CN101447874B - Data synchronization method, client and server - Google Patents
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- CN101447874B CN101447874B CN2008102410490A CN200810241049A CN101447874B CN 101447874 B CN101447874 B CN 101447874B CN 2008102410490 A CN2008102410490 A CN 2008102410490A CN 200810241049 A CN200810241049 A CN 200810241049A CN 101447874 B CN101447874 B CN 101447874B
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Abstract
The invention provides a data synchronization method, a client and a server. The data synchronization method comprises the following steps: receiving server data alteration information transmitted by a server; comparing the server data alteration information with client data alteration information to acquire the same data item identifier; transmitting the client data and fingerprint corresponding to the same data item identifier to the server for altering the synchronous data corresponding to the server; or receiving the server data content corresponding to the same data item identifier for altering the synchronous data corresponding to the client. The method can solve the problem of blindly transmitting and comparing the fingerprints, thereby reducing interaction and saving wireless resources.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method of data synchronization, client and server.
Background technology
Data synchronization technology is widely used, utilize data synchronization technology, the user can carry out the reception and the transmission of information whenever and wherever possible, application program with a handheld device actuating equipment, the result of data interaction and executive utility is stored in the handheld device, and such data consistent in maintenance and other data equipments.
In the prior art, used a kind of method that is called fingerprint (Fingerprint) in data sync (the Data Synchronization DS) technology, fingerprint is the numerical value that one group of data is obtained after by certain algorithm process.Any variation of data all can cause the difference of fingerprint, so the effective identification data of fingerprint.The purposes of fingerprint is to be used for server (Server) whether differentiate data that it receives from client (Client) identical with the data of self storage.If the fingerprint unanimity shows that server is the same with the data of client, terminal does not need to send, if fingerprint is different, shows that data have modification, at this moment will see the collision detection strategy, if be as the criterion with data in server, that terminal also there is no need to send data.Like this, can avoid sending some unnecessary data by comparing fingerprint, thereby save flow.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: fingerprint has multiple algorithm, and communicating pair uses consistent algorithm, can carry out negotiating algorithm or assignment algorithm.But, sometimes there is the conflicting data item in the change daily record (Changelog), at this moment just needing client to send fingerprint compares, but for the single-ended generation fingerprint of client, the situation that server is preserved, at this moment the data item among the Changelog of server does not have fingerprint, and it is useless therefore sending fingerprint.Interruption has taken place when synchronous if both sides carry out positive constant increment, again after initiating synchronously, client need send to server to the fingerprint of the data item among the own changelog, at this moment existing some corresponding data item of server does not have the problem of fingerprint yet, for these data item, client does not need to send fingerprint yet.More than once mutual between client and the server, wasted interface-free resources.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of data synchronization, client and server, in order to solve the problem that fingerprint is compared that blindly sends, reduces the mutual of server and client, save radio resources.
For achieving the above object, the embodiment of the invention provides a kind of method of data synchronization, and this method comprises: the server data modification information that reception server is sent; Client data modification information and described server data modification information are compared, obtain identical data item identifier; Send described identical data item identifier clients corresponding data content and fingerprint to server, be used for the corresponding synchrodata of described server change server, described fingerprint is the numerical value that one group of data is obtained after by algorithm process; Or, receive described identical data item identifier corresponding server data content, the synchrodata of client correspondence is changed.
For achieving the above object, the embodiment of the invention also provides a kind of method of data synchronization, this method comprises: to client send server data change information, be used for client and carry out the client data modification information with the comparison of described server data modification information and obtain identical data item identifier; Receive described identical data item identifier clients corresponding data content and fingerprint, synchrodata corresponding in the server is changed, described fingerprint is the numerical value that one group of data is obtained after by algorithm process; Or described identical data item identifier corresponding server data content sent to client, be used for the corresponding synchrodata of described client change.
For achieving the above object, the embodiment of the invention also provides a kind of data sync client end, and this client comprises: the modification information receiving element is used for the server data modification information that reception server is sent; The modification information comparing unit is used for client data modification information and described server data modification information are compared, and obtains identical data item identifier; The modification information processing unit, send described identical data item identifier clients corresponding data content and fingerprint to server, be used for the corresponding synchrodata of described server change server, described fingerprint is the numerical value that one group of data is obtained after by algorithm process; Or, receive described identical data item identifier corresponding server data content, the synchrodata of client correspondence is changed.
