CN102333130A - Method and system for accessing cache server and intelligent cache scheduler - Google Patents
Method and system for accessing cache server and intelligent cache scheduler Download PDFInfo
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Abstract
The invention relates to the technical fields of Internet and content delivery networks, in particular to a method and a system for accessing a cache server and an intelligent cache scheduler, which are used for solving the problem of how to avoid the wasting of storage resources of a cache server. The method comprises that: a first cache server transmits a query request to the intelligent cache scheduler when determining that the first cache server does not store data required by a terminal according to a received access request; the intelligent cache scheduler finds a second cache server storing the data required by the terminal according to the query request and pre-stored data index relationships, and transmits the information of the second cache server to the first cache server; the first cache server transmits the received information of the second cache server to the terminal; and the terminal is connected to the second cache server to acquire the required data. Therefore, by the method provided by the invention, the wasting of the storage resources of the cache server can be avoided.
Description
Technical field
The present invention relates to the Internet and content distributing network technical field, relate in particular to a kind of method, system and buffer memory intelligent scheduler of access cache server.
Background technology
At present, in order to improve the access efficiency of user to server, buffer memory (Cache) server is preserved the data on the server.When the user need conduct interviews to the data in the server, by DNS with the user be directed to the nearest Cache servers of this user distance on, make the user from these Cache servers, or from server, obtain related data through these Cache servers.As shown in Figure 1, detailed process is following:
After step 15, server received this access request, the data that this access request is indicated sent to Cache servers A;
In above-mentioned steps, in advance at domain name system (Domain Name System, DNS) the middle corresponding relation of preserving between user and Cache servers, Cache servers and server and user and the server.
The inventor finds that there is following problem in the access mode to Cache servers in the prior art:
First; When the user need conduct interviews to a certain Cache servers, if these Cache servers are not preserved the required data of this user, these Cache servers just needed access server; And therefrom obtain desired data; Therefore, this method makes each Cache server all can conduct interviews to server, has increased the workload of server; For example have Cache servers A and Cache servers B, the required data of user are kept on the Cache servers B, but because Cache servers A distance users is more nearer; Therefore DNS is directed to the user on the Cache servers A, Cache servers A access server, and server sends to Cache servers A with related data; Cache servers A preserves and gives the user with this data forwarding; It is thus clear that even if preserve the required data of user on these method Cache servers B, Cache servers A also must conduct interviews to server; Therefore, increased the workload of server;
The second, server need be kept at the data of self in each Cache servers, makes all Cache servers all preserve part or all of identical data, has wasted storage resources greatly.
Summary of the invention
The embodiment of the invention provides a kind of method, system and buffer memory intelligent scheduler of access cache server, is used to solve the problem of caching server storage resources of how avoiding waste.
A kind of method of access cache server, said method comprises:
The access request of the indicating terminal desired data that the first caching server receiving terminal is sent judges self whether to preserve this terminal desired data according to said access request, when confirming not preserve, sends query requests to the buffer memory intelligent scheduler;
Said buffer memory intelligent scheduler concerns second caching server that finds out the storage terminal desired data according to the data directory of said query requests and preservation in advance, and the said second caching server information is sent to said first caching server;
The said second caching server information that said first caching server will receive sends to said terminal;
Said terminal is connected to said second caching server and removes to obtain desired data.
A kind of caching server, said caching server comprises:
The first receiving record module is used for the access request of the indicating terminal desired data that receiving terminal sends; And other caching server information that receive the transmission of buffer memory intelligent scheduler; Said other caching server be said intelligent scheduling server after receiving query requests, the corresponding caching server that stores said terminal desired data that finds out;
Judge module is used for judging self whether to preserve the required data in said terminal according to the said access request that the said first receiving record module receives;
First sending module is used for when said judge module is confirmed not preserve the terminal desired data, sending said query requests to said buffer memory intelligent scheduler; And said other caching server information that the said first receiving record module is received send to said terminal.
A kind of buffer memory intelligent scheduler, said buffer memory intelligent scheduler comprises:
The second receiving record module is used to receive the query requests that first caching server is sent; Said query requests be said first caching server after the access request that receives the indicating terminal desired data of sending at the terminal, judge and send when self not storing this terminal desired data;
Search module, said query requests that is used for receiving according to the second receiving record module and the data directory relation of preserving in advance find out second caching server of the said terminal of storage desired data;
Second sending module, be used for said search module searches to the second caching server information send to said first caching server.
