CN101656652A - Content synchronization method, equipment and system for dynamic content delivery - Google Patents
Content synchronization method, equipment and system for dynamic content delivery Download PDFInfo
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- CN101656652A CN101656652A CN200810118664A CN200810118664A CN101656652A CN 101656652 A CN101656652 A CN 101656652A CN 200810118664 A CN200810118664 A CN 200810118664A CN 200810118664 A CN200810118664 A CN 200810118664A CN 101656652 A CN101656652 A CN 101656652A
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Abstract
The invention discloses a content synchronization method for dynamic content delivery DCD, which comprises that: a DCD server receives a content synchronization request of a DCD terminal, and returnsa first synchronous anchor list comprising a synchronous anchor which is used for identifying the attribute information of current content; the DCD terminal compares the synchronous anchor in the first synchronous anchor list and the synchronous anchor in a second synchronous anchor list for identifying the attribute information of the existing local content, and when the synchronous anchors in the first and second synchronous anchor lists are inconsistent, the DCD terminal makes a request to the DCD server to download the content corresponding to the synchronous anchor in the first synchronous anchor list inconsistent with the synchronous anchor in the second synchronous anchor list; and the DCD terminal receives the content provided by the DCDD server according to the content download request. The invention simultaneously discloses a DCD server, a DCD terminal and a DCD system. The content synchronization method for the dynamic content delivery DCD can reduce the occupation of network bandwidth and relieve the synchronization processing pressure of the DCD terminal and the DCD server.
Description
Technical field
The present invention relates to communication technical field, relate in particular to content synchronization method, equipment and the system of dynamic content dispensing.
Background technology
Dynamic content dispensing (Dynamic Content Delivery, DCD) be a kind of based on C/S (Client/Server, client/server) structure, after obtaining content in the predefined time from content source by network side server, push the technology of content to portable terminal by specific trigger mechanism.
The content that pushes to portable terminal can be that the user is customized according to individual preference, also can be user's un-customized but unified customized by the DCD server, as public content.
Which kind of customization situation no matter, when the time of setting in advance arrives, or when initiatively triggering by the user, or when initiatively triggering by the DCD server, the DCD server all can be with this content synchronization of obtaining from content source to the DCD terminal, the user just can be on the DCD terminal browsing content.
Content synchronization is set according to the character of content in advance by the DCD server update time, as the weak point that will be provided with update time than the content synchronization of competitive sports usually content synchronization update time of weather forecast.
Need synchronous content after content source is obtained, to be handed down to the user through encapsulation by the DCD server.The inventor by analysis, find in the prior art, the DCD terminal since can't judge this with the content of DCD server sync whether with the existing content repetition of DCD terminal, thereby to DCD server requests full content synchronously, synchronous like this content probably be on the DCD terminal buffer memory, the content that need not upgrade, therefore not only serious waste network bandwidth resources, also increased the synchronization processing pressure of DCD terminal and DCD server.
Summary of the invention
The embodiment of the invention provides the content synchronization method of a kind of dynamic content dispensing DCD, takies in order to reduce the network bandwidth, alleviates the synchronization processing pressure of DCD terminal and DCD server, and this method comprises:
After the DCD server received the content synchronization request of DCD terminal, first synchronous anchor list that will comprise the synchronous anchor that is used to identify current contents attribute information was sent to the DCD terminal;
The DCD terminal compares the synchronous anchor of the synchronous anchor in first synchronous anchor list with second synchronous anchor list that is used for identifying local existing contents attribute information;
When the synchronous anchor in the synchronous anchor in first synchronous anchor list and second synchronous anchor list is inconsistent, the DCD terminal sends content download request to the DCD server, synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor in the request download and second synchronous anchor list;
The DCD terminal receives the content that the DCD server provides by described content download request.
The embodiment of the invention also provides a kind of DCD server, takies in order to reduce the network bandwidth, alleviates synchronization processing pressure, and this DCD server comprises:
First receiver module is used to receive the content synchronization request of DCD terminal;
First sending module, first synchronous anchor list that is used for comprising the synchronous anchor that is used to identify current contents attribute information is sent to the DCD terminal;
Second receiver module, be used to receive the content download request that the DCD terminal sends, the content that described content download request is asked be in first synchronous anchor list, with second synchronous anchor list in inconsistent synchronous anchor institute corresponding content, the synchronous anchor in described second synchronous anchor is used to identify the existing contents attribute information of DCD terminal;
Second sending module is used for providing content by described content download request to the DCD terminal.
