CN104142896B - A kind of buffer control method and system - Google Patents
A kind of buffer control method and system Download PDFInfo
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Abstract
A kind of buffer control method, including：Level network structure will be formed comprising the cluster of multiple servers；Each layer is formed by connecting by multiple nodes in the form of the first structure for setting in the structure；Each first structure constitutes a node in last layer network structure；The bottom includes one or more first structures, and each server in cluster is used as a node in the first structure of the bottom；First structure is formed by every n node by pre-defined rule：K node in n node of each node and this in n node is connected, 0 ＜ k ＜ n, n ＞ 1；When judging data cached renewal, update notification is sent to the first structure of top layer, be successively forwarded to the first structure of the bottom, until each node of the first structure of the bottom obtains update notification, so that each server update in cluster is data cached.The application also provides a kind of cache control system.The application ensures upgrading in time and synchronous for the local cache of each server in cluster.
Description
Technical field
The application is related to computer realm, more particularly to a kind of buffer control method and system.
Background technology
In the prior art, two kinds of caching methods be generally there are：
One kind is local cache：Data are stored on the internal memory of home server, and what is walked during access is only system bus, speed
Degree is fast.EhCache, googel MemCached, the OSCache for such as increasing income.Local cache is disposed together with application, and can take should
With the more memory headroom of server.
Another kind is distributed caching：, by network, distributed cache server is stored in using the data that need to be cached
On.Caching server cluster can also be set up, spatial cache is sufficiently large in theory；And it is empty to be not take up application server internal memory
Between.Distributed caching needs to be interacted by network, the network bandwidth is taken, in addition, the calculating performance for having serialized data disappears
Consumption, poor-performing.
For local cache, when data are changed, general realization is owned by cluster by message informing
Related data failure in CACHE (caching).When related data is needed again, each server to data source obtains data, and
It is put into CACHE.The method can not realize the data cached synchronization for upgrading in time and ensureing affairs (cluster mode).
The content of the invention
The application technical problem to be solved is to provide a kind of buffer control method and system, realizes data cached timely
Update and transactional synchronization.
In order to solve the above problems, this application provides a kind of buffer control method, including：
Level network structure will be formed comprising the cluster of multiple servers；
Wherein, each layer of the hierarchical network structure connected in the form of the first structure for setting by multiple nodes and
Into；Each first structure comprising multiple nodes constitutes a node in last layer network structure；The hierarchical network structure
The bottom include one or more first structures, each server in the cluster as the hierarchical network structure most
A node in the first structure of bottom；
The first structure is formed by every n node by pre-defined rule, and the pre-defined rule includes：In the n node
N node of each node and this in k node be connected, 0 ＜ k ＜ n, n ＞ 1；
When judging data cached renewal, the first knot of update notification to the top layer of the hierarchical network structure is sent
Structure, the first structure of the bottom is successively forwarded to by the first structure of the top layer, until the first knot of the bottom
Each node of structure obtains the update notification, i.e., each server in described cluster obtains the update notification, so that described
Each server update in cluster is data cached.
The above method can also have the characteristics that, it is described send update notification to the hierarchical network structure top layer the
One structure, the first structure of the bottom is successively forwarded to by the first structure of the top layer, until the of the bottom
Each node of one structure obtains the update notification to be included：
A host node is set in each described first structure；
The update notification is sent the host node of the first structure to the top layer；
After each node receives the update notification, following forward process is carried out：
The update notification is sent to the adjacent node in same first structure；And, if the node is non-most
Bottom layer node, the host node in the hierarchical network structure in corresponding next layer of first structure is sent to by the update notification.
The above method can also have the characteristics that methods described also includes：After each node receives the update notification,
Before carrying out the forward process, judge whether the processed update notification, if processed, abandon the update notification, such as
Fruit does not have, and just carries out the forward process.
The above method can also have the characteristics that methods described also includes：The server obtains the update notification simultaneously
Receive it is new it is data cached after, update former data cached.
The above method can also have the characteristics that the n is 10, and the k is 3, and the first structure is schemed for Petersen.
The above method can also have the characteristics that methods described also includes：
The data cached storage that will be applied in distributed caching, and, frequency of use and/or size are met into predetermined bar
The data cached storage of part is in the local cache of the server in the cluster；
After receiving one or more application same data cached access requests of access, if in the distributed caching
In the absence of the data cached of one or more of application requests access, then obtaining one or more of applications to data source please
Ask access it is data cached after, by one or more of application requests access it is data cached be sent to it is one or more of
Using, and by the data cached renewal of one or more of application requests access to the distributed caching.
The above method can also have the characteristics that the predetermined condition includes：
Frequency of use is less than Second Threshold more than the spatial cache of first threshold and occupancy；
And/or, frequency of use is more than the 3rd threshold value more than the spatial cache of the 4th threshold value and occupancy.
The above method can also have the characteristics that methods described also includes：
After receiving the cache data access request of application, if application request access is data cached positioned at initiation
The local cache of the server of cache data access request or in the distributed caching, then from described local slow
Deposit or the distributed caching in obtain that the application request accesses data cached and be sent to the application.
The above method can also have the characteristics that, described to obtain described from the local cache or the distributed caching
Access data cached of application request is simultaneously sent to the application and includes：
When the application request access data cached meet the predetermined condition and initiate the cache data access please
Have that the application request accesses in the local cache of the server asked it is data cached when, from initiating the cache data access
The data cached of the application request access is obtained in the local cache of the server of request, the application is sent to；
When the application request access data cached meet the predetermined condition and initiate the cache data access please
In the absence of the data cached of application request access in the local cache of the server asked, or, the application request is accessed
It is data cached when being unsatisfactory for the predetermined condition, judge what is accessed with the presence or absence of the application request in the distributed caching
It is data cached, if it is present obtaining the data cached of the application request access from the distributed caching, it is sent to institute
State application.
