CN101126998A - Assembling type computer system high speed cache data backup processing method and system - Google Patents
Assembling type computer system high speed cache data backup processing method and system Download PDFInfo
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- CN101126998A CN101126998A CNA2006101157405A CN200610115740A CN101126998A CN 101126998 A CN101126998 A CN 101126998A CN A2006101157405 A CNA2006101157405 A CN A2006101157405A CN 200610115740 A CN200610115740 A CN 200610115740A CN 101126998 A CN101126998 A CN 101126998A
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Abstract
The utility model discloses a processing method and a system of an integrated-type computer system high-speed data backup cache. In the availability of the integrated network service system, the process can make an application in supplying a function on high-speed data back up cache for the service system. The process is characterized in that the backup server is utilized to store cache data in the server of the mainframe. Additionally, the data in the backup server can be synchronously altered and refreshed when the data item in the server of the mainframe is altered. The performance can keep the complete backup in the backup server in the case of data lost caused by the fault in the host.
Description
Technical field
The present invention relates to a kind of computing machine information technology, be particularly related to a kind of assembling type computer system (computer clustering system) high speed cache data backup processing method and system, it can be applicable to carry the computer system to an assembling type, for example be a high availability (HighAvailability, HA) assembling type network server system is in order to provide a high speed cache data backup processing capacity to each station server in this network server system.
Background technology
High availability is the design of enterprise-level network service system and the key element of a key in the construction, and its purpose is to guarantee that network service function keeps availability continuously, that is can not allow client have any moment can't link to server.
For high availability is provided, the solution that the enterprise-level network service system is adopted for example comprises and adopts a clustering mode to come for same service function multiple servers to be set, when also even having any station server to delay the machine situation, the server that can make another station server replace the machine situation of delaying comes interruptedly not provide required service function.This practice can allow enterprise network system keep its network data services function constantly, and can not interrupt service function to client because of any station server situation of breaking down wherein.
Yet in practical application, when having a server to delay the machine situation, cache memory wherein is usually still temporary to be had and had manyly upgraded but do not make the cached data of permanent storage as yet.The server of machine can change its service function of being responsible for originally carrying out into be transferred to other redundant server though therefore delay, and therefore these cached datas still can run off.
At present existing many feasible server cache data backup processing methods.Yet a common shortcoming of these existing methods is that it all can't come the backup cached data on the server of backup end is upgraded with the method for synchronization of instantaneity, therefore when the host side server is delayed the machine situation, still might cause the cached data of on backup end server, not doing to upgrade as yet therefore to run off.
Summary of the invention
The shortcoming of prior art in view of the above, fundamental purpose of the present invention is to be to provide a kind of assembling type computer system high speed cache data backup processing method and system, its can instantaneity the method for synchronization come the backup cached data on the server of backup end is upgraded, guarantee that therefrom the cached data in the host side server can not run off because of the situation of breaking down.
Assembling type computer system high speed cache data backup processing method of the present invention and system are that design is applied to carry the computer system to an assembling type, for example be the assembling type network server system of a high availability, in order to provide a high speed cache data backup processing capacity to each station server in this network server system.
Assembling type computer system high speed cache data backup processing method of the present invention comprises at least: (S1) on this first computer platform, monitor the cached state of the cache memory in this first computer platform; If monitoring any one cached data item changes, then send one and change the activation information of handling; (S2) on this first computer platform, respond this change and handle activation information and the cached data that changes is carried out high-speed cache change handling procedure, therefrom the cached data that changes is denoted as one and has upgraded but still updated state; And and then send a high-speed cache by this network connectivity and change synchronous processing activation information to this second computer platform; (S3) on this first computer platform, the cached data of this change is carried out a cache flush handling procedure, therefrom the cached data that changes is refreshed permanent data storage device to a host side; And and then send a cache flush synchronous processing activation information to this second computer platform by this network connectivity; (S4) on this second computer platform, the cached data on this first computer platform is stored a backup cached data; (S5) on this second computer platform, respond the high-speed cache that this first computer platform sends and change synchronous processing activation information and synchronously this backup cached data is carried out high-speed cache change handling procedure, therefrom the backup cached data of correspondence is denoted as one and has upgraded but still updated state; And (S6) on this second computer platform, respond the cache flush synchronous processing activation information sent on this first computer platform and synchronously to be denoted as upgrade but as yet not the backup cached data of Flushing status carry out a backup end cache flush handling procedure, the backup cached data that will change therefrom synchronously refreshes to one and backs up the permanent data storage device of holding.
