CN109800236A - Support the distributed caching method and equipment of multinode - Google Patents
Support the distributed caching method and equipment of multinode Download PDFInfo
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- CN109800236A CN109800236A CN201910081291.4A CN201910081291A CN109800236A CN 109800236 A CN109800236 A CN 109800236A CN 201910081291 A CN201910081291 A CN 201910081291A CN 109800236 A CN109800236 A CN 109800236A
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Abstract
The object of the present invention is to provide a kind of distributed caching method for supporting multinode and equipment, the present invention passes through the storage or acquisition request of client receive key, calculate the corresponding cryptographic Hash of key, corresponding host node is obtained from the mapping table based on the cryptographic Hash, next the connection of the host node can be obtained, carry out the storage or acquisition request of last key, the fragment of distributed node is realized in client, entire Slicing procedure is due to being realized in client, the request of client only needs primary network communication that can complete, primary network communicates the acquisition or storage that can be achieved with key, greatly reduce network communication cost.In addition, determining that host node corresponds to weight according to server hardware upgrade status in client, the number that host node circulation occurs is determined according to corresponding weight, realizes and flexibly distributes Hash slot to clustered node.
Description
Technical field
The present invention relates to computer field more particularly to a kind of distributed caching method for supporting multinode and equipment.
Background technique
With the development of internet, the especially rise of mobile Internet causes various web application access amounts and day all
Increase, significantly increases the pressure of web application server, therefore the cache server of single node cannot support current height simultaneously
Scene is sent out, the distributed caching technology of multinode is supported to become the focus of Internet technology, various realities on network naturally
The cache server group scheme of existing multinode also emerges one after another, and although group scheme solves the problems, such as concurrently to access, still
Also other problem has been highlighted, such as the communications cost and availability issue of service, by taking redis as an example, redis is from 3.0 editions
Originally cluster slicing scheme is provided for, the data storage slicing principle which provides is such that redis cluster
Inside has divided 16384 Hash slots, these Hash slots are averaged distribution to multiple cluster master libraries, as client request key
When the storage or acquisition of (key), redis node first calculates the corresponding Hash slot of key, then navigates to some cluster master library, finally
The redirection node that client is returned by request redis node realizes final key acquisition or key storage, substantially process such as
Shown in Fig. 1, each node include a host node and it is corresponding one from node, such as host node master1 and corresponding from section
Point slave1, host node master2 and corresponding from node slave2.
As shown in Figure 1, currently existing scheme can slow down server stress really, cope with concurrent request, but there are still with
Lower disadvantage:
1. a key storage obtains needs progress network communication three times, as shown in Figure 1, wherein for the first time, client
Client requests Hash slot to host node master1；Second of host node master1 is to client returns to Hash slot；
For the third time, client is redirected to host node master2 according to the Hash slot of return, realize final key obtain or
Key storage；This mode network communication is at high cost；
2.redis cluster divides Hash slot equally using multinode, does not support to carry out corresponding weight according to server performance situation
Dynamic Hash distribution, it is inflexible.
Summary of the invention
It is an object of the present invention to provide a kind of distributed caching method for supporting multinode and equipment.
According to an aspect of the invention, there is provided a kind of distributed caching method for supporting multinode, this method comprises:
Establish the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein institute in the mapping table
It states cryptographic Hash to arrange by sequence from small to large, each host node of the corresponding cryptographic Hash sequentially cycle arrangement, each main section
The number that dot cycle occurs is determined based on corresponding weight and increment factor；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of the key, calculated based on
Cryptographic Hash obtains corresponding host node from the mapping table；
The client is established with after the connection of the host node got, the client is to described in host node transmission
The storage or acquisition request of key.
Further, in the method, the mapping table of the host node in cryptographic Hash and distributed type assemblies, packet are established
It includes:
Using hash algorithm, the mapping table of the host node in cryptographic Hash and distributed type assemblies is established；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of key, comprising:
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of key using the hash algorithm.
Further, in the method, the storage organization of the mapping table is red black tree.
Further, in the method, corresponding master is obtained from the mapping table based on calculated cryptographic Hash
Node, comprising:
From the mapping table take out be more than or equal to institute calculated cryptographic Hash corresponding first host node work
For the host node of hit.
