CN103701929A - Method and device for realizing business data caching - Google Patents

Method and device for realizing business data caching Download PDF

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Publication number
CN103701929A
CN103701929A CN201410001573.6A CN201410001573A CN103701929A CN 103701929 A CN103701929 A CN 103701929A CN 201410001573 A CN201410001573 A CN 201410001573A CN 103701929 A CN103701929 A CN 103701929A
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China
Prior art keywords
business datum
buffer memory
data
updating time
final updating
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CN201410001573.6A
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Inventor
杨正平
王军
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China Security and Fire Technology Co Ltd
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China Security and Fire Technology Co Ltd
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Priority to CN201410001573.6A priority Critical patent/CN103701929A/en
Publication of CN103701929A publication Critical patent/CN103701929A/en
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Abstract

The invention is suitable for the field of communication, and provides a method and a device for realizing business data caching. The method comprises the steps of downloading a data index list from a server by a client-side, wherein the data index list comprises the ID (identity) and the lass updating time of business data; searching business data corresponding to the ID from a cache; when the business data corresponding to the ID do not exist in the cache, or the updating time of the business data corresponding to the ID in the cache is not consistent with the last updating time, downloading the business data from the server. By the adoption of the method and the device provided by the invention, the latest and most accurate data information is guaranteed to be provided to the upper-layer application of the software client-side, the caching efficiency is improved, the locally cached data can be maximally utilized, and the goals of improving the response speed of the client-side and saving the network bandwidth are achieved.

Description

Realize method and the device of business datum buffer memory
Technical field
The invention belongs to the communications field, relate in particular to a kind of method and device of realizing business datum buffer memory.
Background technology
In the Software for Design and R&D process of client-server pattern, often need some data buffer storages in client, so that upper once use these data in, directly from buffer memory, load, to reach objects such as improving response speed, saving network flow.In the software systems of most of client-server patterns, all can relate in caching data on client problem, modal as the web data of web browser buffer memory.Take web browser cache mode as example, general URL of take requested webpage is keyword, to acquire webpage leaves in cache file folder, while opening identical URL next time, browser is first searched buffer memory, some words load the page in buffer memory, if do not had, the page on load server carries out buffer memory simultaneously.
Under this pattern, a URL correspondence static page (or one group of static data), as long as URL is constant, the data that get are always identical, realize simply, efficiency is higher.But along with the complexity of software systems is more and more higher, dynamic data need to be processed and show to software systems, i.e. an identical URL(or one group of identical querying condition), when different time access, corresponding different Query Result.At present, owing to not knowing whether data are upgraded, be all to obtain new data at every turn, cause inefficiency.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of method and device of realizing business datum buffer memory, is intended to solve the problem that existing data buffer storage possibility repeated obtain business datum causes inefficiency.
The embodiment of the present invention is achieved in that a kind of method that realizes business datum buffer memory, and described method comprises:
Client is from server downloading data index list; Described data directory list comprises ID and the final updating time of business datum;
Search the business datum that ID described in buffer memory is corresponding;
In buffer memory, there is not the business datum that described ID is corresponding, or in buffer memory when update time of business datum corresponding to described ID and described final updating Time Inconsistency, from described server, download described business datum.
Further, described method also comprises:
In buffer memory, there is the business datum that described ID is corresponding, and while there is update time of the business datum that described ID is corresponding and described final updating time consistency in buffer memory, in buffer memory, extract described business datum.
Further, described in carrying out, after server downloading service data, also comprise:
The described final updating time will be updated to the update time of the business datum that in buffer memory, described ID is corresponding.
Further, described in carrying out, after server downloading service data, also comprise:
Upper layer application is assembled and be uploaded to described business datum.
Further, described buffer memory is local cache or network side buffer memory.
The present invention also proposes a kind of device of realizing business datum buffer memory, and described device comprises:
Index module, for from server downloading data index list; Described data directory list comprises ID and the final updating time of business datum;
Search module, for searching the business datum that ID described in buffer memory is corresponding;
Cache module, for not having the business datum that described ID is corresponding in the buffer memory, or when the update time of the business datum that in buffer memory, described ID is corresponding and described final updating Time Inconsistency, downloads described business datum from described server.
Further, described device also comprises:
Extraction module for having the business datum that described ID is corresponding in the buffer memory, and while there is update time of the business datum that described ID is corresponding and described final updating time consistency in buffer memory, extracts described business datum in buffer memory.
Further, described device also comprises:
Update module, for being updated to the described final updating time update time of the business datum that in buffer memory, described ID is corresponding.