The embodiment of the invention also provides a kind of DCD terminal, takies in order to reduce the network bandwidth, alleviates synchronization processing pressure, and this DCD terminal comprises:
First sending module is used for sending the content synchronization request to the DCD server;
First receiver module is used to receive that the DCD server sends comprises first synchronous anchor list of the synchronous anchor that is used to identify current contents attribute information;
Comparison module is used for the synchronous anchor of first synchronous anchor list synchronous anchor with second synchronous anchor list that is used for identifying local existing contents attribute information is compared;
Second sending module, be used for when the synchronous anchor of first synchronous anchor list and the synchronous anchor in second synchronous anchor list are inconsistent, send content download request to the DCD server, synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor in the request download and second synchronous anchor list;
Second receiver module is used to receive the content that the DCD server provides by described content download request.
The embodiment of the invention also provides a kind of DCD system, takies in order to reduce the network bandwidth, alleviates synchronization processing pressure, and this DCD system comprises DCD terminal and DCD server, wherein:
The DCD terminal is used for initiating the content synchronization request to the DCD server; Be used to comprising of receiving that the DCD server provides to identify first synchronous anchor list of the synchronous anchor of current contents attribute information; The synchronous anchor of synchronous anchor in first synchronous anchor list with second synchronous anchor list that is used for identifying local existing contents attribute information compared; When the synchronous anchor in the synchronous anchor in first synchronous anchor list and second synchronous anchor list is inconsistent, send content download request to the DCD server, synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor in the request download and second synchronous anchor list; Receive the content that the DCD server provides;
The DCD server is used to receive described content synchronization request, and first synchronous anchor list is provided; Receive described content download request, and provide content by described content download request.
In the embodiment of the invention, after the DCD server received the content synchronization request of DCD terminal, first synchronous anchor list that will comprise the synchronous anchor that is used to identify current contents attribute information was sent to the DCD terminal; The DCD terminal compares the synchronous anchor of the synchronous anchor in first synchronous anchor list with second synchronous anchor list that is used for identifying local existing contents attribute information; When the synchronous anchor in the synchronous anchor in first synchronous anchor list and second synchronous anchor list is inconsistent, the DCD terminal sends content download request to the DCD server, synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor in the request download and second synchronous anchor list; The DCD terminal receives the content that the DCD server provides by described content download request, thereby utilizing synchronous anchor can identify current content, which has been meaningful identical with the DCD terminal, need not to upgrade, which is different with the existing content of DCD terminal, needs upgrade, the DCD terminal is no longer downloaded the content that need not to upgrade to the DCD service, but only download the content that needs renewal, not only network bandwidth requirements can be reduced, the synchronization processing pressure of DCD terminal and DCD server can also be alleviated.
Description of drawings
Fig. 1 is the flow chart that the DCD content synchronization is handled in the embodiment of the invention;
Fig. 2 is the flow chart of the instantiation that the DCD content synchronization is handled in the embodiment of the invention;
Fig. 3 determines the flow chart of the content that actual needs upgrades for DCD terminal in the embodiment of the invention;
Fig. 4, Fig. 5 are the structural representation of DCD server in the embodiment of the invention;
Fig. 6, Fig. 8 are the structural representation of DCD terminal in the embodiment of the invention;
Fig. 7 is the structural representation of comparison module in the embodiment of the invention;
Fig. 9 is the structural representation of DCD system in the embodiment of the invention.
Embodiment
Below in conjunction with Figure of description the embodiment of the invention is elaborated.
As shown in Figure 1, in the embodiment of the invention, DCD content synchronization handling process comprises:
After step 101, DCD server received the content synchronization request of DCD terminal, first synchronous anchor list that will comprise the synchronous anchor that is used to identify current contents attribute information was sent to the DCD terminal.
When the synchronous anchor in step 103, the synchronous anchor in first synchronous anchor list and second synchronous anchor list is inconsistent, the DCD terminal sends content download request to the DCD server, synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor in the request download and second synchronous anchor list.