The above method can also have the characteristics that methods described also includes：
Phase between the CCU on CCU, and different server is disposed with each described server
Mutual communication；
After the same data cached access request of access for receiving multiple applications, if in the distributed caching
In the absence of data cached, the then caching for being accessed to data source the multiple application request of acquisition that the multiple application request is accessed
Data, by the multiple application request access it is data cached be sent to the multiple application, and by the multiple application request
The data cached renewal for accessing includes to the distributed caching：
Multiple CCUs be respectively received it where server on application access same data cached visit
After asking request, if in the absence of the data cached of the multiple application request access in the distributed caching, by one of them
CCU from the data source obtain that the multiple application request accesses it is data cached after be sent to it is described where it
Server on application, and the data cached renewal that the multiple application request is accessed is in the distributed caching, with
And, data cached it is sent to other center control dresses in the multiple CCU by what the multiple application request was accessed
Put the application being sent to by described other CCUs on the server at respective place.
The application also provides a kind of cache control system, and the system includes：Cluster and CCU, it is described in
Centre control device includes configuration module and update module, wherein：
The cluster includes multiple servers, and each server includes local cache system；
The configuration module is used for, and the multiple server of the cluster is formed into level network structure, and record is described
Hierarchical network structure：Wherein, each layer of the hierarchical network structure is connected by multiple nodes in the form of the first structure for setting
Connect and form；Each first structure comprising multiple nodes constitutes a node in last layer network structure；The hierarchical network
The bottom of structure includes one or more first structures, and each server in the cluster is used as the hierarchical network structure
The bottom first structure in a node；The first structure is formed by every n node by pre-defined rule, described predetermined
Rule includes：K node in n node of each node and this in the n node is connected, 0 ＜ k ＜ n, n ＞ 1；
The update module is used for：When judging data cached renewal, update notification to the hierarchical network knot is sent
The first structure of the top layer of structure, the first structure of the bottom, Zhi Daosuo are successively forwarded to by the first structure of the top layer
Each node for stating the first structure of the bottom obtains the update notification, i.e., described in each server acquisition in described cluster more
It is new to notify, so that each server update in the cluster is data cached.
Said system can also have the characteristics that the configuration module is additionally operable to：Set in each described first structure
One host node；
The update module sends the first structure of top layer of the update notification to the hierarchical network structure, by the top layer
First structure be successively forwarded to the first structure of the bottom, until each node of the first structure of the bottom is obtained
Taking the update notification includes：
The update notification is sent the host node of the first structure to the top layer；Each node receives the renewal
After notice, following forward process is carried out：The update notification is sent to the adjacent node in same first structure, and,
If the non-bottom node of node, the update notification is sent to corresponding next layer first in the hierarchical network structure
Host node in structure.
Said system can also have the characteristics that the update module is additionally operable to：Each node receives described renewal and leads to
After knowing, before carrying out the forward process, judge whether the processed update notification, if processed, abandon the renewal and lead to
Know, if it did not, just carrying out the forward process.
Said system can also have the characteristics that the server is additionally operable to：Obtain the update notification and receive new
It is data cached using the new data cached renewal original after data cached.
Said system can also have the characteristics that the n is 10, and the k is 3, and the first structure is schemed for Petersen.
Said system can also have the characteristics that the system also includes：Distributed cache system；The center control dress
Putting also includes storage control module and access control module, wherein：
The storage control module is used for, in the data cached storage that will be applied to the distributed cache system, and,
Frequency of use and/or size are met into the data cached storage of predetermined condition to the local cache system of the server in the cluster
In system；
The access control module is used for, and receives one or more applications and accesses same data cached access request
Afterwards, if not existing the data cached of one or more of application requests access in the distributed cache system, to number
According to source obtain that one or more of application requests access it is data cached after, one or more of application requests are accessed
It is data cached to be sent to one or more of applications, and the data cached renewal that one or more of application requests are accessed
To in the distributed cache system.
Said system can also have the characteristics that the predetermined condition includes：
Frequency of use is less than Second Threshold more than the spatial cache of first threshold and occupancy；
And/or, frequency of use is more than the 3rd threshold value more than the spatial cache of the 4th threshold value and occupancy.
Said system can also have the characteristics that the access control module is additionally operable to, and receive the data cached of application
After access request, if the data cached server positioned at the initiation cache data access request that the application request is accessed
Local cache system or in the distributed cache system, then from the local cache system or described distributed slow
The data cached of the application request access is obtained in deposit system and the application is sent to.
Said system can also have the characteristics that, the access control module is from the local cache system or the distribution
The data cached of the application request access is obtained in formula caching system and the application is sent to includes：
When the application request access data cached meet the predetermined condition and initiate the cache data access please
Have that the application request accesses in the local cache system of the server asked it is data cached when, it is described data cached from initiating
The data cached of the application request access is obtained in the local cache system of the server of access request, described answering is sent to
With；
When the application request access data cached meet the predetermined condition and initiate the cache data access please
In the absence of the data cached of application request access in the local cache system of the server asked, or, the application request
What is accessed is data cached when being unsatisfactory for the predetermined condition, judges to be asked with the presence or absence of the application in the distributed cache system
The data cached of access is asked, if it is present obtaining the caching that the application request is accessed from the distributed cache system
Data, are sent to the application.
Said system can also be had the characteristics that, the CCU is disposed with each described server, and not
With the intercommunication of the CCU on server；
The access control module is additionally operable to, when the access control module of the CCU on multiple servers is distinguished
After application on server where receiving it accesses same data cached access request, if the distributed caching system
In the absence of the data cached of the multiple application request access in system, by the access control module of one of CCU
From the data source obtain that the multiple application request accesses it is data cached after be sent on the server where it
Using；And notify the data cached renewal that the update module accesses the multiple application request to the distributed caching system
In system, and, data cached it is sent to what the multiple application request was accessed in the multiple CCU in other
The access control module of control device is entreated, respective place is sent to by the access control module of other CCUs
Application on server.
The application includes advantages below：
1st, while using local cache and distributed caching, lifting system performance also avoids local memory from taking excessive.
2nd, data be except can be stored in local cache at home and abroad, in can also depositing in local disk for big data, it is to avoid excessive
Local memory is taken, in addition, big data can avoid the damage of large object data network transmission and serializing directly from local acquisition
Consumption.