On the entity framework, assembling type computer system high speed cache data backup disposal system of the present invention comprises 2 distributed unit at least:(A) host side unit; And (B) one the backup end unit; Wherein this host side unit carries to this first computer platform, and it comprises at least:(A1) host side cached state monitor module, and it can monitor the cached state of the cache memory in this first computer platform; If monitoring any one cached data item changes, then send one and change the activation information of handling; (A2) a host side high-speed cache changes processing module, it can respond change that this host side cached state monitor module sent and handle activation information and the cached data that changes is carried out a high-speed cache change handling procedure, therefrom the cached data that changes is denoted as one and has upgraded but still updated state; And and then send a high-speed cache by this network connectivity and change synchronous processing activation information to this second computer platform; And (A3) host side cache flush processing module, it can carry out a cache flush handling procedure to the cached data of this change, therefrom the cached data that changes is refreshed the permanent data storage device to a host side; And and then send a cache flush synchronous processing activation information to this second computer platform by this network connectivity; And wherein should carry to this second computer platform by the backup end unit, and it comprises at least:(B1) backup cached data storage module, it is in order to store a backup of the cached data in this first computer platform; ( B2 ) a backup end high-speed cache changes processing module； it can respond host side high-speed cache in the host side unit that is carried on this first computer platform and change the high-speed cache that processing module sends and change synchronous processing activation information and synchronously the backup cached data of being kept in this backup cached data storage module is carried out high-speed cache change handling procedure, therefrom the backup cached data of correspondence is denoted as one and has upgraded but still updated state; And (B3) backup end cache flush processing module; It can respond that cache flush that the host side cache flush processing module in the host side unit that carries on this first computer platform sends is processed activation information synchronously and synchronously in this backup cached data storage module by this backup end high-speed cache change processing module be denoted as upgrade but not yet the backup cached data of Flushing status carry out a backup end cache flush handling procedure, the backup cached data that will change therefrom refreshes to one and backs up the permanent data storage device of holding.
The characteristics of assembling type computer system high speed cache data backup processing method of the present invention and system are to utilize backup end server to store cached data in the host side server, and when any one the cached data item whenever the host side server is changed, promptly change synchronously and refresh the backup cached data that is stored in the backup end server.When these characteristics can allow the host side server cause its cached data all to run off in the situation of breaking down, can still on backup end server, possess complete backup.
Description of drawings
Fig. 1 is an application synoptic diagram, carries the application mode to an assembling type network server system in order to show assembling type computer system high speed cache data backup disposal system of the present invention;
Fig. 2 is a configuration diagram, in order to the basic framework of the OO component models that shows assembling type computer system high speed cache data backup disposal system of the present invention;
Fig. 3 is a configuration diagram, in order to show an embodiment of the cached state record sheet that assembling type computer system high speed cache data backup disposal system of the present invention is adopted.
The main element symbol description
10 first computer platforms (first server)
11 cache memories
12 permanent data storage devices (hard disk unit)
20 second computer platforms (second server)
22 permanent data storage devices (hard disk unit)
30 network connectivities
40 assembling type computer system data backup disposal systems of the present invention
100 host side unit
110 host side cached state monitor modules
111 host side cached state record sheets
120 host side high-speed caches change processing module
130 host side cache flush processing modules
200 backup end units
210 backup cached data storage modules
211 backup end cached state record sheets
220 backup end high-speed caches change processing module
230 backup end cache flush processing modules
Embodiment
Following conjunction with figs. describes the embodiment of assembling type computer system high speed cache data backup processing method of the present invention and system in detail.
Fig. 1 shows the application mode and the distributed system architecture thereof of assembling type computer system high speed cache data backup disposal system of the present invention (as the part that frame of broken lines comprised of mark 40 indications).As shown in the figure, high speed cache data backup disposal system 40 of the present invention is in being and to carry respectively to one first computer platform 10 and one second computer platform 20 (in embodiment shown in Figure 1, two station servers in the assembling type network server system that these two computer platforms 10,20 for example are a high availability) with dispersing mode (that is being divided into a host side unit 100 and a backup end unit 200) in the practical application.When practical application, this first server 10 utilizes a cache memory 11 to store cached data.