In the embodiment of the invention, for each bar content is provided with the synchronous anchor of a correspondence, be used for the attribute information of this content of unique identification, synchronous anchor can be made up of some symbols, for example:
h7gd0vk＝e.ewopg8q3.5k.0.ixeanzuw.8，dfaesd32＝e.ewopg8q3.5k.0.35fdfwrwfd.8。
Each synchronous anchor can be through encrypting.The synchronous anchor of many contents is formed synchronous anchor list, each synchronous anchor can be separated with comma or other symbols, is used to identify the attribute information of the synchronous current all the elements of the attribute information of all the elements of DCD terminal current cache or DCD server desire.
Among the embodiment, after the DCD server receives the content synchronization request of DCD terminal, from described content synchronization request, extract second synchronous anchor list; According to the synchronous anchor in second synchronous anchor list, obtain current content from content source.
Provide an instantiation of DCD content synchronization in the embodiment of the invention below:
In this example, when the DCD server carries out content synchronization first, give the DCD terminal in the lump synchronously with the synchronous anchor and the content information of every content.Content that the preservation of DCD terminal is got off synchronously and corresponding synchronous anchor.Handling process when then as shown in Figure 2, carry out the DCD content synchronization next time is as follows:
Step 201, when the time of setting in advance arrives, the DCD terminal is initiated the content synchronization request; Or initiatively trigger the DCD terminal and initiate the content synchronization request by mode such as refreshing by the user; Or initiatively trigger the DCD terminal by the DCD server and initiate the content synchronization request.
Step 202, DCD terminal are initiated the content synchronization request to the DCD server.
The DCD terminal can be with the synchronous anchor of all the elements correspondence of buffer memory on the current DCD terminal by the content synchronization request, and promptly second synchronous anchor list is informed the DCD server.For example, carry the attribute information of existing each bar content on the current DCD terminal by the synchronous anchor list field in content synchronization request message head field, the synchronous anchor of many contents separates with ", " or other intersymbols.
Step 203, DCD server find content according to the synchronous anchor in second synchronous anchor list, obtain current content from content source, content after promptly upgrading is carried out encapsulation process, and the synchronous anchor of the content after the renewal that will obtain from content source by content synchronization response, promptly first synchronous anchor list returns to the DCD terminal.
Each synchronous anchor is decrypted in first synchronous anchor list that step 204, DCD terminal are returned the DCD server; If the deciphering failure, then the DCD terminal can not send content download request to the DCD server, this content synchronization failure.If successful decryption then continues execution in step 205.
Step 205, needed to upgrade synchronously by which content of DCD terminal judges, which content remains unchanged.Judge whether that from the DCD server the criterion of certain bar content is synchronously: when the synchronous anchor and the synchronous anchor of DCD server desire synchronizing content of DCD terminal buffers content were inconsistent, the DCD terminal just can be upgraded this content synchronously; Otherwise when both were consistent, the DCD terminal can not repeat to synchronous this content of DCD server requests when then this upgraded.
In this example, the DCD terminal compares the synchronous anchor in the synchronous anchor in first synchronous anchor list and second synchronous anchor list, and inconsistent synchronous anchor is screened, and determines the content that actual needs upgrades.
Step 206, determine that when the DCD terminal this is actual when wanting synchronous content, send content download request to the DCD server, request download with second synchronous anchor list in synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor.
Step 207, DCD server receive the content download request of DCD terminal, and download response according to this content download request to DCD terminal returned content, push the content of this renewal.
Among the embodiment, each synchronous anchor can comprise one of timestamp, server identification (Server id) of content identification (feed id), institute's corresponding content of institute's corresponding content or combination in any, can be through after encrypting, and unique location institute corresponding content.
If the synchronous anchor in the synchronous anchor list comprises the content identification of institute's corresponding content; Then the DCD terminal can be earlier compares the content identification of synchronous anchor institute corresponding content in the content identification of synchronous anchor institute corresponding content in first synchronous anchor list and second synchronous anchor list; Follow-up DCD terminal request is downloaded synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of content identification of synchronous anchor institute corresponding content in the content identification of institute's corresponding content and second synchronous anchor list.
If the synchronous anchor in the synchronous anchor list also comprises the timestamp of institute's corresponding content; When then the content identification of DCD terminal synchronous anchor institute corresponding content in first synchronous anchor list is consistent with the content identification of synchronous anchor institute corresponding content in second synchronous anchor list, can further compare the timestamp of synchronous anchor institute corresponding content in the timestamp of synchronous anchor institute corresponding content in first synchronous anchor list and second synchronous anchor list; Follow-up DCD terminal request is downloaded synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of timestamp of synchronous anchor institute corresponding content in the timestamp of institute's corresponding content and second synchronous anchor list.