For achieving the above object, the embodiment of the invention also provides a kind of data synchronization server, this server comprises: transmitting element, be used for to client send server data change information, described server data modification information is used for client and carries out the client data modification information with the comparison of described server data modification information and obtain identical data item identifier; Processing unit is used to receive described identical data item identifier clients corresponding data content and fingerprint, and synchrodata corresponding in the server is changed, and described fingerprint is the numerical value that one group of data is obtained after by algorithm process; Or described identical data item identifier corresponding server data content sent to client, be used for the corresponding synchrodata of described client change.
Technique scheme has following advantage or beneficial effect:
The invention provides device, method and system that a kind of data sync fingerprint sends, solved and blindly sent the problem that fingerprint is compared, thereby reduced the mutual of both sides, saved Radio Resource.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the method for data synchronization flow chart of the embodiment of the invention one.
Fig. 2 is the method flow diagram of the embodiment of the invention two.
Fig. 3 is the structural representation of the data sync client end of the embodiment of the invention three.
Fig. 4 is the structural representation of the data synchronization server of the embodiment of the invention four.
Fig. 5 is the mapping relations figure of embodiment of the invention client and data in server item.
Fig. 6 is the change data list among the Changelog of embodiment of the invention server.
Fig. 7 is the change data list among the Changelog of embodiment of the invention client.
Fig. 8 is that the embodiment of the invention is the change data list among the Changelog of the server after the punctual change with the client.
Fig. 9 is that the embodiment of the invention is the change data list among the Changelog of the server after the punctual change with the server.
Figure 10 is the flow chart of embodiment of the invention data synchronization process.
Embodiment
Below in conjunction with embodiment of the invention accompanying drawing, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one
Fig. 1 is the method for data synchronization flow chart of the embodiment of the invention one.As shown in Figure 1, this method comprises:
Step S101: the server data modification information that reception server is sent;
Step S102: client data modification information and described server data modification information are compared, obtain identical data item identifier;
Step S103: send described identical data item identifier clients corresponding data content and fingerprint to server, be used for the corresponding synchrodata of described server change server; Or, receive described identical data item identifier corresponding server data content, the synchrodata of client correspondence is changed.If synchrodata change standard is described client data modification information, then described identical data item identifier clients corresponding data content and fingerprint are sent to server end, be used for changing the corresponding synchrodata of server; If synchrodata change standard is described server data modification information, then the synchrodata of client correspondence is changed according to identical data item identifier corresponding server data content.
In a preferred embodiment, described client data modification information and server data change information can comprise data item identifier and/or synchrodata modification information, and described client data modification information and server data change information also can comprise data item identifier and/or synchrodata deletion information.
Need between existing station terminal equipment and the server to initiate synchronously, the mapping relations of their data item as shown in Figure 5, wherein LUID is unique ID of certain bar data correspondence in the client, GUID is unique ID of certain bar data correspondence in the server.Fig. 6 is the data change information of the Changelog of server, and data change information also can be placed on the Changelog outside of server.Fig. 7 is the data change information of the Changelog of client, and data change information also can be placed on the Changelog outside of client.
According to Fig. 6 as can be known, have 4 data item ABCD1012, ABCD1013, ABCD 1015 and ABCD 1016 to change among the Changelog of server, wherein, ABCD1012 and ABCD 1015 revise, and ABCD1013 and ABCD 1016 are deleted.
In the synchronizing process next time, in PKG2, server will use＜ModifyID〉inform the data item ID that change (deletion, revise) has taken place on recipient's server.According to Fig. 6 as can be known, server has 4 data item to change, and detailed process is as follows:
If be as the criterion with client, client is received after the PKG2, through resolving, find that server has four data item that variation has taken place, according to Fig. 7,1012,1015 and 1016 also are present among the Changelog of client, according to the conflict strategy, be as the criterion with client, client will be in PKG3 directly sends 1012,1015 and 1016 data and up-to-date fingerprint so, and detailed process is as follows:
After server is received PKG3, directly give ABCD1012, ABCD1015 and ABCD1016 data item content and new fingerprint.Meanwhile, the Changelog of server as shown in Figure 8.