Another side according to the present invention also provides a kind of distributed caching equipment for supporting multinode, wherein the equipment packet
It includes:
First device, the mapping table of the host node for establishing in cryptographic Hash and distributed type assemblies, wherein described to reflect
It penetrates cryptographic Hash described in relation table to arrange by sequence from small to large, each host node of the corresponding cryptographic Hash sequentially row of circulation
Column, the number that each host node circulation occurs are determined based on corresponding weight and increment factor；
Second device calculates the corresponding cryptographic Hash of the key, base for the storage or acquisition request of client receive key
Corresponding host node is obtained from the mapping table in the calculated cryptographic Hash of institute；
3rd device, for establishing the client with after the connection of host node that gets, the client is to described
Host node sends the storage or acquisition request of the key.
Further, in above equipment, the first device establishes cryptographic Hash and distribution for using hash algorithm
The mapping table of host node in cluster；
The second device is calculated for the storage or acquisition request of client receive key using the hash algorithm
The corresponding cryptographic Hash of key.
Further, in above equipment, the storage organization of the mapping table is red black tree.
Further, in above equipment, the first device is more than or equal to institute for taking out from the mapping table
Host node of corresponding first host node of calculated cryptographic Hash as hit.
Another side according to the present invention also provides a kind of equipment based on calculating, wherein includes:
Processor；And
It is arranged to the memory of storage computer executable instructions, the executable instruction makes the place when executed
Manage device:
Establish the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein institute in the mapping table
It states cryptographic Hash to arrange by sequence from small to large, each host node of the corresponding cryptographic Hash sequentially cycle arrangement, each main section
The number that dot cycle occurs is determined based on corresponding weight and increment factor；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of the key, calculated based on
Cryptographic Hash obtains corresponding host node from the mapping table；
The client is established with after the connection of the host node got, the client is to described in host node transmission
The storage or acquisition request of key.
Another side according to the present invention also provides a kind of computer readable storage medium, and it is executable to be stored thereon with computer
Instruction, wherein the computer executable instructions make processor when being executed by processor:
Establish the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein institute in the mapping table
It states cryptographic Hash to arrange by sequence from small to large, each host node of the corresponding cryptographic Hash sequentially cycle arrangement, each main section
The number that dot cycle occurs is determined based on corresponding weight and increment factor；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of the key, calculated based on
Cryptographic Hash obtains corresponding host node from the mapping table；
The client is established with after the connection of the host node got, the client is to described in host node transmission
The storage or acquisition request of key.
Compared with prior art, the present invention passes through the storage or acquisition request of client (client) receive key (key), meter
The corresponding cryptographic Hash of key is calculated, corresponding host node is obtained from the mapping table based on the cryptographic Hash, next
The connection of the available host node carries out the storage or acquisition request of last key, realizes distributed node in client
Fragment, for entire Slicing procedure due to being realized in client, the request of client only needs primary network communication can be complete
At primary network communicates the acquisition or storage that can be achieved with key, greatly reduces network communication cost.
In addition, determine that host node corresponds to weight according to server hardware upgrade status in client, it is true according to corresponding weight
Determine the number that host node circulation occurs, realizes and flexibly distribute Hash slot to clustered node.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent upon:
Fig. 1 shows user terminal and redis cluster realizes Hash distribution traffic model schematic diagram；
Fig. 2 shows the clients of one embodiment of the invention to realize Hash distribution and redis cluster communication model schematic；
The slicing principle for corresponding to weight according to server state progress node that Fig. 3 shows one embodiment of the invention is illustrated
Figure.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing.