If the synchronous anchor in the synchronous anchor list also comprises server identification; Before then the content identification of synchronous anchor institute corresponding content compares in the content identification of DCD terminal synchronous anchor institute corresponding content in first synchronous anchor list and second synchronous anchor list, the server identification of synchronous anchor determines whether the DCD server is legal in the server identification that can also be by synchronous anchor in first synchronous anchor list relatively and second synchronous anchor list; Follow-up when definite DCD server legitimacy, the DCD terminal compares the content identification of synchronous anchor institute corresponding content in the content identification of synchronous anchor institute corresponding content in first synchronous anchor list and second synchronous anchor list.
As shown in Figure 3, in the instantiation, the DCD terminal determines that the content that actual needs upgrades can comprise following handling process in the step 205 of flow process shown in Figure 2:
Attribute and values thereof such as the content identification of step 301, DCD terminal extraction institute corresponding content from each synchronous anchor after the deciphering, timestamp, server identification; The corresponding attribute of synchronous anchor that the DCD terminal is preserved the attribute that extracts and value with the DCD terminal successively compares and judges, carries out following processing at each bar synchronous anchor:
Among the embodiment, after the DCD terminal receives the content that described DCD server provides, second synchronous anchor list that preserve this locality need be updated to first synchronous anchor list, as the foundation of content synchronization next time.In this example, for legal DCD server, the DCD terminal is preserved first synchronous anchor list that server returns, relatively foundation when subsynchronous down, otherwise, can not preserve for illegal server DCD terminal.
The content identification of the synchronous anchor institute corresponding content that step 303, comparison DCD server provide and the synchronous anchor institute corresponding content sign that the DCD terminal is preserved.If certain bar synchronous anchor institute corresponding content sign that the DCD server provides is all inconsistent with any synchronous anchor institute corresponding content sign that the DCD terminal is preserved, then the DCD terminal judges that this content is the content that need upgrade; Otherwise if certain bar synchronous anchor institute corresponding content sign that the DCD server provides is consistent with certain bar synchronous anchor institute corresponding content sign of DCD terminal preservation, then execution in step 304, continue judgement time and stab.
Whether the timestamp of the synchronous anchor institute corresponding content of step 304, comparison identical content sign is consistent, if the timestamp of the identical synchronous anchor institute corresponding content that the timestamp of certain bar synchronous anchor institute corresponding content that the DCD server provides and DCD terminal are preserved is inconsistent, then the DCD terminal judges that this content is to need the content upgraded; Otherwise when the timestamp of identical content sign was consistent, the DCD terminal judged that this content is not need the content upgraded, does not need request to upgrade.
Specify embodiment of the invention method below more for example:
In this example, the DCD terminal arrives the content synchronization request of initiating because of the content update time of DCD server setting.Comprised the synchronous anchor list that present DCD terminal has had content among the synchronous anchor list X-DP-Sync-Anchor, the synchronous anchor in the tabulation adopts comma to cut apart.Indicating in the response message that the DCD server is replied wherein has 4 FEED (content) to order.The DCD terminal judges goes out wherein two and does not change that (19371abd2f 19371abd2e), has renewals (19371abd3a) in one of them, another content is the new order of user, originally DCD terminal (19371abd2g) that do not have.