Further, described device also comprises:
Knockdown block, for assembling and be uploaded to upper layer application by described business datum.
Further, described buffer memory is local cache or network side buffer memory.
The method of the invention and device are at the concrete index data that first extracts while realizing data buffer storage, according to index data, the data of each business unit are judged, whether the update time that judges described business datum is consistent with the final updating time, if inconsistent, from described server, download described up-to-date business datum, if the update time of described business datum and final updating time consistency, directly postpone to leave and carry business datum, thereby guaranteed that the data that client gets are all up-to-date, can save to greatest extent the data volume of Internet Transmission again simultaneously, utilize to greatest extent the data of local cache, reach and improve client end response speed, save the object of the network bandwidth.The in the situation that, picture lower at the network bandwidth or other multi-medium datas being more, there is good practical value.Be particularly useful for the more and more universal situation of current mobile Internet application.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method that realizes business datum buffer memory that provides of the embodiment of the present invention one;
Fig. 2 is the flow chart of the method that realizes business datum buffer memory that provides of the embodiment of the present invention two;
Fig. 3 is the structure chart of the device of realizing business datum buffer memory that provides of the embodiment of the present invention three.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
embodiment mono-
The embodiment of the present invention one proposes a kind of method that realizes business datum buffer memory.As shown in Figure 1, the method for the embodiment of the present invention one comprises step:
S1, client are from the data directory list of server downloading service data; Described data directory list comprises sign and the final updating time of business datum.
The embodiment of the present invention one takes out minimal service data cell, and described minimal service data cell takes out according to service conditions, and different service conditions all may take out different business datums, guarantees that it has atomicity during concrete operations.In the present embodiment, described minimal service data cell need to comprise unique to sign ID, final updating time and other business datum that should minimal service data cell.
In general, business datum leaves in relevant database, and minimal service data cell can show as a record in individual table in database, can be also that in multiple tables, correlation inquiry is processed gained.
Operation rules to minimal service data cell is as follows:
1) while adding a minimal service data cell, need all subitems in this minimal service data cell of disposable interpolation, generate unique ID simultaneously, the final updating time is for adding the time of business datum.
2), while revising minimal service data cell (comprising modification subitem wherein), the final updating time that need to simultaneously upgrade this minimal service data cell is the operating time.
3), by ID, can uniquely get all subitems of minimal service data cell.
4) by ID, can delete this minimal service data cell, comprise all subitems.
The server end of the embodiment of the present invention one provides two class interfaces:
1) inquiry minimal service data cell index interface: return to the minimal service data cell index list satisfying condition, each of list record comprises ID, final updating time two fields.
2) query traffic data unit information interface: take ID as keyword, the concrete data of inquiry minimal service data cell.
The request of user end to server submit Query minimal service data cell index, service end is according to the parameter of submitting to, and search index data list also returns to client.Each in list data comprise ID and the final updating time of a minimal service data cell.
S2, search in buffer memory and identify corresponding business datum, this buffer memory can be local, can be also network side.
In this step, the mode of searching buffer memory is relevant with cache mode, and cache mode comprises two kinds of file cache and database caches.If file cache, take the ID of minimal service data cell as filename storage, while searching, travel through retrieving files; If data buffer storage is designed to major key by the ID of minimal service data cell, while searching, adopt SQL statement retrieval.
S3, in buffer memory, there is not business datum corresponding to sign, or in buffer memory when update time of business datum corresponding to sign and final updating Time Inconsistency, from server, download corresponding business datum of described final updating time.
Particularly, according to the index data getting in S1, take " ID " and " final updating time " be foundation, extract one by one up-to-date business datum, the corresponding minimal service data of each ID, and general upper layer application need to be returned to one group of such data at every turn, therefore need to assemble data.Assembling is the form requiring according to upper layer application, and circulation is combined into a plurality of wall scroll data the process of a complex data, can be simple splicing, also can be by after minimal service Data Analysis, and the call format according to upper layer application, reconfigures; Packet after assembling has contained the needed all data of this business, and data format includes but not limited to json, xml etc.Complete after assembling, return to upper layer application.When extracting up-to-date business datum, be divided into two kinds of situations:
The up-to-date business datum that the ID of take if exist in buffer memory is keyword is directly extracted from buffer memory;
The up-to-date business datum that the ID of take if do not exist in buffer memory is keyword, take this ID as foundation, to server end, extracts up-to-date business datum, the business datum of extracting is carried out to buffer memory simultaneously.