When practical operation, high speed cache data backup disposal system 40 of the present invention can provide a high speed cache data backup processing capacity to the first above-mentioned server 10, therefrom the cached data of being kept in its cache memory 11 is continued to back up to second server 20 with the method for synchronization of an instantaneity, when making the server 10 of winning that unpredictable abnormal operation situation take place, when for example delaying machine or power breakdown, can make this first server 10 from second server 20, fetch original cached data.
In embodiment shown in Figure 1, high speed cache data backup disposal system 40 of the present invention in order to the high speed cache data backup in first server 10 to second server 20; But in practical application, also can be with seasonal second server 20 with its high speed cache data backup to the first server 10.
As shown in Figure 2, high speed cache data backup disposal system 40 of the present invention comprises 2 distributed unit at least: (A) host side unit 100; And (B) one the backup end unit 200; Wherein this host side unit 100 carries to first server 10, and its inside structure comprises at least: (A1) host side cached state monitor module 110; (A2) a host side high-speed cache changes processing module 120; And (A3) host side cache flush processing module 130; This backup end unit 200 then carries to second server 20, and its inside structure comprises at least: (B1) a backup end high-speed cache changes processing module 220; And (B2) backup end cache flush processing module 230.The individual attribute and the function of these modules below are described at first respectively.
Host side cached state monitor module 110 is provided with as shown in Figure 3 a host side cached state record sheet 111, for example be normally used seldom used data item inventory (the LRU List of general cache technology, LRU=Least Recently Used wherein), wherein record the association attributes of these cache memory 11 present all cached data items of keeping in, for example change state of each cached data item (dirty status) and Flushing status (update status); Wherein if the change state be " very " (TRUE), then representing cached data item under it to be updated but do not refresh a permanent data storage device 12 under this first server 10 as yet, for example is a hard disk unit or a flash memory module (following is example with the hard disk unit); And if Flushing status be " very " (TRUE), then represent its affiliated cached data item to be refreshed to the affiliated hard disk unit 12 of this first server 10.What must note a bit is that cached state record sheet 111 shown in Figure 3 only shows the record data relevant with the present invention herein; In concrete enforcement, the LRU record sheet still comprises many other record data usually, for example the storage address of each cached data item, take number of times or the like.When practical operation, the cached state of the cache memory 11 in host side cached state monitor module 110 sustainable supervision first servers 10; If monitoring any one cached data item changes, then send one and change processing activation information to host side high-speed cache change processing module 120.In embodiment shown in Figure 3, the data content of supposing cached data item Cache_Data (3) is changed, and then host side cached state monitor module 110 promptly can responsively send a change and handle activation information to host side high-speed cache change processing module 120.
The host side high-speed cache changes processing module 120 and can respond change that above-mentioned host side cached state monitor module 110 sent and handle activation information and the cached data that changes is carried out a high-speed cache change handling procedure, and the cached data that will change is denoted as one and has upgraded but Flushing status (dirty status) not as yet therefrom; And and then send a high-speed cache by this network connectivity 30 and change synchronous processing activation information to second server 20.In embodiment shown in Figure 3, suppose that the data content of cached data item Cache_Data (3) is changed, then host side high-speed cache change processing module 120 promptly can be set at " very " (TRUE) with Cache_Data (3) " DirtyStatus ".
Host side cache flush processing module 130 can to above-mentioned host side high-speed cache change processing module 120 be denoted as upgrade but as yet not the cached data of Flushing status carry out a cache flush handling procedure, the cached data item that therefrom each was changed refreshes to the affiliated hard disk unit 12 of first server 10; And and then send a cache flush synchronous processing activation information to this second server 20 by this network connectivity 30.In embodiment shown in Figure 3, the data content of supposing cached data item Cache_Data (3) is changed, then host side cache flush processing module 130 promptly can be returned the data content of Cache_Data (3) and be deposited to hard disk unit 12, and after finishing its " Update Status " is set at " very " (TRUE).
Backup cached data storage module 210 for example is one to be installed on the flash memory on this second server 20, in order to a backup of the cached data of being kept in the cache memory 11 that stores this first server 10.This backup cached data storage module 210 is provided with as shown in Figure 3 a cached state record sheet 211, for example be the normally used seldom used data item inventory of general cache technology (LRU List), wherein record the association attributes of these backup cached data storage module 210 present all backup cached data items of keeping in, for example the change state and the Flushing status of each backup cached data item; Wherein if the change state be " very " (TRUE), then representing backup cached data item under it to be updated but do not refresh a permanent data storage device 22 under this second server 20 as yet, for example is a hard disk unit or a flash memory module (following is example with the hard disk unit); And if Flushing status be " very " (TRUE), then represent its affiliated backup cached data item to be refreshed to the affiliated hard disk unit 22 of this second server 20.