Content synchronization request message wherein is as follows:
http://dcd.monternet.com/<nextURI>
X-DP-RequestType:retry
User-Agent:MOT-V300/xx.xx.xxR?DCD/1.5?Profile/MIDP-2.0?Configuration/CLDC-1.0
Version:2.0.0
X-DP-Sync-Anchor:19371abd2e＝125.1632ae1asd4，19371abd2f＝108.1632ae12wr4，19371abd3a＝126.1632af9835
X-DP-Errorcode:705
X-UP-CALLING-LINE-ID:13900010001
The content synchronization response message is as follows:
X-DP-NextURI:<nextURI>
X-DP-RequestType:retry
X-DP-Sync-Anchor:19371abd2e=125.1632ae1asd4 (this content synchronization anchor does not change), (19371abd2f=108.1632ae12wr4 this content synchronization anchor does not change), (19371abd3a=126.1632af9879 this content synchronization anchor changes), 19371abd2g=100.1632af9879 (newly-increased content)
Content-type:application/dcd.xml
<？xml?version＝″1.0″encoding＝″UTF-8″standalone＝″yes″？>
<！DOCTYPE?sync-pkg?xxxxxxxxxxxxxx><！--refers?to?a?version?of?a?dtd-->
<sync-pkg>
<meta>
<feed-meta?ctxt-id＝″19371abd2e″anchor＝″125.1632ae1asd4″target＝″container1″
/>
<feed-meta?ctxt-id＝″19371abd2f″anchor＝″108.1632ae?12wr4″target＝″container1″
/>
<feed-meta?ctxt-id＝″19371abd3a″anchor＝″126.1632af9879″target＝″container1″/>
<feed-meta?ctxt-id＝″19371abd2g″?anchor＝″100.1632af9879″target＝″container1″/>
</meta>
<feed?ctxt-id＝″19371abd2g″entry-template-id＝″89a093effa″>
<title>Monternet?News</title>
<summary>This?is?Monternet.</summary>
<link?rel＝″alternate″type＝″text/html″href＝″http://meerkat.oreillynet.com/″/>
<entry?ctxt-id＝″3a12ab24e2″/>
<entry?ctxt-id＝″3a12ab24e1″template-id＝″89a093effa″>
<title>Refining?for?usability</title>
<summary>In?a?world?where?software?relies?on?the?community?that?creates?it，
how?do?we?formulate?asingular?direction?for?our?users？
</summary>
<link?rel＝″alternate″type＝″text/html″
href＝″http://dcd.monternet.com/viewContent？ctxtid＝3a12ab24e1″/>
<content type＝″image/gif″mode＝″binary″name＝″image1″
Ctxt-id=" 09929a9237 (needing to download synchronously) "/〉
<issued>1085100102474</issued>
</entry>
<entry?ctxt-id＝″987a984efb″template-id＝″89a093effb″>
<title>Wireless?Access?in?Beijing?Airport</title>
＜summary〉test Beijing pilot system＜/summary 〉
<link rel＝″alternate″ type＝″text/html″
href＝″http://www.monternet.com/wireless.htm″/>
<content type＝″image/gif″ mode＝″binary″ name＝″image1″
Ctxt-id=" 09929a9238 (needing to download synchronously) " href=" http://mg.monternet.com/elements/09929a9238 "/〉
<content type＝″audio/x-mpeg-3″ mode＝″binary″ name＝″musicPreview1″
Ctxt-id=" 09929a9239 (needing to download synchronously) "/〉
<issued>1085100102474</issued>
</entry>
<entry?ctxt-id＝″3a12ab24e3″/>
</feed>
</sync-pkg>
Content download request message is as follows:
http://dcd.menternet.com/<nextURI>
X-DP-RequestType:data2
X-DP-Request-Id:09929a9237,09929a9239,09929a9238 (resource that terminal will need to download is synchronously informed platform)
User-Agent:MOT-V300/xx.xx.xxR?DCD/1.5Profile/MIDP-2.0?Configuration/CLDC-1.0
Version:2.0.0
X-UP-CALLING-LINE-ID:13900010001
It is as follows that content is downloaded response message:
X-DP-NextURI:<nextURI>
X-DP-RequestType:data2
X-DP-Request-Id:09929a9237,09929a9239,09929a9238 (platform will be downloaded source synchronous to terminal according to the resource id of terminal request)
Content-Type:multipart/mixed；
boundary＝unique-boundary-1
--unique-boundary-1
Content-Type:image/gif
Content-Transfer-Encoding:binary
Content-Id:2381959ab
...binary?image?data?goes?here....
--unique-boundary-1
Content-Type:image/gif
Content-Transfer-Encoding:binary
Content-Id:21876839ge
...binary?image?data?goes?here....
--unique-boundary-1
Content-Type:image/gif
Content-Transfer-Encoding:binary
Content-Id:ab19940acd
...binary?image?data?goes?here....
--unique-boundary-1--
Based on same inventive concept, the embodiment of the invention also provides a kind of DCD server, and its structure can comprise as shown in Figure 4:
First sending module 402 is used for being sent to the DCD terminal with comprising synchronous anchor first synchronous anchor list that is used to identify current contents attribute information;
Second sending module 404 is used for providing content by described content download request to the DCD terminal.