In a typical configuration of this application, terminal, the equipment of service network and trusted party include one or more
Processor (CPU), input/output interface, network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or
Any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, computer
Readable medium does not include non-temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
As shown in Fig. 2, the present invention provides a kind of distributed caching method for supporting multinode, comprising:
Step S1 establishes the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein the mapping relations
Cryptographic Hash described in table is by sequence arrangement from small to large, each host node of the corresponding cryptographic Hash sequentially cycle arrangement, often
The number that a host node circulation occurs is determined based on corresponding weight and increment factor；
Here, as shown in figure 3, the mapping table of cryptographic Hash and redis host node, can graphically be exactly figure three
Shown in Hash ring, it is assumed that present redis cluster is there are three host node, respectively n1, n2, n3, under default conditions, each main section
Corresponding two cryptographic Hash of point, the corresponding weight of node are p, and the initial value of p is 1, and increment factor i is 2, at this time if where n2
Server has carried out HardwareUpgring, and performance improves, the corresponding weight of the adjustable at this time node, such as Fig. 3 example, if given
The p that n2 is arranged is 2, that is mapped on Hash ring, and the number that n2 host node circulation occurs has been increased by i × p=4, at this time
The hit rate of n2 node is just improved compared to before, has also just achieved the purpose that fragment adaptation server performance condition；
Step S2, the storage or acquisition request of client (client) receive key (key) calculate the corresponding Kazakhstan of the key
Uncommon value obtains corresponding host node based on the calculated cryptographic Hash of institute from the mapping table；
Step S3 establishes the client with after the connection of host node that gets, and the client is to the host node
Send the storage or acquisition request of the key.
Here, the present invention passes through the storage or acquisition request of client (client) receive key (key), it is corresponding to calculate key
Cryptographic Hash, corresponding host node is obtained from the mapping table based on the cryptographic Hash, next can obtain this
The connection of host node carries out the storage or acquisition request of last key, realizes the fragment of distributed node in client, entirely
Slicing procedure is due to being realized in client, and the request of client only needs primary network communication that can complete, primary net
Network communicates the acquisition or storage that can be achieved with key, greatly reduces network communication cost.
In addition, determine that host node corresponds to weight according to server hardware upgrade status in client, it is true according to corresponding weight
Determine the number that host node circulation occurs, realizes and flexibly distribute Hash slot to clustered node.
In one embodiment of distributed caching method of support multinode of the invention, step S1 establishes cryptographic Hash and distribution
The mapping table of host node in formula cluster, comprising:
Using hash algorithm, the mapping table of the host node in cryptographic Hash and distributed type assemblies is established；
Step S2, the storage or acquisition request of client (client) receive key (key) calculate the corresponding Hash of key
Value, comprising:
The storage or acquisition request of client (client) receive key (key) calculate key pair using the hash algorithm
The cryptographic Hash answered.
Here, the mapping relations of hash algorithm the initialization cryptographic Hash and redis host node of such as Murmur can be used
Table uses same hash algorithm such as Murmur hash algorithm when the storage of key or acquisition request arrival client) it calculates
The corresponding cryptographic Hash of key out, so as to it is quick, accurately calculate cryptographic Hash.
In one embodiment of distributed caching method of support multinode of the invention, the storage organization of the mapping table
For red black tree.
Here, the storage organization of mapping table uses red black tree, because red black tree is a kind of binary sort tree, convenient for breathing out
Uncommon value carries out retrieval matching according to sequence from small to large.
In one embodiment of distributed caching method of support multinode of the invention, step S2, based on calculated Hash
Value obtains corresponding host node from the mapping table, comprising:
From the mapping table take out be more than or equal to institute calculated cryptographic Hash corresponding first host node work
For the host node of hit.
Here, using same hash algorithm such as Murmur Hash when the storage of key or acquisition request reach client
Algorithm calculates the corresponding cryptographic Hash of key, and cryptographic Hash is more than or equal to current cryptographic Hash the is then taken out from mapping table
Next one host node can obtain the host node as the host node of hit so as to the host node accurately hit
Connection, carry out the storage or acquisition request of last key.
Another side according to the present invention also provides a kind of distributed caching equipment for supporting multinode, wherein the equipment packet
It includes:
First device, the mapping table of the host node for establishing in cryptographic Hash and distributed type assemblies, wherein described to reflect
It penetrates cryptographic Hash described in relation table to arrange by sequence from small to large, each host node of the corresponding cryptographic Hash sequentially row of circulation
Column, the number that each host node circulation occurs are determined based on corresponding weight and increment factor；
Second device calculates the corresponding cryptographic Hash of the key, base for the storage or acquisition request of client receive key
Corresponding host node is obtained from the mapping table in the calculated cryptographic Hash of institute；
3rd device, for establishing the client with after the connection of host node that gets, the client is to described
Host node sends the storage or acquisition request of the key.