The beneficial effect of the embodiment of the invention: solved and blindly sent the problem that fingerprint is compared, thereby reduced the mutual of both sides, saved Radio Resource.
Embodiment two
Fig. 2 is the method flow diagram of the embodiment of the invention two.As shown in Figure 2, this method comprises:
Step S201:, be used for client and carry out the comparison of data change information and obtain identical data item identifier to client send server data change information;
Step S202: receive described identical data item identifier clients corresponding data content and fingerprint, synchrodata corresponding in the server is changed; Or described identical data item identifier corresponding server data content sent to client, be used for the corresponding synchrodata of described client change.If synchrodata change standard is described client data modification information, then receive described identical data item identifier clients corresponding data content and fingerprint, synchrodata corresponding in the server is changed; If synchrodata change standard is described server data modification information, then send described identical data item identifier corresponding server data content to client, be used for the corresponding synchrodata of described client change.
In a preferred embodiment, described client data modification information and server data change information for example can comprise data item identifier and/or synchrodata modification information; Described client data modification information and server data change information can also comprise: data item identifier and/or synchrodata deletion information.
Need between existing station terminal equipment and the server to initiate synchronously, the mapping relations of their data item as shown in Figure 5, wherein LUID is unique ID of certain bar data correspondence in the client, GUID is unique ID of certain bar data correspondence in the server.Fig. 6 is the data change information of the Changelog of server, and data change information also can be placed on the Changelog outside of server.Fig. 7 is the data change information of the Changelog of client, and data change information also can be placed on the Changelog outside of client.
According to Fig. 6 as can be known, have 4 data item ABCD1012, ABCD1013, ABCD 1015 and ABCD 1016 to change among the Changelog of server, wherein, ABCD1012 and ABCD 1015 revise, and ABCD1013 and ABCD 1016 are deleted.
In the synchronizing process next time, in PKG2, server will use＜ModifyID〉inform the data item ID that change (deletion, modification) taken place on recipient's server, and provide the concrete mode of change.Detailed process is as follows:
If be as the criterion with server, though 1012,1015 and 1016 are present among the Changelog of client, but client does not need to send 1012,1015 and 1016 content and 1012, the fingerprint of 1015 and 1016 correspondences, after server sent to client with the comparison result data, the data that send to server were as follows:
After server was received above-mentioned data, directly with the clauses and subclauses deletion of 1016 data item of server, at this moment, server Changelog as shown in Figure 9.
The beneficial effect of the embodiment of the invention: solved and blindly sent the problem that fingerprint is compared, thereby reduced the mutual of both sides, saved Radio Resource.
Embodiment three
Fig. 3 is the structural representation of the data sync client end of the embodiment of the invention three.As shown in Figure 3, this client comprises: modification information receiving element 301 is used for the server data modification information that reception server is sent; Modification information comparing unit 302 is used for client data modification information and described server data modification information are compared, and obtains identical data item identifier; Modification information processing unit 303 sends described identical data item identifier clients corresponding data content and fingerprint to server, is used for the corresponding synchrodata of described server change server; Or, receive described identical data item identifier corresponding server data content, the synchrodata of client correspondence is changed.
In a preferred embodiment, described modification information processing unit comprises: the standard judgment sub-unit is used to judge that synchrodata change standard is described server data modification information, still described client data modification information; If described client data modification information then triggers first and handles subelement, if described server data modification information then triggers second and handles subelement; First handles subelement, is used for the triggering according to described standard judgment sub-unit, sends described identical data item identifier clients corresponding data content and fingerprint to server, is used for the corresponding synchrodata of described server change server; Second handles subelement, is used for the triggering according to described standard judgment sub-unit, receives described identical data item identifier corresponding server data content, and the synchrodata of client correspondence is changed.
The beneficial effect of the embodiment of the invention: solved and blindly sent the problem that fingerprint is compared, thereby reduced the mutual of both sides, saved Radio Resource.
Embodiment four
Fig. 4 is the structural representation of the data synchronization server of the embodiment of the invention four.As shown in Figure 4, this server comprises: transmitting element 401, be used for to client send server data change information, and described server data modification information is used for client to carry out the comparison of data change information and obtains identical data item identifier; Processing unit 402 is used to receive described identical data item identifier clients corresponding data content and fingerprint, and synchrodata corresponding in the server is changed; Or described identical data item identifier corresponding server data content sent to client, be used for the corresponding synchrodata of described client change.