As shown in Figure 5, DCD server shown in Figure 4 can also comprise:
Based on same inventive concept, the embodiment of the invention also provides a kind of DCD terminal, and its structure can comprise as shown in Figure 6:
First sending module 601 is used for sending the content synchronization request to the DCD server;
Among the embodiment, the synchronous anchor in the synchronous anchor list comprises the content identification of institute's corresponding content; Then as shown in Figure 7, comparison module 603 can comprise:
Content identification comparing unit 6031 is used for the content identification of synchronous anchor institute corresponding content in the content identification of the first synchronous anchor list synchronous anchor institute corresponding content and second synchronous anchor list is compared;
Then second sending module 604 can also be used for asking downloading synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of content identification of the content identification of institute's corresponding content and the second synchronous anchor list synchronous anchor institute corresponding content.
Among the embodiment, the synchronous anchor in the synchronous anchor list also comprises the timestamp of institute's corresponding content; Then as shown in Figure 7, comparison module 603 can also comprise:
Then second sending module 604 can also be used for asking downloading synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of timestamp of the timestamp of institute's corresponding content and the second synchronous anchor list synchronous anchor institute corresponding content.
Among the embodiment, the synchronous anchor in the synchronous anchor list also comprises server identification; Then as shown in Figure 7, comparison module 603 can also comprise:
Server identification comparing unit 6033, be used at described content identification comparing unit before the content identification of synchronous anchor institute corresponding content compares in the content identification of the first synchronous anchor list synchronous anchor institute corresponding content and second synchronous anchor list, the server identification of synchronous anchor determines whether the DCD server is legal in the server identification by synchronous anchor in first synchronous anchor list relatively and second synchronous anchor list;
Then content identification comparing unit 6031 can also be used for when definite DCD server legitimacy, and the content identification of synchronous anchor institute corresponding content in the content identification of synchronous anchor institute corresponding content in first synchronous anchor list and second synchronous anchor list is compared.
As shown in Figure 8, among the embodiment, DCD terminal shown in Figure 6 can also comprise:
Synchronous anchor list update module 606, be used for after described second receiver module 605 receives the content that the DCD server provides, second synchronous anchor list that this locality is preserved is updated to first synchronous anchor list that described first receiver module 602 receives, as the foundation of first sending module, 601 initiation content synchronization requests next time.
Based on same inventive concept, the embodiment of the invention also provides a kind of DCD system, and its structure comprises DCD terminal 901 and DCD server 902 as shown in Figure 9, wherein:
DCD server 902 is used to receive described content synchronization request, and first synchronous anchor list is provided; Receive described content download request, and provide content by described content download request.
Whether twice update content be identical before and after the embodiment of the invention was considered, by the synchronous anchor of content is set, in line with the principle that the content of renewal is only arranged synchronously, avoid the DCD terminal to the synchronous duplicate contents of DCD server requests, can reduce the synchronization processing pressure of network bandwidth requirements, alleviation DCD terminal and DCD server.
In addition, the synchronous anchor of being introduced in the embodiment of the invention, combine other attributes such as content identification, timestamp, server identification of institute's corresponding content, and mutual at DCD server and DCD terminal room through encrypting the back, make the synchronizing content location more precisely effectively, secure and trusted.
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, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1, the content synchronization method of a kind of dynamic content dispensing DCD is characterized in that, this method comprises:
After the DCD server received the content synchronization request of DCD terminal, first synchronous anchor list that will comprise the synchronous anchor that is used to identify current contents attribute information was sent to the DCD terminal;
The DCD terminal compares the synchronous anchor of the synchronous anchor in first synchronous anchor list with second synchronous anchor list that is used for identifying local existing contents attribute information;
When the synchronous anchor in the synchronous anchor in first synchronous anchor list and second synchronous anchor list is inconsistent, the DCD terminal sends content download request to the DCD server, synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor in the request download and second synchronous anchor list;
The DCD terminal receives the content that the DCD server provides by described content download request.
2, the method for claim 1 is characterized in that, the DCD server further comprises after receiving the content synchronization request of DCD terminal:
From described content synchronization request, extract second synchronous anchor list;
According to the synchronous anchor in second synchronous anchor list, obtain current content from content source.
3, the method for claim 1 is characterized in that, the synchronous anchor in the synchronous anchor list comprises content identification;
Described DCD terminal compares the synchronous anchor in the synchronous anchor in first synchronous anchor list and second synchronous anchor list, comprising: the DCD terminal compares content identification in the content identification in first synchronous anchor list and second synchronous anchor list;
Described DCD terminal request download with second synchronous anchor list in inconsistent first synchronous anchor list of synchronous anchor synchronous anchor institute corresponding content comprise: the DCD terminal request download with second synchronous anchor list in content identification institute corresponding content in inconsistent first synchronous anchor list of content identification.