Usually, in judgement buffer memory, exist take up-to-date business datum condition that ID is keyword as: in buffer memory, can find this ID is the business datum that keyword is corresponding, and " final updating time " in the business datum of buffer memory is consistent with " final updating time " that S2 extracts in business datum condition.
Judgement do not exist in buffer memory take up-to-date business datum condition that ID is keyword as: in buffer memory, if can not find this ID is the business datum that keyword is corresponding, or to find this ID be the business datum that keyword is corresponding, but " final updating time " that " final updating time " in the business datum of buffer memory and S2 extract in data qualification is inconsistent.
In the embodiment of the present invention one, at the concrete index data that first extracts while realizing data buffer storage, according to index data, the data of each business unit are judged, whether the update time that judges described business datum is consistent with the final updating time, if inconsistent, from described server, download described up-to-date business datum, if the update time of described business datum and final updating time consistency, directly postpone to leave and carry business datum, thereby guaranteed that the data that client gets are all up-to-date, can save to greatest extent the data volume of Internet Transmission again simultaneously, utilize to greatest extent the data of local cache, reach and improve client end response speed, save the object of the network bandwidth.The in the situation that, picture lower at the network bandwidth or other multi-medium datas being more, there is good practical value.Be particularly useful for the more and more universal situation of current mobile Internet application.
Embodiment bis-:
With in video operation system, in mobile video client, the list of display video point is example, describes in detail below.
Business scenario: in video operation, cellphone subscriber can inquire about all video point lists, and management staff can increase, delete video point newly, or revises the information of video point, and video dot information upgrades at any time.For improving search efficiency, each inquiry is only returned to N(N and can be arranged) bar video dot information, by the mode of lower one page, obtains more video dot information.Video dot information comprises IP, port, user name, password of title, position, picture, connection video equipment etc., therefore, can in database, set up the data directory of a Video, as follows:
Minimum video dot information data cell of each record description, wherein ID can uniquely determine a data point information, the final updating time that LastTime is data, all the other are business datum.
At server end, provide two interfaces:
(1) obtain video point list index list interface: GetVideoList (Index, Count), obtain the Count bar data that Index rises.Wherein Index represents the original position of fetching data, this quantity of fetching data of Count.Return to two fields of ID, LastTime of Video table.
(2) obtain video dot information interface: GetVideoInfo(ID), obtain and take the video dot information that ID is keyword,
Return to a complete documentation of Video table.
The local cache of supposing client adopts text mode to store, and video dot information is buffered in Video subdirectory, and the ID of usining orders as file, and video dot information is deposited hereof; Data communication adopts HTTP mode; And suppose that current Video catalogue is for empty, without any the file of buffer memory.
In the embodiment of the present invention two, suppose that client upper layer application is only required first and show 2 up-to-date video dot informations, i.e. 2 minimal service data cells.
Following steps S21-S28 has described in without any data cached situation, the caching mechanism course of work during list of videoconference client display video point.In this example, first show the data directory list of two video points, in list, packets of information has contained the contents such as ID, title, address, final updating time.
S21, client upper layer application are imported parameter 0(Index into), 2(Count), require 2 video dot informations.
S22, client are set up HTTP link, send request, and submit Index=0 to, two parameters of Count=2, the data directory list that requires to download 2 video dot informations to server.
S23, service end receive after request, call GetVideoList(Index, Count) the data directory list of interface inquiry video information, and return to client, Index=0 wherein, Count=2.
The data format returning can be as follows:
S24, client are to data directory list, and by resolving this JSON data format, get the record of ID=00001, LastTime=2013-11-2010:20:41 and ID=00002, two video dot informations of LastTime=" 2013-11-1910:15:51 ".
S25, the up-to-date video dot information of client query.
Particularly, first import ID=00001, LastTime=2013-11-2010:20:41 into, in the Video of buffer memory catalogue, search 00001.data file by name, the business datum that inquires this ID does not exist, and execution step S26 obtains the video dot information of ID=00001 to server.
S26, client are set up HTTP link, send request, and submit ID=00001 parameter to server.Server is received request, calls GetVideoInfo(ID) interface, inquire business datum, return to client.
The data format returning is as follows:
S27, client generate the data that get 00001.data file in Video catalogue, and will return to business datum and write in cache file.
Repeat tri-steps of S25-S27, the video dot information that completes ID=00002 extracts, and produces 00002.data file in Video catalogue.
S28, business datum assembling, the data that assembling is completed return to upper level applications.
Data format after assembling can be as follows:
Return to step S21, in client buffer memory under 00001.data, two data cases of 00002.data, upper layer application require to show 3 up-to-date video dot informations.