In a preferred embodiment, described processing unit comprises: judgment sub-unit is used to judge that synchrodata change standard is described server data modification information, still described client data modification information; If described client data modification information then triggers the 3rd and handles subelement, if described server data modification information then triggers the and manages subelement everywhere; The 3rd handles subelement, is used for the triggering according to described judgment sub-unit, receives described identical data item identifier clients corresponding data content and fingerprint, and synchrodata corresponding in the server is changed; The manages subelement everywhere, is used for the triggering according to described judgment sub-unit, sends described identical data item identifier corresponding server data content to client, and described server data content is used for the corresponding synchrodata of described client change.
The beneficial effect of the embodiment of the invention: solved and blindly sent the problem that fingerprint is compared, thereby reduced the mutual of both sides, saved Radio Resource.
Figure 10 is the flow chart of embodiment of the invention data synchronization process.User end to server sends synchronous initiation data PKG1, comprises fingerprint occupation mode negotiation information among the PKG1 or specifies fingerprint occupation mode information.Server sends data PKG2 to client, comprises the server data modification information among the server Changelog among the PKG2.After client is received data PKG2, the client data modification information among the Changelog of server data modification information among the PKG2 and client is compared.If when the client data modification information is synchrodata change standard, then described identical data item identifier clients corresponding data content and fingerprint are sent to server end, are used for changing the corresponding synchrodata of server; If when described server data modification information is synchrodata change standard, then the synchrodata of client correspondence is changed according to the server data content of same data item.
User end to server sends PKG3, comprises data change information among the PKG3, the content and the fingerprint of the data item in the change change daily record.Server sends PKG4 to client, comprises the sign of the data element that server indication client need send among the PKG4.User end to server sends PKG5, comprises among the PKG5 that client sends indicated data element.Server sends PKG6 to client, comprises among the PKG6 that server returns receiving status information, the data that all right send server end is revised.User end to server sends PKG7, comprises among the PKG7 that client returns state and the mapping directive that receives data.Server sends PKG8 to client, comprises among the PKG8 that server returns the state information to mapping directive.Same EOS, client sends to the user with synchronized result.
The beneficial effect of the embodiment of the invention: solved and blindly sent the problem that fingerprint is compared, thereby reduced the mutual of both sides, saved Radio Resource.
Claims (12)
1. a method of data synchronization is characterized in that, described method comprises:
The server data modification information that reception server is sent;
Client data modification information and described server data modification information are compared, obtain identical data item identifier;
Send described identical data item identifier clients corresponding data content and fingerprint to server, be used for the corresponding synchrodata of described server change server, described fingerprint is the numerical value that one group of data is obtained after by algorithm process; Or, receive described identical data item identifier corresponding server data content, the synchrodata of client correspondence is changed.
2. the method for claim 1, it is characterized in that, if synchrodata change standard is described client data modification information, then described identical data item identifier clients corresponding data content and fingerprint are sent to server end, be used for changing the corresponding synchrodata of server;
If synchrodata change standard is described server data modification information, then the synchrodata of client correspondence is changed according to identical data item identifier corresponding server data content.
3. the method for claim 1 is characterized in that, described client data modification information and server data change information comprise: data item identifier and/or synchrodata are revised information.
4. the method for claim 1 is characterized in that, described client data modification information and server data change information comprise: data item identifier and/or synchrodata deletion information.
5. a method of data synchronization is characterized in that, described method comprises:
To client send server data change information, be used for client and carry out the client data modification information with the comparison of described server data modification information and obtain identical data item identifier;
Receive described identical data item identifier clients corresponding data content and fingerprint, synchrodata corresponding in the server is changed, described fingerprint is the numerical value that one group of data is obtained after by algorithm process; Or described identical data item identifier corresponding server data content sent to client, be used for the corresponding synchrodata of described client change.
6. method as claimed in claim 5, it is characterized in that, if synchrodata change standard is described client data modification information, then receive described identical data item identifier clients corresponding data content and fingerprint, synchrodata corresponding in the server is changed;
If synchrodata change standard is described server data modification information, then send described identical data item identifier corresponding server data content to client, be used for the corresponding synchrodata of described client change.