4, method as claimed in claim 3 is characterized in that, the synchronous anchor in the synchronous anchor list also comprises timestamp;
Described DCD terminal compares synchronous anchor in first synchronous anchor list and synchronous anchor in second synchronous anchor list and comprises: the DCD terminal is when content identification is consistent in content identification and second synchronous anchor list in first synchronous anchor list, further timestamp in the timestamp and second synchronous anchor list in first synchronous anchor list relatively;
Described DCD terminal request download with second synchronous anchor list in inconsistent first synchronous anchor list of synchronous anchor synchronous anchor institute corresponding content comprise: the DCD terminal request download with second synchronous anchor list in timestamp institute corresponding content in inconsistent first synchronous anchor list of timestamp.
5, method as claimed in claim 3 is characterized in that, the synchronous anchor in the synchronous anchor list also comprises server identification;
Described DCD terminal is with before content identification compares in the content identification in first synchronous anchor list and second synchronous anchor list, further comprise: the DCD terminal determines by server identification in the server identification and second synchronous anchor list in comparison first synchronous anchor list whether the DCD server is legal;
When definite DCD server legitimacy, the DCD terminal compares content identification in the content identification in first synchronous anchor list and second synchronous anchor list.
6, the method for claim 1 is characterized in that, after the DCD terminal received the content that described DCD server provides, further second synchronous anchor list that this locality is preserved was updated to first synchronous anchor list.
7, a kind of DCD server is characterized in that, comprising:
First receiver module is used to receive the content synchronization request of DCD terminal;
First sending module, first synchronous anchor list that is used for comprising the synchronous anchor that is used to identify current contents attribute information is sent to the DCD terminal;
Second receiver module, be used to receive the content download request that the DCD terminal sends, the content that described content download request is asked be in first synchronous anchor list, with second synchronous anchor list in inconsistent synchronous anchor institute corresponding content, the synchronous anchor in described second synchronous anchor is used to identify the existing contents attribute information of DCD terminal;
Second sending module is used for providing content by described content download request to the DCD terminal.
8, DCD server as claimed in claim 7 is characterized in that, also comprises:
Extraction module is used for extracting second synchronous anchor list from the content synchronization request that described first receiver module receives;
Acquisition module is used for the synchronous anchor according to second synchronous anchor list of extraction module extraction, obtains current content and offers first sending module, second sending module from content source.
9, a kind of DCD terminal is characterized in that, comprising:
First sending module is used for sending the content synchronization request to the DCD server;
First receiver module is used to receive that the DCD server sends comprises first synchronous anchor list of the synchronous anchor that is used to identify current contents attribute information;
Comparison module is used for the synchronous anchor of first synchronous anchor list synchronous anchor with second synchronous anchor list that is used for identifying local existing contents attribute information is compared;
Second sending module, be used for when the synchronous anchor of first synchronous anchor list and the synchronous anchor in second synchronous anchor list are inconsistent, send content download request to the DCD server, synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor in the request download and second synchronous anchor list;
Second receiver module is used to receive the content that the DCD server provides by described content download request.
10, DCD terminal as claimed in claim 9 is characterized in that, the synchronous anchor in the synchronous anchor list comprises content identification;
Described comparison module comprises:
The content identification comparing unit is used for content identification in the first synchronous anchor list content identification and second synchronous anchor list is compared;
Described second sending module be further used for request download with second synchronous anchor list in content identification institute corresponding content in inconsistent first synchronous anchor list of content identification.
11, DCD terminal as claimed in claim 10 is characterized in that, the synchronous anchor in the synchronous anchor list also comprises timestamp;
Described comparison module further comprises:
The timestamp comparing unit is used for when the first synchronous anchor list content identification is consistent with content identification in second synchronous anchor list, timestamp in the timestamp and second synchronous anchor list in comparison first synchronous anchor list;
Described second sending module be further used for request download with second synchronous anchor list in timestamp institute corresponding content in inconsistent first synchronous anchor list of timestamp.