3rd, constitute first structure by multiple nodes and be updated notice, realize that local cache is same in the cluster of P2P patterns
Step, it is ensured that the local cache of each server in cluster upgrades in time and synchronous.Relative to broadcast type of the prior art more
New advice method, because update notification has redundancy, (by taking Petersen figures as an example, each node receives 3 times and leads in the application
Know), the problem that can avoid only notifying to cause certain applications server to be informed at 1 time.In addition, broadcast type updates logical
Know in mode, interacted between remaining server in the single application server needs and cluster of initiation update notification, interaction
Operation is excessive, and high to individual server performance requirement, individual server need to only receive three update notifications in the embodiment of the present application,
Three update notifications are sent, it is low to individual server performance requirement.
4th, submit strategy to by two sections of CCU, control synchronous transactional.
Certainly, any product for implementing the application it is not absolutely required to while reaching all the above advantage.
Brief description of the drawings
Fig. 1 is the embodiment of the present application cache control system schematic diagram；
Fig. 2 is that the embodiment of the present application Petersen diagrams are intended to；
Fig. 3 is the application cache control system block diagram.
Specific embodiment
For the purpose, technical scheme and advantage for making the application become more apparent, below in conjunction with accompanying drawing to the application
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
In addition, though show logical order in flow charts, but in some cases, can be with different from herein
Order performs shown or described step.
In the application, be managed collectively by CCU it is data cached, during using needing access cache data, Xiang Zhong
Centre control device sends access request, and application is returned to by data cached by CCU, and, by by cluster
Server group realizes local cache synchronization in the cluster of P2P patterns into level network structure, it is ensured that each server in cluster
Local cache upgrades in time and synchronous.
The embodiment of the present application provides a kind of buffer control method, including：
Level network structure will be formed comprising the cluster of multiple servers；
Wherein, each layer of the hierarchical network structure connected in the form of the first structure for setting by multiple nodes and
Into；Each first structure comprising multiple nodes constitutes a node in last layer network structure；The hierarchical network structure
The bottom include one or more first structures, each server in the cluster as the hierarchical network structure most
A node in the first structure of bottom；
The first structure is formed by every n node by pre-defined rule, and the pre-defined rule includes：In the n node
N node of each node and this in k node be connected, 0 ＜ k ＜ n, n ＞ 1；
When judging data cached renewal, the first knot of update notification to the top layer of the hierarchical network structure is sent
Structure, the first structure of the bottom is successively forwarded to by the first structure of the top layer, until the first knot of the bottom
Each node of structure obtains the update notification, i.e., each server in described cluster obtains the update notification, so that described
Each server update in cluster is data cached.
In a kind of alternative of the present embodiment, a kind of configuration process of hierarchical network structure is：
Using each application server in cluster an as node, it is attached by pre-defined rule per n node, is generated
The first structure of the bottom in the hierarchical network structure, and generate a first structure per n node；
If the bottom that the first structure of the bottom only has 1, this layer of pole network structure is top, configuration
Terminate；
If the first structure of the bottom is more than 1, using each first structure of the bottom as current layer (i.e. most bottom
The last layer of layer) in a node, every n node of the current layer network structure be attached by the pre-defined rule,
The new first structure of generation；
Continuation judges whether the first structure quantity in current layer is more than 1, if only 1, configuration terminates；If
More than 1, then using each first structure in current layer an as node in the last layer network structure of current layer, and will
The node is attached by the pre-defined rule, generates new first structure；The step is repeated, until the hierarchical network knot
Top in structure only has 1 first structure to generate；Wherein, when generating each first structure, if remaining nodes are less than n
Individual, then the node for lacking is substituted with empty node, to regenerate first structure.
In a kind of alternative of the present embodiment, the first structure for sending update notification to the top layer, by institute
The first structure for stating top layer is successively forwarded to the first structure of the bottom, until the first structure of the bottom each
Node obtains the update notification to be included：
The first structure of top layer of the transmission update notification to the hierarchical network structure, by the first knot of the top layer
Structure is successively forwarded to the first structure of the bottom, until the bottom first structure each node obtain described in more
It is new to notify to include：
A host node can be set in each described first structure；
The update notification is sent the host node of the first structure to the top layer；
After each node receives the update notification, following forward process is carried out：
The update notification is sent to the adjacent node in same first structure；And, if the node is non-most
Bottom layer node, the host node in the hierarchical network structure in corresponding next layer of first structure is sent to by the update notification.
Methods described also includes：After each node receives the update notification, before carrying out the forward process, can also sentence
It is disconnected whether the processed update notification, if processed, the update notification is abandoned, if it did not, just carrying out the forwarding
Treatment.
In a kind of alternative of the present embodiment, also include：The server obtains the update notification and receives new
It is data cached after, update former data cached.
In a kind of alternative of the present embodiment, obtain the update notification in the server and receive new caching
After data, notify that the server carries out change and comes into force, after server receives the instruction that change comes into force, delayed using described new
Deposit data updates former data cached.
In a kind of alternative of the present embodiment, the first structure is schemed for Petersen, and the n is 10, and the k is
3.Certainly, n, k can also take other values, and first structure can also be other structures, such as, n=5, k=2, first structure are one
Pentagon, etc..
In a kind of alternative of the present embodiment, also include：
The data cached storage that will be applied in distributed caching, and, frequency of use and/or size are met into predetermined bar
The data cached storage of part is in the local cache of the server in the cluster；
After receiving one or more application same data cached access requests of access, if in the distributed caching
In the absence of the data cached of one or more of application requests access, then obtaining one or more of applications to data source please
Ask access it is data cached after, by one or more of application requests access it is data cached be sent to it is one or more of
Using, and by the data cached renewal of one or more of application requests access to the distributed caching.
Predetermined condition can set as needed, and in a kind of alternative of the present embodiment, the predetermined condition includes：
Frequency of use is less than Second Threshold more than the spatial cache of first threshold and occupancy；
And/or, frequency of use is more than the 3rd threshold value more than the spatial cache of the 4th threshold value and occupancy.
