry is stored with mulching method into Redis cachings.
Specifically, when the table in database is increased, is deleted or modified, the table corresponding all second is inquired
In condition, the corresponding query result of certain second querying conditions does not change, it is only necessary to which changed inquiry is tied
Corresponding second querying condition of fruit is inquired again, i.e., according to the second inquiry item comprising attributes one or more in the table
Part again inquires the table, corresponding query result before the query result covering for inquiring acquisition again is inquired again.
On the basis of above-described embodiment, step S2 described in the present embodiment further includes：If the corresponding institute of the key code
It states query result to be not present in Redis cachings, is then inquired from database, and the key code and from described
During the query result storage obtained in database is cached to the Redis.
Specifically, in the absence of the corresponding query result of the key code is in Redis cachings, then illustrate
There is no the corresponding query result of first querying condition in Redis cachings, at this time according to first querying condition in number
According to being inquired in library, query result is obtained.The key code and the query result obtained from database are stored to described
In Redis cachings.
Data query arrangement in a kind of Redis is provided in another embodiment of the present invention, and Fig. 2 is the embodiment of the present invention
Data query arrangement overall structure diagram in the Redis of offer, the device include first acquisition unit 1 and second acquisition unit
2, wherein：
The first acquisition unit 1 is used for the first querying condition according to user setting, obtains first querying condition
Corresponding key code；Wherein, the key code is given birth to according to the corresponding table name of first querying condition, field name and field value
Into；The second acquisition unit 2 is used for according to the key code, and the corresponding inquiry of the key code is obtained from Redis cachings
As a result；Wherein, the query result is according to acquired in being inquired first querying condition.
Specifically, user can in input frame input inquiry keyword, according to the searching keyword and the input
The corresponding attribute of frame obtains first querying condition.First querying condition is target query condition, and user needs basis
First querying condition inquires query result from Redis cachings.The key code is unique, is looked into according to described first
The corresponding table name of inquiry condition, field name and field value generation key code.The key code is unique.In the Redis cachings
The correspondence being stored between the key code and the query result, the second acquisition unit 2 is according to the key code
The corresponding query result of the key code can be obtained.The query result is got previously according to first querying condition,
It is then store in Redis cachings.
The present embodiment according to the querying condition of user setting by obtaining the corresponding key code of querying condition, according to the pass
Key obtains the corresponding query result of the key code from Redis cachings, on the one hand, inquiry velocity is fast；On the other hand, it provides
To the public method of table inquiry each in database, development efficiency is improved.
On the basis of above-described embodiment, first acquisition unit described in the present embodiment is specifically used for：If described first looks into
Inquiry condition exists in second querying condition, then obtains the corresponding key code of first querying condition.
On the basis of above-described embodiment, device described in the present embodiment further includes creating unit, for in database
Each table pre-define the second querying condition, generate a corresponding key code respectively for each second querying condition；According to
Each second querying condition, inquires the table in the database, obtains query result, the query result is stored
In being cached to Redis.
On the basis of above-described embodiment, creating unit described in the present embodiment is additionally operable to：If it is looked into the Redis cachings
The storage duration for asking result is more than preset duration, then according to corresponding second querying condition of the query result again to the number
It is inquired according to the table in library, the result inquired again is stored with mulching method into Redis cachings.
On the basis of the various embodiments described above, device described in the present embodiment further includes the first updating unit, for when pair
When the content of table is increased, is deleted or modified in database, corresponding all second querying conditions of the table are obtained；According to institute
It states corresponding all second querying conditions of table again to inquire the table, the result inquired again is stored with mulching method
In being cached to the Redis.
On the basis of the various embodiments described above, device described in the present embodiment further includes the second updating unit, for when pair
When the content of table is increased, is deleted or modified in database, looked into according to second comprising attributes one or more in the table
Inquiry condition again inquires the table, and the result of inquiry is stored with mulching method into Redis cachings.
On the basis of above-described embodiment, second acquisition unit described in the present embodiment is additionally operable to：If the key code pair
The query result answered the Redis caching in be not present, then inquired from database, and the key code with
During the query result storage obtained from the database is cached to the Redis.
The present embodiment provides data query equipment in a kind of Redis, Fig. 3 is number in Redis provided in an embodiment of the present invention
It is investigated that asking equipment overall structure schematic diagram, which includes：At least one processor 31, at least one processor 32 and bus
33；Wherein,
The processor 31 and memory 32 complete mutual communication by the bus 33；
The memory 32 is stored with the program instruction that can be performed by the processor 31, and the processor calls the journey
Sequence instruction is able to carry out the method that above-mentioned each method embodiment is provided, such as including：S1, according to the first of user setting the inquiry
Condition obtains the corresponding key code of first querying condition；Wherein, the key code is corresponded to according to first querying condition
Table name, field name and field value generation；According to the key code, it is corresponding to obtain the key code in being cached from Redis by S2
Query result；Wherein, the query result is according to acquired in being inquired first querying condition.
