CN1187695C - Data fast taking system for server and its data updating method - Google Patents
Data fast taking system for server and its data updating method Download PDFInfo
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- CN1187695C CN1187695C CNB011098716A CN01109871A CN1187695C CN 1187695 C CN1187695 C CN 1187695C CN B011098716 A CNB011098716 A CN B011098716A CN 01109871 A CN01109871 A CN 01109871A CN 1187695 C CN1187695 C CN 1187695C
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Abstract
The present invention relates to a data quick-access system and a data updating method for a server. The method comprises the following procedures that a. after original data is altered, a signal is sent to a quick-access service terminal from a database service terminal, wherein the signal comprises altered original data associated information; after the quick-access service terminal receives the signal, altered original data is downloaded from the database service terminal; the quick-access service terminal replaces the quick-access data with the downloaded data. The system comprises a user terminal, the quick-access service terminal connected with a network and the database service terminal, wherein the quick-access service terminal comprises a quick-access memory and quick-access updating programs. The present invention can leave out unnecessary network transmission and save resources.
Description
Technical field
The present invention relates to the server of a kind of computer internet, particularly a kind of data in server fast taking system and data-updating method thereof, the data storing that its function is user side was downloaded is in the memory cache of server, to reduce the time of downloading once more.
Background technology
Fast development along with the network communications technology, diverse network is used widely all trades and professions utilization of software and hardware, as LAN (Local Area Network), WAN (Wide Area Network), Intranet and Internet etc., become the pith of people's daily life.
Network is by unified transfer protocol, make a certain node in the network information such as sound, image and literal can be sent to another node or from another node data download or webpage, be to use Hypertext Transfer Protocol (Hyper Text Transfer Protocol-HTTP) as Internet, cordless communication network then uses WAP (Wireless ApplicationProtocol-WAP).In other words, as long as two nodes are arranged in consolidated network, the user can reach any place at any time and carry out information transmission from a node and another node, reach information circulation and shared purpose fast.Utilize various communication network to connect, to increase the node number of network, not only enlarged the utilization factor of shareable resource, the distance of more extensible communication is to each corner, brought up the network world of not having today can't be obtained.
Communication network normally adopts principal and subordinate's radial configuration, and promptly a server connects several user sides, and several servers are connected to master server, and master server is connected to network again, and its principal and subordinate's level number differs.Therefore, user side needs just can communicate transmission with other nodes on the network by server.Generally speaking, can be stored in the server, when user's desire is downloaded the data that far-end server had, need by one or more server usually for data downloaded.At first, its downloading request will be sent to the server of local side earlier, via the server of the local side server by other levels with downloading request be sent to have desire the far-end server of data download.After receiving downloading request, this far-end server is desired data downloaded is sent to local side by other servers server with being about to.At last, the server of local side receives data, is about to these data and passes to user side, is available for users to browse.
In above-mentioned transmission course, when if a server being arranged excessive or network congestion postponing processing speed because of workload, assign downloading request from the user and can prolong to receiving data download institute elapsed time, the time waste that it caused be not a big problem on network uses.For overcoming the delay phenomenon of Network Transmission.Now developed and network and get (cache) mechanism soon, so that the data transmission efficiency of network system is higher, with regard to existing network fast taking system, it normally cooks up a memory block on the server of local side, the previous data of once downloading from far-end server of user are reserved one get the backup shelves soon, in this memory block, when person to be used desires to download these data once more, the local side server does not promptly need once more line from the far-end server repeated downloads, in the memory block this caching data is drawn the user since then, like this, just can save data and transmit the spent time, system's utilization benefit is improved.