In a kind of alternative of the present embodiment, also include：
After receiving the cache data access request of application, if application request access is data cached positioned at initiation
The local cache of the server of cache data access request or in the distributed caching, then from described local slow
Deposit or the distributed caching in obtain that the application request accesses data cached and be sent to the application.
It is described to obtain institute from the local cache or the distributed caching in a kind of alternative of the present embodiment
Stating the data cached of application request access and being sent to the application includes：
When the application request access data cached meet the predetermined condition and initiate the cache data access please
Have that the application request accesses in the local cache of the server asked it is data cached when, from initiating the cache data access
The data cached of the application request access is obtained in the local cache of the server of request, the application is sent to；
When the application request access data cached meet the predetermined condition and initiate the cache data access please
In the absence of the data cached of application request access in the local cache of the server asked, or, the application request is accessed
It is data cached when being unsatisfactory for the predetermined condition, judge what is accessed with the presence or absence of the application request in the distributed caching
It is data cached, if it is present obtaining the data cached of the application request access from the distributed caching, it is sent to institute
State application.
In a kind of alternative of the present embodiment, also include：
Phase between the CCU on CCU, and different server is disposed with each described server
Mutual communication；
After the same data cached access request of access for receiving multiple applications, if in the distributed caching
In the absence of data cached, the then caching for being accessed to data source the multiple application request of acquisition that the multiple application request is accessed
Data, by the multiple application request access it is data cached be sent to the multiple application, and by the multiple application request
The data cached renewal for accessing includes to the distributed caching：
Multiple CCUs be respectively received it where server on application access same data cached visit
After asking request, if in the absence of the data cached of the multiple application request access in the distributed caching, by one of them
CCU from the data source obtain that the multiple application request accesses it is data cached after be sent to it is described where it
Server on application, and the data cached renewal that the multiple application request is accessed is in the distributed caching, with
And, data cached it is sent to other center control dresses in the multiple CCU by what the multiple application request was accessed
Put the application being sent to by described other CCUs on the server at respective place.
In a kind of alternative of the present embodiment, that is applied described in the data Cun Chudao that will meet the predetermined condition should
Included with the local cache of server：
The first subconditional data will be met to be put into the first interval of the local cache of the application server of the application
Storage；
The second subconditional data of the satisfaction are stored in the application server of the application or are stored with file mode,
To meet the second subconditional data concordance list be stored in the application application server local cache second interval, institute
Concordance list is stated to indicate to meet the storage location of the described second subconditional data.
CCU obtains the caching number that the application request is accessed from the local cache or distributed caching
According to and be sent to the application in two kinds of situation, whether meet predetermined condition and process respectively according to the data that request is accessed.Due to
Meet the data cached of predetermined condition also to be stored in local cache, therefore, if requiring to access the caching for meeting predetermined condition
Data, then CCU first searches local cache, if local cache does not require data cached, the lookup point for accessing
Cloth is cached, if also not requiring the data cached of access in distributed caching, is gone data source to obtain and is required the slow of access
Deposit data.If it is required that access is unsatisfactory for the data cached of predetermined condition, directly searching distributed caching, if distributed slow
There is no the data cached of requirement access in depositing, then go data source to obtain and require the data cached of access, specifically：
1) when the application request access it is data cached meet the predetermined condition when, judge initiate it is described data cached
With the presence or absence of the data cached of application request access in the local cache of the application server of access request, if it does,
The caching that the application request is accessed is obtained from the local cache of application server for initiating the cache data access request
Data, are sent to the application；If do not deposited in the local cache for initiating the application server of the cache data access request
In the data cached of application request access, then judge to whether there is what the application request was accessed in the distributed caching
It is data cached, if it is present obtaining the data cached of the application request access from the distributed caching, it is sent to institute
State application；
2) when the application request access it is data cached be unsatisfactory for the predetermined condition when, judge the distributed caching
In with the presence or absence of the application request access it is data cached, if it is present obtained from the distributed caching it is described should
With the data cached of access is asked, the application is sent to.
It is data cached with reference to described in distributed caching and local cache storage in such scheme, relative to only using single
The mode of caching, improves systematic function, also avoids excessively taking local memory.In addition, unifying to manage by CCU
Reason is data cached, unified to be gone to obtain by CCU, it is to avoid multiple servers are simultaneously during using needing access cache data
Access data source and cause system congestion even snowslide.
The application is further illustrated below by a specific embodiment.
Except the data cached outer of full dose is deposited in distributed caching, classify to data cached, by data size with
Frequency of use, partial data, also storage is a in local cache, preferential to this partial data during using operation to delay from local
Deposit middle acquisition data.
In the present embodiment, the data that need to be cached are divided into following four class：
A classes：Take spatial cache and be more than the 5th threshold value, but number of the frequency of use less than the 6th threshold value in set period
According to.Such as：Commodity data.
B classes：Frequency of use is more than first threshold, takes spatial cache and is less than Second Threshold.Such as：Parameter during system operation
Data.
C classes：Take spatial cache and be more than the 3rd threshold value, frequency of use is more than the 4th threshold value.
D classes：Take spatial cache and be more than the 3rd threshold value, frequency of use is less than or equal to the 4th threshold value.
In the present embodiment, above-mentioned B classes and C class data are the data for meeting foregoing predetermined condition, and A classes and D classes data are not for
Meet the data of predetermined condition, therefore, A classes, D classes data are only needed to be stored on distributed caching, and B classes and C classes are removed in distribution
Deposit outer in caching, while copy need to be deposited in local cache.
The cache control system of the present embodiment is based on framework shown in Fig. 2, as shown in Fig. 2 including：CCU 101,
Distributed caching 102, using A clusters 103, data source (Datastore) 104, and applies B105, CCU 101
Be in logic entity, this example in order to illustrate it is convenient individually draw, physically CCU 101 can be deployed in and apply A
On each application server in cluster 103, wherein：
CCU 101：For being managed to the local cache under cluster environment, shared between different application
It is data cached to be managed, management is synchronized to B, C the class data in the local cache and distributed caching of same application.In
Centre control device can be disposed on the application server together with applying, with loss of the application without network service etc.In this
Centre control device can be a JAR (Java Archive, Java archive file) bags or dll program libraries etc..