Further, in above equipment, the first device establishes cryptographic Hash and distribution for using hash algorithm
The mapping table of host node in cluster；
The second device is calculated for the storage or acquisition request of client receive key using the hash algorithm
The corresponding cryptographic Hash of key.
Further, in above equipment, the storage organization of the mapping table is red black tree.
Further, in above equipment, the first device is more than or equal to institute for taking out from the mapping table
Host node of corresponding first host node of calculated cryptographic Hash as hit.
Another side according to the present invention also provides a kind of equipment based on calculating, wherein includes:
Processor；And
It is arranged to the memory of storage computer executable instructions, the executable instruction makes the place when executed
Manage device:
Establish the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein institute in the mapping table
It states cryptographic Hash to arrange by sequence from small to large, each host node of the corresponding cryptographic Hash sequentially cycle arrangement, each main section
The number that dot cycle occurs is determined based on corresponding weight and increment factor；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of the key, calculated based on
Cryptographic Hash obtains corresponding host node from the mapping table；
The client is established with after the connection of the host node got, the client is to described in host node transmission
The storage or acquisition request of key.
Another side according to the present invention also provides a kind of computer readable storage medium, and it is executable to be stored thereon with computer
Instruction, wherein the computer executable instructions make processor when being executed by processor:
Establish the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein institute in the mapping table
It states cryptographic Hash to arrange by sequence from small to large, each host node of the corresponding cryptographic Hash sequentially cycle arrangement, each main section
The number that dot cycle occurs is determined based on corresponding weight and increment factor；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of the key, calculated based on
Cryptographic Hash obtains corresponding host node from the mapping table；
The client is established with after the connection of the host node got, the client is to described in host node transmission
The storage or acquisition request of key.
According to another aspect of the present invention, a kind of distributed caching for supporting multinode and equipment, the equipment are additionally provided
Include:
Compared with prior art, the present invention passes through the storage or acquisition request of client (client) receive key (key), meter
The corresponding cryptographic Hash of key is calculated, corresponding host node is obtained from the mapping table based on the cryptographic Hash, next
The connection of the available host node carries out the storage or acquisition request of last key, realizes distributed node in client
Fragment, for entire Slicing procedure due to being realized in client, the request of client only needs primary network communication can be complete
At primary network communicates the acquisition or storage that can be achieved with key, greatly reduces network communication cost.
In addition, determine that host node corresponds to weight according to server hardware upgrade status in client, it is true according to corresponding weight
Determine the number that host node circulation occurs, realizes and flexibly distribute Hash slot to clustered node.
The detailed content of each equipment and storage medium embodiment of the invention, for details, reference can be made to the correspondences of each method embodiment
Part, here, repeating no more.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, can adopt
With specific integrated circuit (ASIC), general purpose computer or any other realized similar to hardware device.In one embodiment
In, software program of the invention can be executed to implement the above steps or functions by processor.Similarly, of the invention
Software program (including relevant data structure) can be stored in computer readable recording medium, for example, RAM memory,
Magnetic or optical driver or floppy disc and similar devices.In addition, some of the steps or functions of the present invention may be implemented in hardware, example
Such as, as the circuit cooperated with processor thereby executing each step or function.
In addition, a part of the invention can be applied to computer program product, such as computer program instructions, when its quilt
When computer executes, by the operation of the computer, it can call or provide according to the method for the present invention and/or technical solution.
And the program instruction of method of the invention is called, it is possibly stored in fixed or moveable recording medium, and/or pass through
Broadcast or the data flow in other signal-bearing mediums and transmitted, and/or be stored according to described program instruction operation
In the working storage of computer equipment.Here, according to one embodiment of present invention including a device, which includes using
Memory in storage computer program instructions and processor for executing program instructions, wherein when the computer program refers to
When enabling by processor execution, method and/or skill of the device operation based on aforementioned multiple embodiments according to the present invention are triggered
Art scheme.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included in the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.This
Outside, it is clear that one word of " comprising " does not exclude other units or steps, and odd number is not excluded for plural number.That states in device claim is multiple
Unit or device can also be implemented through software or hardware by a unit or device.The first, the second equal words are used to table
Show title, and does not indicate any particular order.