When repeating step S21 to S28, when client is extracted the data of ID=00001, ID=00002 again, can find two files of 00001.data and 00002.data, and the LastTime in two files is all consistent with the LastTime in index, therefore can directly from cache file, extract data.And when client is extracted the video point of ID=00003, because this locality does not have buffer memory, therefore need to arrive server end to extract, its process and above-mentioned S25-S27 step are in full accord.
When the embodiment of the present invention two further illustrates and carries out data buffer storage in video operation system, first adopt index data is searched, when update time of the video dot information that video dot information does not exist or a certain ID is corresponding that a certain ID is corresponding in index data is inconsistent, just from server, download up-to-date video dot information, greatly save broadband cost, improved buffer efficiency.
embodiment tri-
The embodiment of the present invention three proposes a kind of device of realizing business datum buffer memory.As shown in Figure 2, the device of the embodiment of the present invention three comprises:
Index module 10, for from server downloading data index list;
Particularly, index module 10 is initiatively set up data interface channel with server end, data channel is generally TCP, HTTP type, send the request of downloading data index, server end is received after request, return to index list to data directory module 10, data directory form can be as shown in the embodiment of the present invention two.Especially, in data directory request, can comprise the contents such as data area, ordering rule, screening conditions.
Search module 20, for searching the business datum that buffer memory ID is corresponding;
Particularly, if buffer memory is realized with file mode, according to ID documents name, carry out document retrieval; If buffer memory is realized with database mode, the ID of take carries out database retrieval as keyword.
Cache module 30, for not having the business datum that ID is corresponding in the buffer memory, or when the update time of the business datum that in buffer memory, ID is corresponding and final updating Time Inconsistency, from server downloading service data; In buffer memory, can find this ID is the business datum that keyword is corresponding, and " the final updating time " in the business datum of buffer memory is consistent with " final updating time " that S2 extracts in business datum condition, without directly extract the business datum that this ID is corresponding from buffer memory.
Mention module 40, for having the business datum that described ID is corresponding in the buffer memory, and while there is update time of the business datum that described ID is corresponding and described final updating time consistency in buffer memory, in buffer memory, extract described business datum.
Knockdown block 50, for assembling business datum be uploaded to upper layer application.
Particularly, the form that Knockdown block 50 requires according to upper layer application, circulation is combined into a plurality of wall scroll data the process of a complex data, it can be simple splicing, also can be by after minimal service Data Analysis, the call format according to upper layer application, reconfigures; Packet after assembling has contained the needed all data of this business, and data format includes but not limited to json, xml etc.
The embodiment of the present invention three takes out minimal service data cell, and described minimal service data cell takes out according to service conditions, and different service conditions all may take out different business datums, guarantees that it has atomicity during concrete operations.In the present embodiment, described minimal service data cell need to comprise unique to sign ID, final updating time and other business datum that should minimal service data cell.
In general, business datum leaves in relevant database, and minimal service data cell can show as a record in individual table in database, can be also that in multiple tables, correlation inquiry is processed gained.
Operation rules to minimal service data cell is as follows:
1) while adding a minimal service data cell, need all subitems in this minimal service data cell of disposable interpolation, generate unique ID simultaneously, the final updating time is for adding the time of business datum.
2), while revising minimal service data cell (comprising modification subitem wherein), the final updating time that need to simultaneously upgrade this minimal service data cell is the operating time.
3), by ID, can uniquely get all subitems of minimal service data cell.
4) by ID, can delete this minimal service data cell, comprise all subitems.
The server end of the embodiment of the present invention three provides two class interfaces:
1) inquiry minimal service data cell index interface: return to the minimal service data cell index list satisfying condition, each of list record comprises ID, final updating time two fields.
2) query traffic data unit information interface: take ID as keyword, the concrete data of inquiry minimal service data cell.
Index module 10 is to the request of server submit Query minimal service data cell index, and service end is according to the parameter of submitting to, and search index data list also returns to client.Each in list data comprise ID and the final updating time of a minimal service data cell.
Search module 20 and search in buffer memory and identify corresponding business datum, this buffer memory can be local, can be also network side.In buffer memory, do not have business datum corresponding to sign, or in buffer memory when update time of business datum corresponding to sign and final updating Time Inconsistency, cache module 30 is downloaded described business datum from server.Searching module 20, to search the mode of buffer memory relevant with cache mode, and cache mode comprises two kinds of file cache and database caches.If file cache, take the ID of minimal service data cell as filename storage, while searching, travel through retrieving files; If data buffer storage is designed to major key by the ID of minimal service data cell, while searching, adopt SQL statement retrieval.