Generally speaking, the local side server will be got Backup Data soon and preserve one section special time, be able to quick-downloading when requiring these data once more with person to be used.If this data content is originally as a transition information, promptly continue the data of change in time, as Internet news or stock index etc., following situation then takes place most probably, promptly all raw data of stored caching data of local side server and far-end server is inconsistent.Its reason promptly within this special time, upgrade by the raw data that is stored in far-end server, and the stored caching data of local side server still is the backup of the previous raw data of not upgrading.At this moment, do not perceiving under the situation that data have changed, the data that the user browsed will be out-of-date data, but not the data after having upgraded.
According to above-mentioned, as can be known, when the local side server does not provide network to get function soon, the reading requirement of user side all will be sent to the far-end server that stores raw data.At this moment, the obtained data of user will be raw data.Otherwise when the local side server provides the function that network gets soon, within this holding time, user side will only be sent to the local side server that stores caching data to the reading requirement of same data, and not store the far-end server of raw data.At this moment, the obtained data of user will be caching data, rather than raw data.
Summary of the invention
The object of the present invention is to provide a kind of data in server fast taking system and data-updating method thereof, caching data and raw data are consistent as far as possible.
For achieving the above object, the present invention takes following technical measures:
In the present invention, user side at first is stored in the raw data of database service end by getting downloaded soon.The database service termination is received the downloading request of user side, is about to raw data and gives user side by getting the service end transmission soon.In this process, get service end soon raw data is stored to the memory cache of getting service end soon, form the caching data of raw data.The caching data for the treatment of raw data has been stored to the memory cache of getting service end soon, to the once more downloading request of later user side to raw data, gets service end soon and promptly returns caching data.
When the raw data change that is stored in the database service end, when promptly producing new raw data, at this moment, caching data is inconsistent with new raw data.
In one embodiment of the invention, get the service end custodian soon according to a specified criteria, extremely get service end soon, caching data is upgraded in the new raw data of special time data download storehouse service end again, when producing new caching data, new caching data is consistent with new raw data.
In the another embodiment of the present invention, the database service end is in the raw data change, promptly produce new raw data after, send a update signal and give and get service end soon.Get the built-in resident program of service end soon, detect the update signal that transmits from the database service end.Receiving update signal, learning the raw data change that is stored in the database service end, resident program at once again the new raw data of data download storehouse service end caching data upgraded producing new caching data to getting service end soon.At this moment, new caching data is consistent with new raw data.
In the another embodiment of the present invention, after the update signal that resident program reception database service end transmits, do not carry out the download action of new raw data immediately, but after treating the change scale arrival to a certain degree of raw data, just download, to avoid unnecessary system resource waste.
The present invention includes following main points:
(1) provide a network service end data transmission structure, but the caching data that makes the Data Update action immediate reaction of a service end go out another service end upgrades.
(2) providing a network caching data method for updating, is by getting the running that cooperatively interacts between service end and database service end soon, so that caching data and raw data are consistent.
(3) provide a network to get service end soon, have the previous function of download of network data of stored user end, and can download raw data again, to upgrade its stored caching data according to different situations.
(4) provide a database service end, get service end soon to send a signalisation after changing in data, so that caching data is upgraded.
(5) provide a resident program getting service end soon, the refresh routine of the signal enabling caching data that transmits according to database.
(6) provide a frequency counter, write down the change situation of raw data, and start the refresh routine of caching data according to this.
Fast taking system of the present invention and method are specifically described as follows:
The data-updating method of a kind of data in server fast taking system of the present invention, raw data are stored in a database service end, and caching data is stored in one and gets service end soon, the database service end with get service end soon and be connected by network; Comprise the following steps:
(a) after changing, send a signal by the database service end and got service end soon, this signal comprises the relevant information of the raw data that has changed in raw data;
(b) number of times and the time of changing by frequency counter record raw data is so that start the change of raw data according to the time of setting;
(c) getting soon after service end receives this signal, getting service end soon and download after changing raw data from the database service end;
(d) after raw data download is after changing finished, get service end soon the raw data of being downloaded is after changing replaced caching data.