Distributed caching (center cache) 102, for the control according to CCU, stores all caching numbers
According to, including the class data of above-mentioned A, B, C, D tetra-；Wherein it is possible to being based on distributed hash table algorithm carries out distributed buffer, such as
Memcache, tair etc..
Using A clusters 103：It is a cluster environment using A, all application deployment A on each server, and every
All contain local cache (such as ehCache googel MemCached) on server.Using each server sheet in A clusters
Data in ground caching are all the subsets of data in distributed caching, and each server is cached according to the control of CCU
Above-mentioned B classes, C class data.
The true source of data needed for storage application, generally database or file system in data source 104, such as mysql,
TFS (Taobao File System, Taobao's file system).
Using B105：Cluster environment or stand-alone environment are may also be, is stand-alone environment in the present embodiment for convenience of describing.
Using the scene relation of A and application B：It is domestic consumer using A user；Using B used to keeper,
For configuring relevant parameter is run using A.
In the embodiment, two intervals can be divided into using the local cache in each server in A clusters, in first interval
The B class data of storage CCU distribution；The concordance list of the C class data of second interval storage CCU distribution, C
Class data are preserved in addition with file mode or in internal memory, and the storage location of C class data is indicated in concordance list.
CCU can be used according to FIFO (First Input First Output, FIFO) and at most
C class data, are put into second interval and are managed by number of times scheduling algorithm, so as to avoid the damage of big data network transmission and serializing
Consumption.
The first interval tables of data and second interval tables of data of a CCU application configuration good at managing (suppose certain
Individual configuration parameter need to be through conventional, then the title of this parameter is configured in table), labeled data will be delayed from local in table
Middle acquisition is deposited, is obtained not then, can just obtained in distributed caching 102 and do not arrived then then to acquisition in distributed caching 102
Data source 104 is obtained.
A, D class data all can be by CCUs directly to acquisition in distributed caching 102, in distributed caching
Obtained in 102 and do not arrive then then data source 104 and obtain.
When starting for the first time using A cluster environment, the server that First starts can be first successively by CCU
All B, C class data are loaded, is placed into distributed caching and local cache, by center during following other startup of server
Control device just directly can load data into local cache and suffer from distributed caching.
When applications have modified B, C class data, sent to CCU and notified, triggering is based on Petersen graphic calculations
The P2P mode data synchronizing processes of method, it is ensured that the local cache of all services is all with portion mirror image.
As shown in Fig. 2 be the structure of Petersen figures, including 10 nodes, each node can be with other three nodes
Connection.
Mechanism to synchronizing management between the local cache of application cluster can be P2P patterns, based on Petersen
Nomography is realized.
Assuming that using in A clusters include N platform servers.
The cluster is configured to the hierarchical network structure of Petersen figures as follows：
Wherein, each layer of the hierarchical network structure is formed by connecting by multiple nodes in the form of Petersen figures；Often
The one Petersen figures comprising multiple nodes constitute the node in last layer network structure；The bottom of the hierarchical network structure
Including one or more Petersen figures, each server in cluster is used as a section in the Petersen figures of the bottom
Point.
In Petersen figures, comprising 10 nodes, each node connects with other 3 nodes in same Petersen figures
Connect.If more than 1 Petersen figures are generated in same layer structure, each the Petersen figure being currently generated as one
Node, then one Petersen of every 10 node recompositions figures；The step is repeated, until ultimately generating one
Petersen schemes, and during Petersen figures are generated, if generate certain Petersen figures, nodes are less than 10,
Replaced with specific empty node (null), Petersen figures are regenerated after 10 nodes of composition.
Wherein, each Petersen figure can specify a node as the host node of the Petersen figures.
By above-mentioned steps, a Petersen figure for nesting is generated, the Petersen figures of the bottom are by actual
Server node is constituted, and top is a Petersen figure.The hierarchical network structure based on Petersen figures of above-mentioned generation
Method can also be applied to generation with non-Petersen figures first structure hierarchical network structure.
The cache synchronization step of the P2P patterns based on above-mentioned Petersen figures is as follows：
Step 401, data cached update notification is transmitted to the master of the top Petersen figures of the hierarchical network structure
Node.
Step 402, after each node receives update notification, first judges whether to treat the update notification, if do not located
Managed, adjacent three nodes of same layer will be transmitted to update notification.
Specifically, after the host node of top layer Petersen figures receives update notification, notifying with the adjacent node of layer, with layer
After adjacent node receives update notification, if do not treated, continue to forward update notification to adjacent three sections of same layer
Point, the like, the update notification can be forwarded to all nodes of same layer.
So each node of same layer can at most be connected to three notices, but need to only process notice for the first time.Such place
Reason mode so that node is only processed when first time update notification is received, it is to avoid redundant operation.
Step 403, if node or Petersen figures, rather than server, then reinform this Petersen figures
Host node, until notify reach bottom Petersen figures server node；
Step 404, after server node receives update notification, during newData is read internal memory, and notifies central control
Successful data reception is completed device.
Step 405, after Servers-all all notifies that CCU receives data success, CCU notifies institute
There is server to carry out change to come into force, each server covers former data using newData, reinforms CCU and activates into
Work(.
Step 406, when Servers-all all notifies to activate successfully, whole process terminates.
In addition to the node of the Petersen figures of the bottom is for server, other nodes are logical node, at logical node
The operation for managing update notification is completed by CCU, until update notification reaches the server node of the bottom.Each service
CCU on device is interacted, completion notice operation.
In the prior art, for cluster environment, data cached synchronization is usually wide by a server between each server
Broadcast the cache invalidation of other servers of message informing.Caching is first asked during other servers access next time data, if do not ordered
In, just obtain data to True Data source and update caching simultaneously again.The method in time and can not ensure affairs (cluster mode)
It is synchronous.In the present embodiment, after an application server renewal is data cached, by the P2P pattern synchronizations based on Petersen figures
Update the data cached of other application server, it is ensured that the efficiency of buffer update.