A kind of access system, said system comprises:
At least two caching servers are used for the access request of the indicating terminal desired data that receiving terminal sends; Judge self whether to preserve this terminal desired data according to said access request, when confirming not preserve, send query requests to the buffer memory intelligent scheduler; And receive said buffer memory intelligent scheduler other caching server information that send, that store said terminal desired data and send to said terminal, said other caching servers are in said at least two caching servers;
Said buffer memory intelligent scheduler is used to receive said query requests; Find out said other caching servers of storage terminal desired data according to the data directory relation of said query requests and preservation in advance; Other caching server information that find out are sent to the caching server that sends said query requests.
It is thus clear that the method that adopts the embodiment of the invention to provide when caching server confirms self not preserve the required data in terminal, is directly initiated query requests to the buffer memory intelligent scheduler; After the buffer memory intelligent scheduler confirms that which platform caching server is the required data in terminal be kept on; The relevant information of the caching server of confirming is sent to this terminal; After this terminal receives information, be connected with the pairing caching server of this information, and therefrom obtain desired data; It is thus clear that; This method can make when caching server is not preserved a certain data, need from server, not obtain and preserve these data, therefore; Reduce the quantity of the data of the required preservation of caching server greatly, avoided the storage resources of waste caching server.
Description of drawings
Fig. 1 is the process flow sketch map of terminal access caching server in the prior art;
The process flow sketch map of the terminal access caching server that Fig. 2 provides for the embodiment of the invention;
The process flow sketch map of the detailed terminal access caching server that Fig. 3 provides for the embodiment of the invention;
The structural representation of a kind of caching server that Fig. 4 provides for the embodiment of the invention;
The structural representation of a kind of buffer memory intelligent scheduler that Fig. 5 provides for the embodiment of the invention;
The system configuration sketch map of a kind of access cache server that Fig. 6 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method of access cache server, and this method can be worked as caching server when confirming self not preserve the required data in terminal, directly initiates query requests to the buffer memory intelligent scheduler; After the buffer memory intelligent scheduler confirms that which platform caching server is the required data in terminal be kept on; The relevant information of the caching server of confirming is sent to this terminal; After this terminal receives information, be connected with the pairing caching server of this information, and therefrom obtain desired data; It is thus clear that; This method can make when caching server is not preserved a certain data, need from server, not obtain and preserve these data, therefore; Reduce the quantity of the data of the required preservation of caching server greatly, avoided the storage resources of waste caching server.As shown in Figure 2, detailed process is following:
Concrete, the buffer memory intelligent scheduler is preserved the data directory relation in advance, and this data directory relation is used to indicate data and belongs to that caching server;
Concrete, the concrete operations of step 24 are following:
Said terminal is connected to said second caching server, acquisition request data; When said second caching server is judged this locality and stored said terminal desired data, transmit said data and give said terminal.
Preferable, because server is sending in the process of data the phenomenon that might produce error in data or lose to caching server; This moment, the data directory of buffer memory intelligent scheduler concerned institute's information recorded; Be not inconsistent with the data of the actual preservation of caching server; For fear of this phenomenon; When the terminal can't obtain data from the second buffer memory service, when promptly said second caching server is judged this locality and do not stored said terminal desired data, send data to said buffer memory intelligent scheduler and obtain failure reporting; Corresponding index record in the local data directory relation of preserving of said buffer memory intelligent scheduler deletion.
Concrete, specifically comprise according to second caching server that said query requests and the data directory relation of preserving in advance find out the storage terminal desired data at the intelligent scheduler of buffer memory described in the step 22:
Said buffer memory intelligent scheduler finds out one or more caching servers of storage terminal desired data according to the data directory relation of said query requests and preservation in advance;
If when finding out a caching server, with the caching server that finds out as second caching server;
If when finding out a plurality of caching server, from said a plurality of caching servers, select a caching server according to the system of selection that is provided with in advance, and with the caching server of selecting as second caching server.
Preferable, said if when finding out a plurality of caching server, from said a plurality of caching servers, select a caching server according to the system of selection that is provided with in advance, and the caching server of selecting is comprised as second caching server:
From a plurality of caching servers that find out, select to be in one or more caching servers of idle condition;
If when selecting a caching server that is in idle condition, with this caching server of selecting as second caching server;
If when selecting a plurality of caching server that is in idle condition, therefrom select a highest caching server of weight as second caching server.