Backup end high-speed cache changes that processing module 220 can respond that host side high-speed cache in the host side unit 100 that is carried on this first server 10 changes that high-speed cache that processing module 120 comes by 30 synchronous drivings of this network connectivity changes synchronous processing activation information and the backup cached data of correspondence stored in the above-mentioned backup cached data storage module 210 is carried out an identical high-speed cache change handling procedure, therefrom the backup cached data of correspondence is denoted as one and has upgraded but still updated state.When practical operation, when this backup end high-speed cache change processing module 220 received high-speed cache change synchronous processing activation information, it can carry out following processing action:
(S1) search this cached state record sheet 211 check on first server 10 the cached data item that changed whether the backup of an existing correspondence be stored among this backup cached data storage module 210; If then carry out following step (S2); Otherwise if not, then carry out following step (S3);
(S2) upgrade corresponding backup cached data item;
(S3) in this cached state record sheet 211, a newly-increased backup cached data item, and in this backup cached data storage module 210, distribute a storage area to store the backup of the cached data of this change.
In embodiment shown in Figure 3, suppose that the data content of the cached data item Cache_Data (3) in first server 10 is changed.In in the case, if Cache_Data (3) is a newly-increased cached data item, then backup end high-speed cache changes processing module 220 meetings at first in cached state record sheet 211, be the newly-increased record hurdle of Cache_Data (3), and in this backup cached data storage module 210, distribute a storage area to store the backup of Cache_Data (3); Otherwise if the existing record of Cache_Data (3), then backup end high-speed cache change processing module 220 is set at " very " (TRUE) with its Backup Data Cache_Data (3) " Dirty_Status ".
Backup end cache flush processing module 230 can respond that host side cache flush processing module 130 in the host side unit 100 that carries on this first server 10 is processed activation information synchronously by 30 cache flush of sending synchronously of this network connectivity and on this second server 20 by this backup end high-speed cache change processing module 220 be denoted as upgrade but not yet the backup cached data item of Flushing status carry out a backup end cache flush handling procedure, the backup cached data that will change therefrom refreshes to the affiliated hard disk unit 22 of this second server 20. In embodiment shown in Figure 3, the data content of supposing cached data item Cache_Data (3) is changed, then backup end cache flush processing module 230 promptly can be temporary in it backup in backup cached data storage module 210 and refreshes hard disk unit 22 under the second server 20, and after finishing its " Update Status " is set at " very " is (TRUE).
Below promptly utilize an application example that the integrated operation mode of high speed cache data backup disposal system 40 of the present invention when practical application is described.In this application example, suppose first server 10 store N cached data item Cache_Data (1), Cache_Data (2), Cache_Data (3) ..., Cache_Data (N), wherein the data content of Cache_Data (3) is changed.
Under above-mentioned situation, host side cached state monitor module 110 can monitor this change situation and send one and change processing activation information to host side high-speed cache change processing module 120, make it responsively the cached data item Cache_Data (3) that changes be carried out a high-speed cache and change handling procedure, " the Dirty Status " with Cache_Data (3) is set at " very " (TRUE) therefrom; And and then send a high-speed cache by this network connectivity 30 and change synchronous processing activation information to second server 20, " Dirty Status " that order backup end high-speed cache changes synchronously that it is the corresponding Backup Data Cache_Data (3) of processing module 220 also is set at " very " (TRUE).But if Cache_Data (3) is a newly-increased cached data item, then backup end high-speed cache changes processing module 220 meetings at first in LRU cached state record sheet 211, be the newly-increased record hurdle of Cache_Data (3), and in this backup cached data storage module 210, distribute a storage area to store the backup of Cache_Data (3).