If application server synchronized update is failed, server that can be by CCU directly with failure leads to
Letter, is updated；Or directly the local cache failure of the application server for failing is updated, passively by Passive Mode
Schema update refers to only to make data failure, subsequently need to use failure it is data cached when, obtain new caching from data source
Data, update the data cached of failure；Or notify that all application servers carry out rolling back action, this reality by CCU
Apply in example, rolling back action refers to the state for returning to and carrying out before data cached renewal, there is provided meet more traffic performances
The selection of demand.
Such scheme has the following advantages that：
1st, the characteristics of being schemed using Petersen, uses spreading news and new data cached bag for P2P model virus formulas.
2nd, every server can only be fixed to receive buffer update notice and send notifying three times for buffer update, simply may be used
Control.
3rd, using two sections of ways of submission, two sections of ways of submission in the application are after server receives update notification, new
It is data cached read internal memory, and notify that successful data reception is completed CCU, Servers-all is all notified
After CCU receives data success, CCU notifies that Servers-all carries out change and comes into force, and each server makes
Data cached with new data cached covering original, each server reinforms CCU and activates successfully, so as to ensure affairs
Uniformity, make the data in cluster in each server local caching all consistent.Relative in the prior art, for collection group rings
Border, data cached synchronization is usually to be lost by a caching for server broadcast message informing other servers between each server
Effect.Caching is first asked during other servers access next time data, if miss, just data is obtained simultaneously while more to data source
The mode of new caching, the application can in time carry out data cached renewal and and ensure the synchronization of affairs (cluster mode).
The embodiment of the present application also provides a kind of cache control system, as shown in figure 3, including：
Cluster 301 and CCU 302, the cluster 301 include multiple servers 3011, each server bag
System containing local cache 3012；The CCU 302 includes configuration module 3021 and update module 3022, wherein
The configuration module 3021 is used for, and the multiple server of the cluster is formed into level network structure, record
The hierarchical network structure：Wherein, the shape of first structure of each layer of the hierarchical network structure by multiple nodes to set
Formula is formed by connecting；Each first structure comprising multiple nodes constitutes a node in last layer network structure；The level
The bottom of network structure includes one or more first structures, and each server in the cluster is used as the hierarchical network
A node in the first structure of the bottom of structure；The first structure is formed by every n node by pre-defined rule, described
Pre-defined rule includes：K node in n node of each node and this in the n node is connected, 0 ＜ k ＜ n, n ＞ 1；
The update module 3022 is used for：When judging data cached renewal, update notification to the level net is sent
The first structure of the top layer of network structure, is successively forwarded to the first structure of the bottom, directly by the first structure of the top layer
Each node to the first structure of the bottom obtains the update notification, i.e., each server in described cluster obtains institute
Update notification is stated, so that each server update in the cluster is data cached.
The configuration module 3021 is additionally operable to：A host node is set in each described first structure；
The update module 3022 sends the first structure of update notification to the top layer of the hierarchical network structure, by described
The first structure of top layer is successively forwarded to the first structure of the bottom, until each section of the first structure of the bottom
Point obtains the update notification to be included：
The update notification is sent the host node of the first structure to the top layer；Each node receives the renewal
After notice, following forward process is carried out：The update notification is sent to the adjacent node in same first structure, and,
If the non-bottom node of node, the update notification is sent to corresponding next layer first in the hierarchical network structure
Host node in structure.
In a kind of alternative of the present embodiment, the update module 3022 is additionally operable to：Each node receives described
After update notification, before carrying out the forward process, judge whether the processed update notification, if processed, abandoning should
Update notification, if it did not, just carrying out the forward process.
In a kind of alternative of the present embodiment, the server 3011 is additionally operable to：Obtain the update notification and connect
Receive it is new it is data cached after, it is data cached using the new data cached renewal original.
In a kind of alternative of the present embodiment, the n is 10, and the k is 3, and the first structure is Petersen
Figure.
In a kind of alternative of the present embodiment, the system also includes：Distributed cache system 303；The center
Control device 302 also includes storage control module 3023 and access control module 3024, wherein：
The storage control module 3023 is used for, the data cached storage that will be applied to the distributed cache system 303
In, and, frequency of use and/or size are met into the data cached storage of predetermined condition to the sheet of the server in the cluster
In ground caching system 3012；
The access control module 3024 is used for, and receiving one or more application same data cached access of access please
After asking, if in the absence of the data cached of one or more of application requests access in the distributed cache system 303,
To data source obtain that one or more of application requests access it is data cached after, one or more of application requests are visited
Ask it is data cached be sent to one or more of applications, and by one or more of application requests access it is data cached
In updating the distributed cache system 303.
In a kind of alternative of the present embodiment, the predetermined condition includes：
Frequency of use is less than Second Threshold more than the spatial cache of first threshold and occupancy；
And/or, frequency of use is more than the 3rd threshold value more than the spatial cache of the 4th threshold value and occupancy.
In a kind of alternative of the present embodiment, the access control module 3024 is additionally operable to, and receives the slow of application
After deposit data access request, if the application request access it is data cached positioned at initiating cache data access request
The local cache system 3012 of server or in the distributed cache system 303, then from the local cache system
The data cached of the application request access is obtained in 3012 or described distributed cache systems 303 and the application is sent to.
In a kind of alternative of the present embodiment, the access control module 3024 is from the local cache system 3012
Or obtain that the application request accesses in the distributed cache system 303 data cached and be sent to the application and include：
When the application request access data cached meet the predetermined condition and initiate the cache data access please
Have that the application request accesses in the local cache system of the server asked it is data cached when, it is described data cached from initiating
The data cached of the application request access is obtained in the local cache system 3012 of the server of access request, is sent to described
Using；
When the application request access data cached meet the predetermined condition and initiate the cache data access please
In the absence of the data cached of application request access in the local cache system 3012 of the server asked, or, the application
It is data cached when being unsatisfactory for the predetermined condition that request is accessed, and judges to whether there is institute in the distributed cache system 303
The data cached of application request access is stated, if it is present obtaining the application request from the distributed cache system 303
What is accessed is data cached, is sent to the application.