Concrete, judge according to said access request when first caching server and to send said data to said terminal when self preserving this terminal desired data.
Below with the specific embodiment introduction:
The embodiment of the invention provides the method for access cache server in; Relate to the buffer memory intelligent scheduler in this method; In this buffer memory intelligent scheduler, preserve the data directory relation in advance; This data directory relation is used for designation data and belongs to which caching server, i.e. the corresponding relation of data and caching server; Like Fig. 3, this method detailed process is following:
Preferable, in order to guarantee that in subsequent operation caching server A accurately to terminal return data or other information, writes down this terminal information when caching server A receives access request; This information can be positional information, for example the terminal iidentification of the IP address at terminal etc. or unique expression terminal identity;
Preferable, caching server A can be according to the end message that writes down in advance, and the required data in terminal that this access request is indicated send to the terminal, and send the report that data are obtained success to the buffer memory intelligent scheduler;
Preferable, for the data directory relation that guarantees to preserve in the buffer memory intelligent scheduler meets the actual conditions of preserving data in the caching server, caching server A after this step sends the report that data are obtained success to the buffer memory intelligent scheduler;
Preferable; In order to guarantee that the buffer memory intelligent scheduler can return relevant information to caching server accurately in subsequent operation; After the buffer memory intelligent scheduler receives this query requests; Record sends the information of the caching server A of query requests, and this information can be the sign of caching server IP address, positional information or this caching server of unique identification;
Preferable, the buffer memory intelligent scheduler is according to the information of the caching server A of record in advance, and the information of the caching server B that finds out is sent to caching server A;
Preferable, caching server A is according to the terminal information that writes down in advance, and the information of the caching server B that just receives sends to the terminal;
Preferable, because server is sending in the process of data the phenomenon that might produce error in data or lose to caching server; This moment, the data directory of buffer memory intelligent scheduler concerned institute's information recorded; Be not inconsistent with the data of the actual preservation of caching server; For fear of this phenomenon; When the terminal can't successfully obtain data from the buffer memory server B, this caching server B sent the report that data are obtained failure to the buffer memory intelligent scheduler; After step 306 and step 311, caching server A sends the report that data are obtained success or failure to the buffer memory intelligent scheduler; When the buffer memory intelligent scheduler receives data when obtaining the report of failure, remove corresponding index record in the local data directory relation of preserving.
Preferable, in order to improve the speed that the terminal obtains data, in said method, the positional information that finds out the caching server at desired data place, terminal according to said query requests and the data directory relation of preserving in advance specifically comprises:
Said buffer memory intelligent scheduler finds out one or more caching servers of storage terminal desired data according to the data directory relation of said query requests and preservation in advance;
If when finding out a caching server, with the caching server that finds out as caching server B;
If when finding out a plurality of caching server, from said a plurality of caching servers, select a caching server according to the system of selection that is provided with in advance, and with the caching server of selecting as caching server B.
Concrete, if when finding out a plurality of caching server, from said a plurality of caching servers, select a caching server according to the system of selection that is provided with in advance, and the caching server of selecting is comprised as caching server B:
From a plurality of caching servers that find out, select to be in one or more caching servers of idle condition;
If when selecting a caching server that is in idle condition, with this caching server of selecting as caching server B;
If when selecting a plurality of caching server that is in idle condition, therefrom select a highest caching server of weight as caching server B.
As shown in Figure 4, a kind of caching server of the embodiment of the invention, said caching server comprises:
The first receiving record module 41 is used for the access request of the indicating terminal desired data that receiving terminal sends; And other caching server information that receive the transmission of buffer memory intelligent scheduler; Said other caching server be said intelligent scheduling server after receiving query requests, the corresponding caching server that stores said terminal desired data that finds out;
First sending module 43 is used for when said judge module 42 is confirmed not preserve the terminal desired data, sending said query requests to said buffer memory intelligent scheduler; And said other caching server information that the said first receiving record module 41 is received send to said terminal.
The said first receiving record module 41 also is used for the request that the receiving terminal sent request is obtained data;
Said first sending module 43 also is used for judging locally when preserving the required data in said terminal when said judge module 42, sends said data and give said terminal.
Said first sending module 43 also is used for, and when said judge module 42 is judged this locality and do not stored said terminal desired data, sends data to said buffer memory intelligent scheduler and obtains failure reporting.