Then being responsible for " Dirty Status " by host side cache flush processing module 130 is that " very " cached data item Cache_Data (3) (TRUE) carries out a cache flush handling procedure, the data content that Cache_Data (3) was changed refreshes the hard disk unit 12 under first server 10 therefrom, and after finishing its " Update Status " is set at " very " (TRUE); And send a cache flush synchronous processing activation information to this second server 20 by this network connectivity 30 simultaneously in this, order backup end cache flush processing module 230 is synchronously with the content refresh of the backup cached data Cache_Data (3) of its correspondence hard disk unit 22 under the second server 20, and after finishing its " Update Status " is set at " very " (TRUE).
When first server 10 breaks down situation and causes cached data in its cache memory 11 all to run off, because the cached data of its loss has been possessed complete backup on second server 20, therefore when first server 10 was replied normal operation, it can fetch all original cached datas from second server 20.
Generally speaking, the invention provides a kind of assembling type computer system high speed cache data backup processing method and system, it can be applicable to carry the assembling type network server system to a high availability, in order to a high speed cache data backup processing capacity to be provided; And its characteristics are to utilize backup end server to store cached data in the host side server, and when any one the cached data item whenever the host side server is changed, promptly change synchronously and refresh the backup cached data that is stored in the backup end server.When these characteristics can allow the host side server cause its cached data all to run off in the situation of breaking down, can still on backup end server, possess complete backup.Therefore the present invention has better progressive and practicality than background technology.
The above is the preferred embodiments of the present invention only, is not in order to limit the scope of essence technology contents of the present invention.Essence technology contents of the present invention broadly is defined in the claim of enclosing.If any technology entity that other people are finished or method and the claim of enclosing are defined identical or be a kind of change of equivalence, all will be regarded as being covered by among the claim of the present invention.
Claims (12)
1. assembling type computer system high speed cache data backup processing method, it can be applicable to one first computer platform and one second computer platform, wherein this first computer platform and this second computer platform can pass data mutually by a network connectivity, and this first computer platform disposes a cache memory, in order to provide a high speed cache data backup processing capacity to this first computer platform;
This assembling type computer system high speed cache data backup processing method comprises at least:
On this first computer platform, monitor the cached state of the cache memory in this first computer platform; If monitoring any one cached data item changes, then send one and change the activation information of handling;
On this first computer platform, respond this change and handle activation information and the cached data that changes is carried out high-speed cache change handling procedure, therefrom the cached data that changes is denoted as one and has upgraded but still updated state; And and then send a high-speed cache by this network connectivity and change synchronous processing activation information to this second computer platform;
On this first computer platform, the cached data of this change is carried out a cache flush handling procedure, therefrom the cached data that changes is refreshed permanent data storage device to a host side; And and then send a cache flush synchronous processing activation information to this second computer platform by this network connectivity;
On this second computer platform, the cached data on this first computer platform is stored a backup cached data;
On this second computer platform, respond the high-speed cache that this first computer platform sends and change synchronous processing activation information and synchronously this backup cached data is carried out high-speed cache change handling procedure, therefrom the backup cached data of correspondence is denoted as one and has upgraded but still updated state; And
On this second computer platform, respond the cache flush synchronous processing activation information sent on this first computer platform and synchronously to be denoted as upgrade but as yet not the backup cached data of Flushing status carry out a backup end cache flush handling procedure, the backup cached data that will change therefrom synchronously refreshes to one and backs up the permanent data storage device of holding.
2. assembling type computer system high speed cache data backup processing method according to claim 1, wherein this first computer platform and this second computer platform are a webserver respectively.
3. assembling type computer system high speed cache data backup processing method according to claim 1, wherein the permanent data storage device of this host side is a hard disk unit.
4. assembling type computer system high speed cache data backup processing method according to claim 1, wherein the permanent data storage device of this host side is a flash memory module.
5. assembling type computer system high speed cache data backup processing method according to claim 1, wherein the permanent data storage device of this backup end is a hard disk unit.
6. assembling type computer system high speed cache data backup processing method according to claim 1, wherein the permanent data storage device of this backup end is a flash memory module.