A kind of service end fast taking system that dynamically updates caching data of the present invention is characterized in that, includes:
One user side;
One gets service end soon, is connected to described service end by network, is used to provide the data to described user side to get service soon;
One database service end is connected to the described service end of getting soon by network, is used for providing required caching data to the described service end of getting soon,
Wherein said get soon service end include be connected with described user side one get server soon, be used for the data read requirement of importing into according to described user side, propose the data downloading request to described database service end, and after obtaining data, be transferred to described user side; Get the memory cache that server is connected soon with described, be used for taking from soon described database service end data downloaded, so that be transferred to described user side fast by the described server of getting soon; With with described get soon that server is connected one get updating block soon, be used for instruction according to Express server, download the raw data of a change and replace corresponding raw data in the described memory cache, the wherein said updating block of getting soon comprises a frequency counter, be used to calculate a condition, after making that described condition satisfies, this is got service end soon and downloads the raw data of described change from described database service end
Wherein said database service end includes a database, is used to provide the storage area of data download; Get the data server that service end links to each other with described database soon with described respectively, be used to accept the described data downloading request that service end is imported into of getting soon, data are taken out and downloaded from described database.
The data-updating method of data in server fast taking system of the present invention comprises the steps:
Be received from the signal that the database service end imports into, this signal comprises the relevant information of raw data change:
Write down this signal;
Draw the condition of upgrading caching data according to tracer signal;
When this condition satisfies, carry out the program of upgrading caching data.
Compared with prior art, the present invention has following effect:
The present invention can exempt unnecessary Network Transmission, saves resource.
The data storing that function of the present invention is user side was downloaded is in the memory cache of server, to reduce the time of downloading once more.
Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows architectural feature of the present invention and method feature:
Description of drawings:
Fig. 1 is the structural representation of service end fast taking system of the present invention;
Fig. 2 A to Fig. 2 C is the operation workflow synoptic diagram of service end fast taking system of the present invention;
Fig. 3 is for getting the process flow diagram of getting refresh routine in the service end soon soon.
Embodiment
The structure of caching data of the present invention and method can make the caching data after changing can immediate updating in raw data, in order to reduce the database service end and to get the number of transmissions between service end soon, also can shorten the pick-up time of data on the other hand on the one hand.
As shown in Figure 1, it is the structural representation of service end fast taking system of the present invention, and service end fast taking system of the present invention comprises user side 130, gets service end 150 and database service end 170 soon, and the three links up each other by wired or wireless network.Except that user 130, get service end 150 soon and can provide the service of getting soon to other user sides simultaneously.In addition, except that the data of database service end 170, get the data that service end 150 also can be got other data, services ends simultaneously soon soon.
Database service end 170 comprises database 177 and data server 175.Database 177 is a readable and writable memory, and the storage area of data download is provided.Database server 175 is a server software, can accept to get soon certainly the data downloading request that service end 150 is imported into once carrying out, and data are taken out and downloaded from database 177.In addition, database service end 170 also comprises a data process software 179, and in order to the stored data of change database 177, and the Data Base Administrator is by operation output unit 171 and input media 172, carries out the operations of database service end 170.
Getting service end 150 soon comprises memory cache 157 and gets server 155 soon.Memory cache 157 is in order to take from database service end 170 data downloaded soon, so that quick-downloading to user side 130.Getting server 155 soon is a server software, can be once carrying out according to the data read requirement of importing into from user side, propose the data downloading request to database service end 170, and after obtaining data, be transferred to user side, in memory cache 157, store the caching data of a backup simultaneously.As the Data Base Administrator, get the service end Contract Manager soon and get service end 150 soon by output unit 151 and 152 pairs of input medias and operate and manage.
In one embodiment of the invention, get the characteristic of service end 150 soon according to the different user end, produce various dynamic web page by mechanism just at operation service page or leaf (Active Server Page-ASP), produce the dynamic data combination of execution result according to this, promptly be stored in the memory cache 157 with form just at the operation service page data.The combination of this dynamic data comprises data and the stored data of other database service end that database 177 is stored.Be simplified illustration, the following stated only comprises a raw data 111 of database 177.