In a kind of alternative of the present embodiment, the CCU is disposed with each described server 3011
The intercommunication of the CCU 302 on 302, and different server；
The access control module 3024 is additionally operable to, when the access control of the CCU 302 on multiple servers
Module 3024 be respectively received it where server on application access same data cached access request after, if described
In the absence of the data cached of the multiple application request access in distributed cache system 303, by one of center control dress
Put 302 access control module 3024 from the data source obtain that the multiple application request accesses it is data cached after be sent to
Application on the server where it, and notify the caching that the update module 3022 accesses the multiple application request
Data are updated in the distributed cache system 303, and, by data cached being sent to of the multiple application request access
The access control module of remaining other CCUs in the multiple CCU, by described other center control dresses
The access control module put is sent to the application on the server at respective place.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly
Ground, each module/unit in above-described embodiment can be realized in the form of hardware, it would however also be possible to employ the shape of software function module
Formula is realized.The application is not restricted to the combination of the hardware and software of any particular form.
Claims (20)
1. a kind of buffer control method, it is characterised in that including：
Level network structure will be formed comprising the cluster of multiple servers；
Wherein, each layer of the hierarchical network structure is formed by connecting by multiple nodes in the form of the first structure for setting；Often
One first structure comprising multiple nodes constitutes a node in last layer network structure；The most bottom of the hierarchical network structure
Layer includes one or more first structures, and each server in the cluster is used as the bottom of the hierarchical network structure
A node in first structure；
The first structure is formed by every n node by pre-defined rule, and the pre-defined rule includes：It is every in the n node
K node in n node of individual node and this is connected, 0 ＜ k ＜ n, n ＞ 1；
When judging data cached renewal, the first structure of update notification to the top layer of the hierarchical network structure is sent, by
The first structure of the top layer is successively forwarded to the first structure of the bottom, until the bottom first structure it is every
Individual node obtains the update notification, i.e., each server in described cluster obtains the update notification, so that in the cluster
Each server update it is data cached.
2. the method for claim 1, it is characterised in that the transmission update notification to the top of the hierarchical network structure
The first structure of layer, is successively forwarded to the first structure of the bottom, until the most bottom by the first structure of the top layer
Each node of the first structure of layer obtains the update notification to be included：
A host node is set in each described first structure；
The update notification is sent the host node of the first structure to the top layer；
After each node receives the update notification, following forward process is carried out：
The update notification is sent to the adjacent node in same first structure；And, if the non-bottom of the node
Node, the host node in the hierarchical network structure in corresponding next layer of first structure is sent to by the update notification.
3. method as claimed in claim 2, it is characterised in that methods described also includes：Each node receives the renewal
After notice, before carrying out the forward process, judge whether the processed update notification, if processed, abandon the renewal
Notify, if it did not, just carrying out the forward process.
4. the method for claim 1, it is characterised in that methods described also includes：The server obtains the renewal
Notify and receive it is new it is data cached after, update former data cached.
5. the method as described in Claims 1-4 is any, it is characterised in that the n is 10, the k is 3, the first structure
For Petersen schemes.
6. the method as described in Claims 1-4 is any, it is characterised in that methods described also includes：
The data cached storage that will be applied in distributed caching, and, frequency of use and/or size are met into predetermined condition
It is data cached to store in the local cache of the server in the cluster；
After receiving one or more application same data cached access requests of access, if do not deposited in the distributed caching
In the data cached of one or more of application requests access, then obtain one or more of application requests to data source and visit
Ask it is data cached after, by one or more of application requests access it is data cached be sent to it is one or more of should
With, and by the data cached renewal of one or more of application requests access to the distributed caching.
7. method as claimed in claim 6, it is characterised in that the predetermined condition includes：
Frequency of use is less than Second Threshold more than the spatial cache of first threshold and occupancy；
And/or, frequency of use is more than the 3rd threshold value more than the spatial cache of the 4th threshold value and occupancy.
8. method as claimed in claim 6, it is characterised in that methods described also includes：
After receiving the cache data access request of application, if application request access is data cached described positioned at initiating
The local cache of the server of cache data access request or in the distributed caching, then from the local cache or
The data cached of the application request access is obtained in the distributed caching and the application is sent to.
9. method as claimed in claim 8, it is characterised in that described to be obtained from the local cache or the distributed caching
Taking the data cached of the application request access and being sent to the application includes：
Data cached when application request access meets the predetermined condition and initiates the cache data access request
Have that the application request accesses in the local cache of server it is data cached when, from initiating the cache data access request
Server local cache in obtain that the application request accesses it is data cached, be sent to the application；
Data cached when application request access meets the predetermined condition and initiates the cache data access request
In the absence of the data cached of application request access in the local cache of server, or, it is slow that the application request is accessed
When deposit data is unsatisfactory for the predetermined condition, the caching accessed with the presence or absence of the application request in the distributed caching is judged
Data, if it is present obtaining the data cached of the application request access from the distributed caching, are sent to described answering
With.
10. method as claimed in claim 6, it is characterised in that methods described also includes：
Phase intercommunication between the CCU on CCU, and different server is disposed with each described server
Letter；
After the same data cached access request of access for receiving multiple applications, if do not deposited in the distributed caching
In data cached, the then caching number for being accessed to data source the multiple application request of acquisition that the multiple application request is accessed
According to data cached by the access of the multiple application request is sent to the multiple application, and the multiple application request is visited
The data cached renewal asked includes to the distributed caching：
Multiple CCUs be respectively received it where server on application access same data cached access please
After asking, if in the absence of the data cached of the multiple application request access in the distributed caching, by one of center
Control device from the data source obtain that the multiple application request accesses it is data cached after be sent to the clothes where it
Application on business device, and the data cached renewal that the multiple application request is accessed is in the distributed caching, and, will
The multiple application request access it is data cached be sent in the multiple CCU other CCUs by
Described other CCUs are sent to the application on the server at respective place.