Cache module 30 is according to the index data getting, take " ID " and " final updating time " be foundation, extract one by one up-to-date business datum, then completed after assembling by Knockdown block 50, return to upper layer application.When cache module 30 extracts up-to-date business datum, be divided into two kinds of situations:
The up-to-date business datum that the ID of take if exist in buffer memory is keyword, cache module 30 directly extracts from buffer memory;
The up-to-date business datum that the ID of take if do not exist in buffer memory is keyword, cache module 30 be take this ID as foundation, to server end, extracts up-to-date business datum, the data of getting is carried out to buffer memory simultaneously.
Usually, in cache module 30 judgement buffer memorys, exist take up-to-date business datum condition that ID is keyword as: in buffer memory, can find this ID is the business datum that keyword is corresponding, and " final updating time " in the business datum of buffer memory is consistent with " the final updating time " of extracting in business datum condition.
Judgement do not exist in buffer memory take up-to-date business datum condition that ID is keyword as: in buffer memory, if can not find this ID is the business datum that keyword is corresponding, or to find this ID be the business datum that keyword is corresponding, but " final updating time " in the business datum of buffer memory and " the final updating time " of extracting in data qualification is inconsistent.
The embodiment of the present invention also can comprise a update module 60, and be updated to the described final updating time update time of the business datum that in buffer memory, described ID is corresponding, to use while needing buffer memory next time.
First the device of the embodiment of the present invention three extracts index datas by index module 10 concrete while realizing data buffer storage, cache module 30 judges the data of each business unit according to index data, whether the update time that judges described business datum is consistent with the final updating time, if inconsistent, from described server, download described up-to-date business datum, if the update time of described business datum and final updating time consistency, directly postpone to leave and carry business datum, thereby guaranteed that the data that client gets are all up-to-date, can save to greatest extent the data volume of Internet Transmission again simultaneously, utilize to greatest extent the data of local cache, reach and improve client end response speed, save the object of the network bandwidth.The in the situation that, picture lower at the network bandwidth or other multi-medium datas being more, there is good practical value.Be particularly useful for the more and more universal situation of current mobile Internet application.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1. a method that realizes business datum buffer memory, is characterized in that, described method comprises:
Client is from server downloading data index list; Described data directory list comprises ID and the final updating time of business datum;
Search the business datum that ID described in buffer memory is corresponding;
In buffer memory, there is not the business datum that described ID is corresponding, or in buffer memory when update time of business datum corresponding to described ID and described final updating Time Inconsistency, from described server, download described business datum.
2. the method for claim 1, is characterized in that, described method also comprises:
In buffer memory, there is the business datum that described ID is corresponding, and while there is update time of the business datum that described ID is corresponding and described final updating time consistency in buffer memory, in buffer memory, extract described business datum.
3. the method for claim 1, is characterized in that, described in carrying out, after server downloading service data, also comprises:
The described final updating time will be updated to the update time of the business datum that in buffer memory, described ID is corresponding.
4. method as claimed any one in claims 1 to 3, is characterized in that, is carrying out describedly after server downloading service data, also comprises:
Upper layer application is assembled and be uploaded to described business datum.
5. method as claimed any one in claims 1 to 3, is characterized in that, described buffer memory is local cache or network side buffer memory.
6. a device of realizing business datum buffer memory, is characterized in that, described device comprises:
Index module, for from server downloading data index list; Described data directory list comprises ID and the final updating time of business datum;
Search module, for searching the business datum that ID described in buffer memory is corresponding;
Cache module, for not having the business datum that described ID is corresponding in the buffer memory, or when the update time of the business datum that in buffer memory, described ID is corresponding and described final updating Time Inconsistency, downloads described business datum from described server.
7. device as claimed in claim 6, is characterized in that, described device also comprises:
Extraction module for having the business datum that described ID is corresponding in the buffer memory, and while there is update time of the business datum that described ID is corresponding and described final updating time consistency in buffer memory, extracts described business datum in buffer memory.
8. device as claimed in claim 6, is characterized in that, described device also comprises:
Update module, for being updated to the described final updating time update time of the business datum that in buffer memory, described ID is corresponding.
9. the device as described in any one in claim 6 to 9, is characterized in that, described device also comprises:
Knockdown block, for assembling and be uploaded to upper layer application by described business datum.
10. the device as described in any one in claim 6 to 9, is characterized in that, described buffer memory is local cache or network side buffer memory.
CN201410001573.6A 2014-01-02 2014-01-02 Method and device for realizing business data caching Pending CN103701929A (en)

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