As shown in Figure 5, the embodiment of the invention provides a kind of buffer memory intelligent scheduler, and said buffer memory intelligent scheduler comprises:
The second receiving record module 51 is used to receive the query requests that first caching server is sent; Said query requests be said first caching server after the access request that receives the indicating terminal desired data of sending at the terminal, judge and send when self not storing this terminal desired data;
Second sending module 53 is used for searching the second caching server information that module 52 finds and sending to said first caching server said.
The said second receiving record module 51 also is used to receive the data that second caching server sends and obtains failure reporting;
Said buffer memory intelligent scheduler also comprises:
Removing module 54 is used for receiving after data obtain failure reporting corresponding index record in the local data directory relation of preserving of deletion in the said second receiving record module 51.
The said module 52 of searching specifically is used for:
According to the data directory relation of said query requests and preservation in advance, find out one or more caching servers at desired data place, terminal;
If when finding out a caching server, with the caching server that finds out as second caching server;
If when finding out a plurality of caching server, from said a plurality of caching servers, select a caching server according to the system of selection that is provided with in advance, and with the caching server of selecting as second caching server.
As shown in Figure 6, the embodiment of the invention provides a kind of system of access cache server, and said system comprises:
At least two caching servers 61 are used for the access request of the indicating terminal desired data that receiving terminal sends; Judge self whether to preserve this terminal desired data according to said access request, when confirming not preserve, send query requests to the buffer memory intelligent scheduler; And receive said buffer memory intelligent scheduler other caching server 61 information that send, that store said terminal desired data and send to said terminal, said other caching servers 61 are in said at least two caching servers 61;
Said buffer memory intelligent scheduler 62 is used to receive said query requests; Find out said other caching servers 61 of storage terminal desired data according to the data directory relation of said query requests and preservation in advance; Other caching server 61 information that find out are sent to the caching server 61 that sends said query requests.
Said caching server 61 also is used for: local when preserving the required data in said terminal when judging, and send said data and give said terminal.
In sum, beneficial effect:
The method that adopts the embodiment of the invention to provide when caching server confirms self not preserve the required data in terminal, is directly initiated query requests to the buffer memory intelligent scheduler; After the buffer memory intelligent scheduler confirms that which platform caching server is the required data in terminal be kept on; The relevant location information of the caching server of confirming is sent to this terminal; After this terminal receives positional information; Be connected with the pairing caching server of this positional information, and therefrom obtain desired data; It is thus clear that; This method can make when caching server is not preserved a certain data, need from server, not obtain and preserve these data, therefore; Reduce the quantity of the data of the required preservation of caching server greatly, avoided the storage resources of waste caching server.
Simultaneously, because the buffer memory intelligent scheduler can be selected a free time from a plurality of caching servers of selecting and optimum caching server that weight is the highest, this method can reach the caching server effect of load balance.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic inventive concept could of cicada, then can make other change and modification to these embodiment.So accompanying claims is intended to be interpreted as all changes and the modification that comprises preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. the method for an access cache server is characterized in that, said method comprises:
The access request of the indicating terminal desired data that the first caching server receiving terminal is sent judges self whether to preserve this terminal desired data according to said access request, when confirming not preserve, sends query requests to the buffer memory intelligent scheduler;
Said buffer memory intelligent scheduler concerns second caching server that finds out the storage terminal desired data according to the data directory of said query requests and preservation in advance, and the said second caching server information is sent to said first caching server;
The said second caching server information that said first caching server will receive sends to said terminal;
Said terminal is connected to said second caching server and removes to obtain desired data.
2. the method for claim 1 is characterized in that, said terminal is connected to said second caching server and removes to obtain desired data, specifically comprises:
Said terminal is connected to said second caching server, acquisition request data;
When said second caching server is judged this locality and stored said terminal desired data, transmit said data and give said terminal.
3. method as claimed in claim 2 is characterized in that, when said second caching server is judged this locality and do not stored said terminal desired data, sends data to said buffer memory intelligent scheduler and obtains failure reporting;
Corresponding index record in the local data directory relation of preserving of said buffer memory intelligent scheduler deletion.