11. a kind of cache control systems, it is characterised in that the system includes：Cluster and CCU, the center
Control device includes configuration module and update module, wherein：
The cluster includes multiple servers, and each server includes local cache system；
The configuration module is used for, and the multiple server of the cluster is formed into level network structure, records the level
Network structure：Wherein, each layer of the hierarchical network structure connected in the form of the first structure for setting by multiple nodes and
Into；Each first structure comprising multiple nodes constitutes a node in last layer network structure；The hierarchical network structure
The bottom include one or more first structures, each server in the cluster as the hierarchical network structure most
A node in the first structure of bottom；The first structure is formed by every n node by pre-defined rule, the pre-defined rule
Including：K node in n node of each node and this in the n node is connected, 0 ＜ k ＜ n, n ＞ 1；
The update module is used for：When judging data cached renewal, update notification to the hierarchical network structure is sent
The first structure of top layer, the first structure of the bottom is successively forwarded to by the first structure of the top layer, until it is described most
Each node of the first structure of bottom obtains the update notification, i.e., each server in described cluster obtains described renewal and leads to
Know, so that each server update in the cluster is data cached.
12. systems as claimed in claim 11, it is characterised in that
The configuration module is additionally operable to：A host node is set in each described first structure；
The update module sends the first structure of top layer of the update notification to the hierarchical network structure, by the of the top layer
One structure is successively forwarded to the first structure of the bottom, until each node of the first structure of the bottom obtains institute
Stating update notification includes：
The update notification is sent the host node of the first structure to the top layer；Each node receives the update notification
Afterwards, following forward process is carried out：The update notification is sent to the adjacent node in same first structure, and, if
The non-bottom node of node, corresponding next layer of first structure in the hierarchical network structure is sent to by the update notification
In host node.
13. systems as claimed in claim 12, it is characterised in that the update module is additionally operable to：Each node receives institute
After stating update notification, before carrying out the forward process, judge whether the processed update notification, if processed, abandon
The update notification, if it did not, just carrying out the forward process.
14. systems as claimed in claim 11, it is characterised in that the server is additionally operable to：Obtain the update notification simultaneously
Receive it is new it is data cached after, it is data cached using the new data cached renewal original.
15. system as described in claim 11 to 14 is any, it is characterised in that the n is 10, the k is 3, described first
Structure is schemed for Petersen.
16. system as described in claim 11 to 14 is any, it is characterised in that the system also includes：Distributed caching system
System；The CCU also includes storage control module and access control module, wherein：
The storage control module is used for, in the data cached storage that will be applied to the distributed cache system, and, will make
Meet the data cached storage of predetermined condition to the local cache system of the server in the cluster with frequency and/or size
In；
The access control module is used for, after receiving one or more application same data cached access requests of access, such as
In the absence of the data cached of one or more of application requests access in really described distributed cache system, then obtained to data source
Take that one or more of application requests access it is data cached after, the caching number that one or more of application requests are accessed
According to being sent to one or more of applications, and the data cached renewal that one or more of application requests are accessed is described in
In distributed cache system.
17. systems as claimed in claim 16, it is characterised in that the predetermined condition includes：
Frequency of use is less than Second Threshold more than the spatial cache of first threshold and occupancy；
And/or, frequency of use is more than the 3rd threshold value more than the spatial cache of the 4th threshold value and occupancy.
18. systems as claimed in claim 16, it is characterised in that the access control module is additionally operable to, and receives application
After cache data access request, if application request access is data cached positioned at the initiation cache data access request
Server local cache system or in the distributed cache system, then from the local cache system or described
The data cached of the application request access is obtained in distributed cache system and the application is sent to.
19. systems as claimed in claim 18, it is characterised in that the access control module from the local cache system or
The data cached of the application request access is obtained in the distributed cache system and the application is sent to includes：
Data cached when application request access meets the predetermined condition and initiates the cache data access request
Have that the application request accesses in the local cache system of server it is data cached when, from initiating the cache data access
The data cached of the application request access is obtained in the local cache system of the server of request, the application is sent to；
Data cached when application request access meets the predetermined condition and initiates the cache data access request
In the absence of the data cached of application request access in the local cache system of server, or, the application request is accessed
It is data cached when being unsatisfactory for the predetermined condition, judge to be visited with the presence or absence of the application request in the distributed cache system
That asks is data cached, if it is present the data cached of the application request access is obtained from the distributed cache system,
It is sent to the application.
20. systems as claimed in claim 16, it is characterised in that
Be disposed with the CCU on each described server, and the CCU on different server it
Intercommunication；
The access control module is additionally operable to, when the access control module of the CCU on multiple servers is received respectively
After application on server where to it accesses same data cached access request, if in the distributed cache system
In the absence of the multiple application request access it is data cached, by the access control module of one of CCU from institute
State that data source obtains that the multiple application request accesses it is data cached after the application that is sent on the server where it；
And the data cached renewal that the update module accesses the multiple application request is notified in the distributed cache system,
And, data cached it is sent to other center controls in the multiple CCU by what the multiple application request was accessed
The access control module of device, the server at respective place is sent to by the access control module of other CCUs
On application.
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| CN105701219B (en) * | 2016-01-14 | 2019-04-02 | 北京邮电大学 | A kind of implementation method of distributed caching |
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| CN106921648A (en) * | 2016-11-15 | 2017-07-04 | 阿里巴巴集团控股有限公司 | Date storage method, application server and remote storage server |
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| CN106790705A (en) * | 2017-02-27 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of Distributed Application local cache realizes system and implementation method |
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| CN107301048B (en) * | 2017-06-23 | 2020-09-01 | 北京中泰合信管理顾问有限公司 | Internal control management system of application response type shared application architecture |
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| CN108536481A (en) * | 2018-02-28 | 2018-09-14 | 努比亚技术有限公司 | A kind of application program launching method, mobile terminal and computer storage media |
| CN108446356B (en) * | 2018-03-12 | 2023-08-29 | 上海哔哩哔哩科技有限公司 | Data caching method, server and data caching system |
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