12, DCD terminal as claimed in claim 10 is characterized in that, the synchronous anchor in the synchronous anchor list also comprises server identification;
Described comparison module further comprises:
The server identification comparing unit, be used at described content identification comparing unit before content identification compares in the first synchronous anchor list content identification and second synchronous anchor list, by server identification in the server identification and second synchronous anchor list in comparison first synchronous anchor list, determine whether the DCD server is legal;
Described content identification comparing unit is further used for when definite DCD server legitimacy content identification in the content identification in first synchronous anchor list and second synchronous anchor list being compared.
13, DCD terminal as claimed in claim 9 is characterized in that, also comprises:
The synchronous anchor list update module, be used for after described second receiver module receives the content that the DCD server provides, second synchronous anchor list that this locality is preserved is updated to first synchronous anchor list that described first receiver module receives, as the foundation of the content synchronization of first sending module initiation next time request.
14, a kind of DCD system is characterized in that, comprises DCD terminal and DCD server, wherein:
The DCD terminal is used for initiating the content synchronization request to the DCD server; Be used to comprising of receiving that the DCD server provides to identify first synchronous anchor list of the synchronous anchor of current contents attribute information; The synchronous anchor of synchronous anchor in first synchronous anchor list with second synchronous anchor list that is used for identifying local existing contents attribute information compared; When the synchronous anchor in the synchronous anchor in first synchronous anchor list and second synchronous anchor list is inconsistent, send content download request to the DCD server, synchronous anchor institute corresponding content in inconsistent first synchronous anchor list of synchronous anchor in the request download and second synchronous anchor list; Receive the content that the DCD server provides;
The DCD server is used to receive described content synchronization request, and first synchronous anchor list is provided; Receive described content download request, and provide content by described content download request.
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| CN200810118664A CN101656652A (en) | 2008-08-21 | 2008-08-21 | Content synchronization method, equipment and system for dynamic content delivery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546708A (en) * | 2010-12-27 | 2012-07-04 | 阿里巴巴集团控股有限公司 | Plug-in obtaining method and system as well as relevant devices |
| CN103634410A (en) * | 2013-12-12 | 2014-03-12 | 北京奇虎科技有限公司 | Data synchronization method based on content distribution network (CDN), client end and server |
| CN106161623A (en) * | 2016-07-05 | 2016-11-23 | 上海帝联信息科技股份有限公司 | Caching server, renewal server and data-updating method |
| CN106202387A (en) * | 2016-07-08 | 2016-12-07 | 陈光宇 | A kind of data consistency concurrent maintenance method |
| CN106547485A (en) * | 2016-10-20 | 2017-03-29 | 广东欧珀移动通信有限公司 | Data migration method and device |
| CN109743345A (en) * | 2018-11-16 | 2019-05-10 | 北京奇艺世纪科技有限公司 | A kind of data sending, receiving method, device, server and client |
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- 2008-08-21 CN CN200810118664A patent/CN101656652A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546708A (en) * | 2010-12-27 | 2012-07-04 | 阿里巴巴集团控股有限公司 | Plug-in obtaining method and system as well as relevant devices |
| CN102546708B (en) * | 2010-12-27 | 2015-04-29 | 阿里巴巴集团控股有限公司 | Plug-in obtaining method and system as well as relevant devices |
| CN103634410A (en) * | 2013-12-12 | 2014-03-12 | 北京奇虎科技有限公司 | Data synchronization method based on content distribution network (CDN), client end and server |
| CN103634410B (en) * | 2013-12-12 | 2017-01-11 | 北京奇安信科技有限公司 | Data synchronization method based on content distribution network (CDN), client end and server |
| CN106161623A (en) * | 2016-07-05 | 2016-11-23 | 上海帝联信息科技股份有限公司 | Caching server, renewal server and data-updating method |
| CN106202387A (en) * | 2016-07-08 | 2016-12-07 | 陈光宇 | A kind of data consistency concurrent maintenance method |
| CN106202387B (en) * | 2016-07-08 | 2019-05-21 | 苏州超块链信息科技有限公司 | A kind of data consistency concurrent maintenance method |
| CN106547485A (en) * | 2016-10-20 | 2017-03-29 | 广东欧珀移动通信有限公司 | Data migration method and device |
| CN109743345A (en) * | 2018-11-16 | 2019-05-10 | 北京奇艺世纪科技有限公司 | A kind of data sending, receiving method, device, server and client |
| CN109743345B (en) * | 2018-11-16 | 2021-08-13 | 北京奇艺世纪科技有限公司 | Data sending and receiving method, device, server and client |
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