7. method as claimed in claim 5 is characterized in that, described client data modification information and server data change information comprise: data item identifier and/or synchrodata are revised information.
8. method as claimed in claim 5 is characterized in that, described client data modification information and server data change information comprise: data item identifier and/or synchrodata deletion information.
9. a data sync client end is characterized in that, described client comprises:
The modification information receiving element is used for the server data modification information that reception server is sent;
The modification information comparing unit is used for client data modification information and described server data modification information are compared, and obtains identical data item identifier;
The modification information processing unit, send described identical data item identifier clients corresponding data content and fingerprint to server, be used for the corresponding synchrodata of described server change server, described fingerprint is the numerical value that one group of data is obtained after by algorithm process; Or, receive described identical data item identifier corresponding server data content, the synchrodata of client correspondence is changed.
10. client as claimed in claim 9 is characterized in that, described modification information processing unit comprises:
The standard judgment sub-unit is used to judge that synchrodata change standard is described server data modification information, still described client data modification information; If described client data modification information then triggers first and handles subelement, if described server data modification information then triggers second and handles subelement;
First handles subelement, is used for the triggering according to described standard judgment sub-unit, sends described identical data item identifier clients corresponding data content and fingerprint to server, is used for the corresponding synchrodata of described server change server;
Second handles subelement, is used for the triggering according to described standard judgment sub-unit, receives described identical data item identifier corresponding server data content, and the synchrodata of client correspondence is changed.
11. a data synchronization server is characterized in that, described server comprises:
Transmitting element is used for to client send server data change information, and described server data modification information is used for client and carries out the client data modification information with the comparison of described server data modification information and obtain identical data item identifier;
Processing unit is used to receive described identical data item identifier clients corresponding data content and fingerprint, and synchrodata corresponding in the server is changed, and described fingerprint is the numerical value that one group of data is obtained after by algorithm process; Or described identical data item identifier corresponding server data content sent to client, be used for the corresponding synchrodata of described client change.
12. data synchronization server as claimed in claim 11 is characterized in that, described processing unit comprises:
Judgment sub-unit is used to judge that synchrodata change standard is described server data modification information, still described client data modification information; If described client data modification information then triggers the 3rd and handles subelement, if described server data modification information then triggers the and manages subelement everywhere;
The 3rd handles subelement, is used for the triggering according to described judgment sub-unit, receives described identical data item identifier clients corresponding data content and fingerprint, and synchrodata corresponding in the server is changed;
The manages subelement everywhere, is used for the triggering according to described judgment sub-unit, sends described identical data item identifier corresponding server data content to client, and described server data content is used for the corresponding synchrodata of described client change.
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| CN102750283A (en) * | 2011-04-20 | 2012-10-24 | 阿里巴巴集团控股有限公司 | Massive data synchronization system and method |
| CN103428264B (en) * | 2013-06-27 | 2016-12-28 | 华为软件技术有限公司 | The method of data syn-chronization, equipment and system |
| CN105100158A (en) * | 2014-05-15 | 2015-11-25 | 中兴通讯股份有限公司 | Message pushing and obtaining methods and apparatuses |
| CN106101091B (en) * | 2016-06-07 | 2020-06-23 | 腾讯科技（深圳）有限公司 | Method and device for processing data between terminals |
| CN106528247B (en) * | 2016-11-30 | 2020-01-07 | 北京小米移动软件有限公司 | Data refreshing method and device |
| CN108874884B (en) * | 2018-05-04 | 2021-05-04 | 广州多益网络股份有限公司 | Data synchronization updating method, device and system and server equipment |
| CN109104501B (en) * | 2018-09-30 | 2023-02-17 | 北京奇虎科技有限公司 | Data synchronization method, device and system |
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| CN1852137A (en) * | 2005-07-20 | 2006-10-25 | 华为技术有限公司 | Method for realizing synchronization of client end data and server end data |
| CN101009516A (en) * | 2006-01-26 | 2007-08-01 | 华为技术有限公司 | A method and system for data synchronization |
| CN101316256A (en) * | 2007-05-28 | 2008-12-03 | 微码（北京）移动技术有限公司 | Data updating method |
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| CN1852137A (en) * | 2005-07-20 | 2006-10-25 | 华为技术有限公司 | Method for realizing synchronization of client end data and server end data |
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