Shown in Fig. 2 A, when user's 130 desires carry out one just at operation service page or leaf (ASP) shelves by getting service end 150 soon, (step 1) when database service end 170 reads raw data 111, get service end 150 soon and promptly link to database service end 170 (step 2), and stored raw data 111 (step 3) in the data download storehouse 177.Afterwards, fast service end 150 is by the execution of ASP shelves, data download is translated into network HTML (Hypertext Markup Language) (the Hyper Text Markup Language-HTML) formatted file of standard, be sent to user side 130 (step 4) again, and with this ASP data storing in memory cache 157, become the caching data 112 of raw data.When user side 130 is desired once more by getting service end 150 (step 5) when requiring these data soon, getting service end 150 soon just can will be stored in caching data 112 translations in the memory cache 157 and upload to user side 130 (step 6), download raw data 111 in database service end 170 once more.Like this, can reach the effect of the mechanism of getting soon.
When raw data 111 changes,, make caching data 112 inconsistent with the raw data 111 of changing because caching data 112 does not upgrade thereupon.At this moment, do not discovering under the situation that raw data 111 changed, user side may read out-of-date caching data 112.
Characteristics of the present invention are to provide a kind of refresh routine 159 of getting soon, to eliminate raw data 111 after changing, caching data 112 and the raw data 111 inconsistent problems of upgrading.After getting refresh routine 159 startups soon, it is stored in gets in the service end 150 soon, and its function is to accept update instruction, downloads and replace the operation of out-of-date caching data 112 to carry out the raw data 111 that will newly change.
According to the present invention, get refresh routine 159 soon when receiving the update instruction of caching data 112, at first by getting server 155 sends downloading request from the raw data 111 that a download upgraded to database service end 170 soon.Raw data 111 to be updated is downloaded and is finished, and is rewritten to out-of-date caching data 112 places and replaces it even get the raw data 111 of refresh routine 159 renewals soon.At this moment, out-of-date caching data 112 promptly is updated, and can eliminate with the raw data 111 inconsistent problems of upgrading.
In one embodiment of this invention, getting the service end Contract Manager soon can be according to specified criteria, and the instruction of sending renewal caching data 112 by output unit 151 and input media 152 is to getting refresh routine 159 soon.More the criterion of new data can be decided according to different use and data status according to this.For example, if raw data 111 has a fixing variable cycle, want as news daily or all major issue meters, then upgrade the frequency of caching data 112 and can follow this cyclical swing enforcement, reduce to minimum in the hope of making raw data 111 and 112 both inconsistent times of caching data.On the other hand, if raw data 111 does not have a fixing variable cycle, getting the service end Contract Manager soon still can be according to the refresh routine that the change of raw data 111 expectation is carried out caching data 112, and both are consistent as far as possible to make raw data 111 and caching data 112.
Shown in Fig. 2 B, it is served as reasons and gets the running synoptic diagram that service end 150 initialization caching datas 112 upgrade soon.In step 1, get service end 150 is sent downloading request from the raw data of having upgraded 111 to database service end 170 soon.In the step 2, database service end 170 is uploaded the raw data 111 upgraded to getting service end 150 soon, and caching data 112 is updated immediately.Afterwards, in step 3, user side 130 desires are downloaded raw data 111 by getting service end 150 soon.At last, in step 4, get the caching data 112 that service end 150 will upload renewal soon and give user side 130.
In another embodiment of the present invention, the update instruction of upgrading caching data 112 is to be sent by database service end 170.After raw data 111 was changed, database service end 170 promptly sent a signal of representing update instruction to getting service end 150 soon by network.In an embodiment of the present invention, this signal comprises title, unified resource (UniformResource Locator-URL) address and the change time of raw data 111, to inform that getting the raw data 111 that service end 150 is stored in database 177 has soon changed.This signal is carried out the refresh routine of caching data 112 immediately by after getting refresh routine 159 receptions soon.Treat that caching data 112 finishes renewal, caching data 112 is consistent with raw data 111 immediately.