7. assembling type computer system high speed cache data backup disposal system, it can carry to one first computer platform and one second computer platform, wherein this first computer platform and this second computer platform can pass data mutually by a network connectivity, and this first computer platform disposes a cache memory, in order to provide a high speed cache data backup processing capacity to this first computer platform;
This assembling type computer system high speed cache data backup disposal system comprises at least: a host side unit and a backup end unit;
Wherein
This host side unit carries to this first computer platform, and it comprises at least:
One host side cached state monitor module, it can monitor the cached state of the cache memory in this first computer platform; If monitoring any one cached data item changes, then send one and change the activation information of handling;
One host side high-speed cache changes processing module, it can respond change that this host side cached state monitor module sent and handle activation information and the cached data that changes is carried out a high-speed cache change handling procedure, therefrom the cached data that changes is denoted as one and has upgraded but still updated state; And and then send one innings of fast buffer memory by this network connectivity and change synchronous processing activation information to this second computer platform; And
One host side cache flush processing module, it can carry out a cache flush handling procedure to the cached data of this change, therefrom the cached data that changes is refreshed the permanent data storage device to a host side; And and then send a cache flush synchronous processing activation information to this second computer platform by this network connectivity;
And wherein
This backup end unit carries to this second computer platform, and it comprises at least:
One backup cached data storage module, it is in order to store a backup of the cached data in this first computer platform;
One backup end high-speed cache changes processing module, it can respond host side high-speed cache in the host side unit that is carried on this first computer platform and change the high-speed cache that processing module sends and change synchronous processing activation information and synchronously the backup cached data of being kept in this backup cached data storage module is carried out high-speed cache change handling procedure, therefrom the backup cached data of correspondence is denoted as one and has upgraded but still updated state; And
One backup end cache flush processing module, its can respond cache flush synchronous processing activation information that the host side cache flush processing module in the host side unit that is carried on this first computer platform sent and synchronously in this backup cached data storage module by this backup end high-speed cache change processing module be denoted as upgrade but as yet not the backup cached data of Flushing status carry out a backup end cache flush handling procedure, the backup cached data that will change therefrom refreshes to one and backs up the permanent data storage device of holding.
8. assembling type computer system high speed cache data backup disposal system according to claim 7, wherein this first computer platform and this second computer platform are a webserver respectively.
9. assembling type computer system high speed cache data backup disposal system according to claim 7, wherein the permanent data storage device of this host side is a hard disk unit.
10. assembling type computer system high speed cache data backup disposal system according to claim 7, wherein the permanent data storage device of this host side is a flash memory module.
11. assembling type computer system high speed cache data backup disposal system according to claim 7, wherein the permanent data storage device of this backup end is a hard disk unit.
12. assembling type computer system high speed cache data backup disposal system according to claim 7, wherein the permanent data storage device of this backup end is a flash memory module.
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| CNB2006101157405A CN100485629C (en) | 2006-08-15 | 2006-08-15 | Assembling type computer system high speed cache data backup processing method and system |
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| CN101887399A (en) * | 2010-06-28 | 2010-11-17 | 北京用友政务软件有限公司 | Method for accessibly accessing cache data at server side |
| CN103649901A (en) * | 2013-07-26 | 2014-03-19 | 华为技术有限公司 | Data transmission method, data receiving method and sotring equipment |
| CN104954444A (en) * | 2015-05-27 | 2015-09-30 | 华为技术有限公司 | Cached data migration method and device |
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| CN101887399A (en) * | 2010-06-28 | 2010-11-17 | 北京用友政务软件有限公司 | Method for accessibly accessing cache data at server side |
| CN103649901A (en) * | 2013-07-26 | 2014-03-19 | 华为技术有限公司 | Data transmission method, data receiving method and sotring equipment |
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| CN105099793B (en) * | 2015-09-24 | 2019-02-05 | 华为技术有限公司 | Hot spare method, apparatus and system |
| US11416359B2 (en) | 2015-09-24 | 2022-08-16 | Huawei Technologies Co., Ltd. | Hot standby method, apparatus, and system |
| US11734138B2 (en) | 2015-09-24 | 2023-08-22 | Huawei Technologies Co., Ltd. | Hot standby method, apparatus, and system |
| CN105718330A (en) * | 2016-01-15 | 2016-06-29 | 浪潮(北京)电子信息产业有限公司 | Linux system backup data recovery method and device |
| CN110941568A (en) * | 2019-10-23 | 2020-03-31 | 支付宝(杭州)信息技术有限公司 | Cache updating method, device, system, electronic equipment and medium |
| CN110941568B (en) * | 2019-10-23 | 2022-03-01 | 支付宝(杭州)信息技术有限公司 | Cache updating method, device, system, electronic equipment and medium |
| CN113392152A (en) * | 2020-03-11 | 2021-09-14 | 伊姆西Ip控股有限责任公司 | Method, electronic device and computer program product for updating information |
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