The present embodiment provides a kind of non-transient computer readable storage medium storing program for executing, the non-transient computer readable storage medium storing program for executing
Computer instruction is stored, the computer instruction makes the computer perform the method that above-mentioned each method embodiment is provided, example
Such as include：S1 according to the first querying condition of user setting, obtains the corresponding key code of first querying condition；Wherein, institute
Key code is stated to be generated according to the corresponding table name of first querying condition, field name and field value；S2, according to the key code,
The corresponding query result of the key code is obtained from Redis cachings；Wherein, the query result is according to the described first inquiry item
Acquired in part is inquired.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and aforementioned program can be stored in a computer read/write memory medium, the program
When being executed, step including the steps of the foregoing method embodiments is performed；And aforementioned storage medium includes：ROM, RAM, magnetic disc or light
The various media that can store program code such as disk.
Data query apparatus embodiments are only schematical in Redis described above, wherein described as separation
The unit of part description may or may not be it is physically separate, the component shown as unit can be or
It can not be physical unit, you can be located at a place or can also be distributed in multiple network element.It can be according to reality
Border needs to select some or all of module therein to realize the purpose of this embodiment scheme.Those of ordinary skill in the art
In the case where not paying performing creative labour, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It is realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Based on such understanding, on
Technical solution is stated substantially in other words to embody the part that the prior art contributes in the form of software product, it should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including several fingers
It enables and (can be personal computer, server or the network equipment etc.) so that computer equipment is used to perform each implementation
Method described in certain parts of example or embodiment.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of data query method in Redis, which is characterized in that including：
S1 according to the first querying condition of user setting, obtains the corresponding key code of first querying condition；Wherein, it is described
Key code is generated according to the corresponding table name of first querying condition, field name and field value；
According to the key code, the corresponding query result of the key code is obtained from Redis cachings by S2；Wherein, the inquiry
As a result according to acquired in being inquired first querying condition.
2. according to the method described in claim 1, it is characterized in that, the step S1 is specifically included：
If first querying condition exists in the second pre-defined querying condition, first querying condition pair is obtained
The key code answered.
3. it according to the method described in claim 2, it is characterized in that, is further included before the step S1：
The second querying condition is pre-defined for each table in database, a correspondence is generated respectively for each second querying condition
Key code；
According to each second querying condition, the table in the database is inquired, query result is obtained, by the inquiry
As a result it stores in Redis cachings.
4. according to the method described in claim 3, it is characterized in that, by query result storage to the step in Redis cachings
Suddenly it further includes：
If the storage duration of query result is more than preset duration in the Redis cachings, corresponding according to the query result
Second querying condition again inquires the table in the database, and the result inquired again is stored with mulching method to institute
It states in Redis cachings.
5. according to any methods of claim 1-4, which is characterized in that the method further includes：
When the content of table in database is increased, is deleted or modified, the corresponding all second inquiry items of the table are obtained
Part；
The table is inquired again according to corresponding all second querying conditions of the table, by the result inquired again to cover
During the storage of lid form is cached to the Redis.
6. according to any methods of claim 1-4, which is characterized in that the method further includes：
When the content of table in database is increased, is deleted or modified, according to including one or more attributes in the table
The second querying condition the table is inquired again, and by the result of inquiry with mulching method storage delay to the Redis
In depositing.
7. according to any methods of claim 1-4, which is characterized in that the step S2 is further included：
If the corresponding query result of the key code is not present in Redis cachings, looked into from database
It askes, and in the key code and the query result obtained from the database storage to Redis cachings.
8. a kind of data query arrangement in Redis, which is characterized in that including：
First acquisition unit for the first querying condition according to user setting, obtains the corresponding pass of first querying condition
Key；Wherein, the key code is generated according to the corresponding table name of first querying condition, field name and field value；
Second acquisition unit, for according to the key code, the corresponding inquiry knot of the key code to be obtained from Redis cachings
Fruit；Wherein, the query result is according to acquired in being inquired first querying condition.
9. a kind of data query equipment in Redis, which is characterized in that including：
At least one processor, at least one processor and bus；Wherein,
The processor and memory complete mutual communication by the bus；
The memory is stored with the program instruction that can be performed by the processor, and the processor calls described program instruction energy
Enough methods performed as described in claim 1 to 7 is any.
10. a kind of non-transient computer readable storage medium storing program for executing, which is characterized in that the non-transient computer readable storage medium storing program for executing is deposited
Computer instruction is stored up, the computer instruction makes the computer perform the method as described in claim 1 to 7 is any.
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| CN109063177A (en) * | 2018-08-22 | 2018-12-21 | 中兴飞流信息科技有限公司 | A kind of information query method, relevant apparatus and readable storage medium storing program for executing |
| CN110457541A (en) * | 2019-06-28 | 2019-11-15 | 卓尔智联(武汉)研究院有限公司 | Processing method, service platform, terminal device and the storage medium of data |
| CN110457541B (en) * | 2019-06-28 | 2023-01-20 | 卓尔智联(武汉)研究院有限公司 | Data processing method, service platform, terminal device and storage medium |
| CN112395283A (en) * | 2019-08-14 | 2021-02-23 | 中移(苏州)软件技术有限公司 | Data query method and device and storage medium |
| CN112395283B (en) * | 2019-08-14 | 2022-12-13 | 中移(苏州)软件技术有限公司 | Data query method and device and storage medium |
| CN112506961A (en) * | 2020-12-28 | 2021-03-16 | 浪潮云信息技术股份公司 | Method for improving data query efficiency |
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