According to this embodiment, because the signal of update instruction is after raw data 111 is changed, at once send by database service end 170, and get refresh routine 159 soon after receiving this signal, carry out the refresh routine of caching data 112 immediately, therefore raw data 111 and 112 both inconsistent times of caching data, deduction database service end 170 with get soon service end 150 between the two Network Transmission almost be bordering on zero after spent time.On the other hand, because the included data volume of this signal is less, it is transferred to by database service end 170, and to get the spent time of service end 150 soon few.In addition, the synchronizing process of above-mentioned caching data 112 and raw data 111, all by database service end 170 and get soon between 150 liang of systems of service end, the cooperation of software and hardware running can alleviate Data Base Administrator and the administrative loads of getting the service end Contract Manager soon greatly.
Shown in Fig. 2 C, it is to trigger the running synoptic diagram that caching data 112 upgrades by database service end 170.In step 1, database service end 170 sends signal that raw data 111 upgraded and gives and get service end 150 soon.In the step 2, get service end 150 is sent downloading request from the raw data of having upgraded 111 to database service end 170 soon.In the step 3, database service end 170 is uploaded the raw data 111 upgraded to getting service end 150 soon, and caching data 112 is updated immediately.Subsequently, in the step 4, user side 130 desires are downloaded raw data 111 by getting service end 150 soon.In the step 5, get the caching data 112 that service end 150 uploads renewal soon and give user side 130.
In another embodiment of the present invention, get refresh routine 159 soon and also comprise a frequency counter, in order to the number of times and time of change of record raw data 111.When raw data 111 changes, after getting refresh routine 159 soon and receiving the signal that database service ends 170 are passed on, do not carry out the refresh routine of caching data 112 immediately, but get off by the time keeping of frequency counter with this change.Wait until a renewal of being scheduled to during the marginal time, get the refresh routine that refresh routine 159 just carries out caching data 112 soon.In an embodiment of the present invention, upgrading the marginal time is the mean value that preceding ten raw data 111 are changed interval time.
The benefit of the foregoing description is as follows, when the variable cycle of raw data 111 not fixedly the time, can draw change expectation to raw data 111 summarys by its previous change record, according to this as the criterion of carrying out caching data 112 refresh routines in good time.
In the above-described embodiment, get refresh routine 159 soon behind the signal that reception database service end 170 is passed on, carry out the refresh routine of caching data 112 immediately, then only need to be made as zero the marginal time and get final product if desire to make.
In addition, in the above-described embodiments, getting the service end Contract Manager soon can be according to the change record of getting the frequency counter in the refresh routine 159 soon, follows the trail of the change situation of raw data 111, with as the system management reference.
As shown in Figure 3, it is for getting the operation workflow figure of refresh routine 159 soon.Wherein, in the step 301, program detects the signal that raw data 111 has changed.As if receiving this signal, expression raw data 111 has changed, then enters step 302, and the frequency counter record is time of change this time, and calculates the renewal marginal time according to previous change recording gauge.Then in step 303, program is judged institute's elapsed time after last time changing, and whether exceeds the renewal marginal time that frequency counter calculates.If not, then rebound step 301, and repetition above-mentioned steps.If, carry out the refresh routine of caching data 112 just enter step 305.After to be updated the finishing, promptly return step 301, and repeat above-mentioned steps.