Claims (10)
1. a kind of distributed caching method for supporting multinode, wherein this method comprises:
Establish the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein breathe out described in the mapping table
Uncommon value is by sequence arrangement from small to large, and sequentially cycle arrangement, each host node follow each host node of the corresponding cryptographic Hash
The number that ring occurs is determined based on corresponding weight and increment factor；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of the key, based on a calculated Hash
Value obtains corresponding host node from the mapping table；
The client is established with after the connection of the host node got, the client sends the key to the host node
Storage or acquisition request.
2. according to the method described in claim 1, wherein, establishing the mapping relations of the host node in cryptographic Hash and distributed type assemblies
Table, comprising:
Using hash algorithm, the mapping table of the host node in cryptographic Hash and distributed type assemblies is established；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of key, comprising:
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of key using the hash algorithm.
3. according to the method described in claim 1, wherein, the storage organization of the mapping table is red black tree.
4. according to the method described in claim 1, wherein, obtained from the mapping table based on calculated cryptographic Hash pair
The host node answered, comprising:
From the mapping table take out be more than or equal to institute calculated cryptographic Hash corresponding first host node as order
In host node.
5. a kind of distributed caching equipment for supporting multinode, wherein the equipment includes:
First device, the mapping table of the host node for establishing in cryptographic Hash and distributed type assemblies, wherein the mapping is closed
Be cryptographic Hash described in table is arranged by sequence from small to large, each host node of the corresponding cryptographic Hash sequentially cycle arrangement,
The number that each host node circulation occurs is determined based on corresponding weight and increment factor；
Second device calculates the corresponding cryptographic Hash of the key for the storage or acquisition request of client receive key, is based on institute
Calculated cryptographic Hash obtains corresponding host node from the mapping table；
3rd device, for establishing the client with after the connection of host node that gets, the client is to the main section
Point sends the storage or acquisition request of the key.
6. equipment according to claim 5, wherein the first device, for use hash algorithm, establish cryptographic Hash with
The mapping table of host node in distributed type assemblies；
The second device calculates key pair using the hash algorithm for the storage or acquisition request of client receive key
The cryptographic Hash answered.
7. equipment according to claim 5, wherein the storage organization of the mapping table is red black tree.
8. equipment according to claim 5, wherein the first device is big for taking out from the mapping table
In be equal to institute calculated cryptographic Hash corresponding first host node as hit host node.
9. a kind of equipment based on calculating, wherein include:
Processor；And
It is arranged to the memory of storage computer executable instructions, the executable instruction makes the processing when executed
Device:
Establish the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein breathe out described in the mapping table
Uncommon value is by sequence arrangement from small to large, and sequentially cycle arrangement, each host node follow each host node of the corresponding cryptographic Hash
The number that ring occurs is determined based on corresponding weight and increment factor；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of the key, based on a calculated Hash
Value obtains corresponding host node from the mapping table；
The client is established with after the connection of the host node got, the client sends the key to the host node
Storage or acquisition request.
10. a kind of computer readable storage medium, is stored thereon with computer executable instructions, wherein the computer is executable
Instruction makes the processor when being executed by processor:
Establish the mapping table of the host node in cryptographic Hash and distributed type assemblies, wherein breathe out described in the mapping table
Uncommon value is by sequence arrangement from small to large, and sequentially cycle arrangement, each host node follow each host node of the corresponding cryptographic Hash
The number that ring occurs is determined based on corresponding weight and increment factor；
The storage or acquisition request of client receive key calculate the corresponding cryptographic Hash of the key, based on a calculated Hash
Value obtains corresponding host node from the mapping table；
The client is established with after the connection of the host node got, the client sends the key to the host node
Storage or acquisition request.
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| CN111309260A (en) * | 2020-02-16 | 2020-06-19 | 西安奥卡云数据科技有限公司 | Data storage node selection method |
| CN115118727A (en) * | 2022-08-26 | 2022-09-27 | 北京数牍科技有限公司 | Data transmission method, device, equipment and storage medium of distributed computing architecture |
| CN115118727B (en) * | 2022-08-26 | 2022-11-29 | 北京数牍科技有限公司 | Data transmission method, device, equipment and storage medium of distributed computing architecture |
| CN115981848A (en) * | 2022-12-17 | 2023-04-18 | 郑州斋杆网络科技有限公司 | Memory database fragmentation adjustment method and device |
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Application publication date: 20190524 |