4. the method for claim 1 is characterized in that, said buffer memory intelligent scheduler concerns that according to the data directory of said query requests and preservation in advance second caching server that finds out the storage terminal desired data specifically comprises:
Said buffer memory intelligent scheduler finds out one or more caching servers of storage terminal desired data according to the data directory relation of said query requests and preservation in advance;
If when finding out a caching server, with the caching server that finds out as second caching server;
If when finding out a plurality of caching server, from said a plurality of caching servers, select a caching server according to the system of selection that is provided with in advance, and with the caching server of selecting as second caching server.
5. method as claimed in claim 4; It is characterized in that; Said if when finding out a plurality of caching server, from said a plurality of caching servers, select a caching server according to the system of selection that is provided with in advance, and the caching server of selecting is comprised as second caching server:
From a plurality of caching servers that find out, select to be in one or more caching servers of idle condition;
If when selecting a caching server that is in idle condition, with this caching server of selecting as second caching server;
If when selecting a plurality of caching server that is in idle condition, therefrom select a highest caching server of weight as second caching server.
6. the method for claim 1 is characterized in that, first caching server is judged according to said access request and sent said data to said terminal when self preserving this terminal desired data.
7. a caching server is characterized in that, said caching server comprises:
The first receiving record module is used for the access request of the indicating terminal desired data that receiving terminal sends; And other caching server information that receive the transmission of buffer memory intelligent scheduler; Said other caching server be said intelligent scheduling server after receiving query requests, the corresponding caching server that stores said terminal desired data that finds out;
Judge module is used for judging self whether to preserve the required data in said terminal according to the said access request that the said first receiving record module receives;
First sending module is used for when said judge module is confirmed not preserve the terminal desired data, sending said query requests to said buffer memory intelligent scheduler; And said other caching server information that the said first receiving record module is received send to said terminal.
8. caching server as claimed in claim 7 is characterized in that, the said first receiving record module also is used for the request that the receiving terminal sent request is obtained data;
Said first sending module also is used for judging locally when preserving the required data in said terminal when said judge module, sends said data and give said terminal.
9. caching server as claimed in claim 7 is characterized in that, said first sending module also is used for, and when said judge module is judged this locality and do not stored said terminal desired data, sends data to said buffer memory intelligent scheduler and obtains failure reporting.
10. a buffer memory intelligent scheduler is characterized in that, said buffer memory intelligent scheduler comprises:
The second receiving record module is used to receive the query requests that first caching server is sent; Said query requests be said first caching server after the access request that receives the indicating terminal desired data of sending at the terminal, judge and send when self not storing this terminal desired data;
Search module, said query requests that is used for receiving according to the second receiving record module and the data directory relation of preserving in advance find out second caching server of the said terminal of storage desired data;
Second sending module, be used for said search module searches to the second caching server information send to said first caching server.
11. buffer memory intelligent scheduler as claimed in claim 9 is characterized in that, the said second receiving record module also is used to receive the data that second caching server sends and obtains failure reporting;
Said buffer memory intelligent scheduler also comprises:
Removing module is used for receiving after data obtain failure reporting corresponding index record in the local data directory relation of preserving of deletion in the said second receiving record module.
12. buffer memory intelligent scheduler as claimed in claim 9 is characterized in that, the said module of searching specifically is used for:
According to the data directory relation of said query requests and preservation in advance, find out one or more caching servers at desired data place, terminal;
If when finding out a caching server, with the caching server that finds out as second caching server;
If when finding out a plurality of caching server, from said a plurality of caching servers, select a caching server according to the system of selection that is provided with in advance, and with the caching server of selecting as second caching server.
13. an access system is characterized in that, said system comprises:
At least two caching servers are used for the access request of the indicating terminal desired data that receiving terminal sends; Judge self whether to preserve this terminal desired data according to said access request, when confirming not preserve, send query requests to the buffer memory intelligent scheduler; And receive said buffer memory intelligent scheduler other caching server information that send, that store said terminal desired data and send to said terminal, said other caching servers are in said at least two caching servers;
Said buffer memory intelligent scheduler is used to receive said query requests; Find out said other caching servers of storage terminal desired data according to the data directory relation of said query requests and preservation in advance; Other caching server information that find out are sent to the caching server that sends said query requests.
14. system as claimed in claim 13 is characterized in that, said caching server also is used for: local when preserving the required data in said terminal when judging, and send said data and give said terminal.
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| CN112055039A (en) * | 2019-06-06 | 2020-12-08 | 阿里巴巴集团控股有限公司 | Data access method, device and system and computing equipment |
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