In step 301,, then enter step 304 if do not detect the signal that raw data 111 has changed.At this moment,, promptly enter step 303 and judge institute's elapsed time after last time changing, whether exceed the renewal marginal time that frequency counter calculates by program if the Contract Manager does not assign the instruction of upgrading caching data 112 as yet.If do not exceed as yet, then rebound step 301, and repetition above-mentioned steps.If exceed, just enter step 305, carry out the refresh routine of caching data 112.After to be updated the finishing, just return step 301.On the other hand,, get refresh routine 159 soon and promptly receive this instruction, and enter step 305 immediately, carry out the refresh routine of caching data 112 in step 304 when the Contract Manager assigns the instruction of upgrading caching data 112.After to be updated the finishing, return step 301 again.
Foregoing is to utilize embodiment that technical characterictic of the present invention is described, is not to be used to limit protection scope of the present invention, even there is the people to change slightly on the basis of the present invention's design, must belong in protection scope of the present invention.
For example in the precedent, though explain with single raw data and single caching data, to being stored in several raw data of several database servers, the present invention all can produce corresponding caching data actually, to reach the purpose that data are got soon.For example sent again by the database service end, change signal in order to the raw data of getting service end 150 soon, except that the title that comprises raw data, address and the change time, still can comprise the service end information that stores raw data or the change situation of other related datas, so that get the service end utilization soon.
For instance, if being one, raw data changes in time between content up-to-date new, then change title, address and change time that signal can comprise other related news of this database, can be when raw data be downloaded so that get service end soon, also can optionally its related data be downloaded (for example only selecting three related datas to download) simultaneously, after user side learns that raw data has been upgraded, promptly desire to know the up-to-date change of its related data usually.So before user side requires this related data, promptly upgrade its caching data,, like this, just can reduce and get soon the time that service end is responded user side in advance for quick-downloading.
In addition, this signal also can only comprise the address of upgrading raw data, with length and the required time of Network Transmission that reduces this signal, increases the synchronous and consistance of raw data and caching data.These are all within protection scope of the present invention.
Claims (30)
1. the data-updating method of a data in server fast taking system, raw data is stored in a database service end, caching data is stored in one and gets service end soon, the database service end with get service end soon and be connected by network; Comprise the following steps:
(a) after changing, send a signal by the database service end and got service end soon, this signal comprises the relevant information of the raw data that has changed in raw data;
(b) number of times and the time of changing by frequency counter record raw data is so that start the change of raw data according to the time of setting;
(c) getting soon after service end receives this signal, getting service end soon and download after changing raw data from the database service end;
(d) after raw data download is after changing finished, get service end soon the raw data of being downloaded is after changing replaced caching data.
2. method according to claim 1 is characterized in that, in described step (a), described signal comprises the uniform resource address of raw data.
3. method according to claim 1 and 2 is characterized in that, also comprises the title of raw data at signal described in the described step (a).
4. method according to claim 1 is characterized in that, signal also comprises the change time of raw data in described step (a).
5. method according to claim 1 is characterized in that, also comprises the steps: the described content that service end writes down described signal of getting soon.
6, method according to claim 1, it is characterized in that in described step (b), described frequency counter comprises a marginal time value, when institute's elapsed time after the last caching data upgrades was worth greater than this marginal time, described condition could satisfy.
7. method according to claim 6 is characterized in that, described marginal time value is the mean value in the preceding several raw data change time interval.
8. method according to claim 6 is characterized in that, described marginal time value is made as zero.
9. method according to claim 1 is characterized in that, described signal also comprises and is positioned at the database service end, the relevant information of several the data relevant with the raw data of described change.
10. method according to claim 9 is characterized in that described signal comprises the uniform resource address of a dependency number data.
11. method according to claim 9 is characterized in that, described signal also comprises the title of a dependency number data.
12. method according to claim 9 is characterized in that, described signal also comprises the change time of a dependency number data.
13. method according to claim 9, it is characterized in that, also comprise the following steps: to be got soon after service end receives described signal by described, the related data relevant with the raw data of described change downloaded from described database service end in the content choice ground of basis signal.
14. the service end fast taking system that can dynamically update caching data is characterized in that, includes:
One user side;
One gets service end soon, is connected to described service end by network, is used to provide the data to described user side to get service soon;
One database service end is connected to the described service end of getting soon by network, is used for providing required caching data to the described service end of getting soon,
Wherein said get soon service end include be connected with described user side one get server soon, be used for the data read requirement of importing into according to described user side, propose the data downloading request to described database service end, and after obtaining data, be transferred to described user side; Get the memory cache that server is connected soon with described, be used for taking from soon described database service end data downloaded, so that be transferred to described user side fast by the described server of getting soon; With with described get soon that server is connected one get updating block soon, be used for instruction according to Express server, download the raw data of a change and replace corresponding raw data in the described memory cache, the wherein said updating block of getting soon comprises a frequency counter, be used to calculate a condition, after making that described condition satisfies, this is got service end soon and downloads the raw data of described change from described database service end
Wherein said database service end includes a database, is used to provide the storage area of data download; Get the data server that service end links to each other with described database soon with described respectively, be used to accept the described data downloading request that service end is imported into of getting soon, data are taken out and downloaded from described database.
15. service end fast taking system according to claim 14 is characterized in that described signal comprises the uniform resource address of raw data.
16. service end fast taking system according to claim 14 is characterized in that described signal comprises the title of raw data.
17. service end fast taking system according to claim 14 is characterized in that, described signal comprises the change time of raw data.
18. service end fast taking system according to claim 14 is characterized in that, the described updating block of getting soon also writes down described signal content.
19. service end fast taking system according to claim 14 is characterized in that, described frequency counter comprises a marginal time value, and when institute's elapsed time after the last caching data upgrades was worth greater than this marginal time, this condition could satisfy.
20. service end fast taking system according to claim 19 is characterized in that, described marginal time value is the mean value in the described several raw data change time interval.
21. service end fast taking system according to claim 19 is characterized in that, described marginal time value is made as zero.
22. service end fast taking system according to claim 14 is characterized in that, described signal also comprises and is positioned at described database service end, the relevant information of several the data relevant with the raw data of described change.
23. service end fast taking system according to claim 22 is characterized in that, described relevant information is the uniform resource address of described several data.
24. service end fast taking system according to claim 22 is characterized in that, described relevant information is the title of described several data.
25. service end fast taking system according to claim 22 is characterized in that, described relevant information is the change time of described several data.
26. service end fast taking system according to claim 22, it is characterized in that, comprise also that by the described service end of getting soon after receiving described signal, the content choice of basis signal ground is from the related data of described database service end download with the raw data of described change.
27. service end fast taking system according to claim 14, it is characterized in that, the described updating block of getting soon also receives the input signal that sends by the described input media of getting service end soon, downloads described raw data after changing from described database service end according to this.
28. the data-updating method of a data in server fast taking system comprises the steps:
Be received from the signal that the database service end imports into, this signal comprises the relevant information of raw data change:
Write down this signal;
Draw the condition of upgrading caching data according to tracer signal;
When this condition satisfies, carry out the program of upgrading caching data.
29. method according to claim 28 is characterized in that, also comprises the steps:
Optionally pick up the data relevant according to described tracer signal with described raw data from the database service end.
30. method according to claim 28 is characterized in that, also comprises the steps:
Receive the instruction that service end is sent by input media;
Carry out the program of upgrading caching data according to this instruction.
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| CN101242356B (en) * | 2007-12-06 | 2010-08-18 | 中兴通讯股份有限公司 | Realization method and IPTV system for memory database in IPTV system |
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| KR100568235B1 (en) * | 2003-11-20 | 2006-04-07 | 삼성전자주식회사 | Apparatus and method for requesting service provided by network device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242356B (en) * | 2007-12-06 | 2010-08-18 | 中兴通讯股份有限公司 | Realization method and IPTV system for memory database in IPTV system |
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| CN1375774A (en) | 2002-10-23 |
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