CN105373369A - Asynchronous caching method, server and system - Google Patents
Asynchronous caching method, server and system Download PDFInfo
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- CN105373369A CN105373369A CN201410422144.6A CN201410422144A CN105373369A CN 105373369 A CN105373369 A CN 105373369A CN 201410422144 A CN201410422144 A CN 201410422144A CN 105373369 A CN105373369 A CN 105373369A
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Abstract
The invention discloses an asynchronous caching method, server and system, and relates to the technical field of caching. According to the technical scheme provided by the invention, data requested by a user are read from the asynchronous caching server and a source server, and are returned to the user, asynchronous caching data is formed by setting logic expiration time for source data while a response to a user request is completed, and the asynchronous caching data are stored into the asynchronous caching server, so that the update of the asynchronous caching server is realized; and meanwhile, whether the asynchronous caching data expire or not is judged by taking the logic expiration time as a reference, the source data are read after the asynchronous caching data expire, and the update is performed again in the asynchronous caching server. Through the two-time update of the asynchronous caching data, it can be ensured that 80%-90% of user requests only need to access to the asynchronous caching server and do not need to read the source server. With the adoption of the technical scheme provided by embodiments of the invention, the availability and stability of a system can be remarkably improved.
Description
Technical field
The present invention relates to caching technology field, particularly relate to a kind of asynchronous buffer method, server and system.
Background technology
At present, utilize caching technology to carry out digital independent, be generally by the deposit data that gets from database in the buffer, and the expired physical time of buffer memory is set.When request arrives, if data in need in buffer memory, the data of return cache, if there is no data (not being cached data or data cached out of date) in buffer memory, then access originator database, as shown in Figure 1.
Due to the expired physical time of buffer memory arrange shorter, the cold data ratio then stored in buffer memory is easier to expired, and the data in buffer memory cross after date and access originator database, thus cause the situation of the invalid or poor efficiency of cold data buffer storage and operation that is a large amount of, high-frequency access originator database, and then to bring to source database and access pressure greatly, the request amount of digital independent is larger, the access pressure of database is larger, time serious, even can affect the normal access of source database, and then the normal use of influential system.In addition, if access originator database is made mistakes, when the response of secondary request will unsuccessfully report an error; Simultaneously until access originator database successfully could set up buffer memory again.
Therefore, adopt cache read of the prior art to fetch data, the availability of system and stability receive great impact.
Summary of the invention
The object of the present invention is to provide a kind of asynchronous buffer method, server and system, thus solve the foregoing problems existed in prior art.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of asynchronous buffer method, comprises the steps:
S1, the function of the request of asynchronous buffer server receives user and the access originator server as trust parameter;
S2, checks the asynchronous buffer data that whether there is the data consistent of asking with described user in described asynchronous buffer server, if there is no then performs step S3, if existed, performs step S7;
S3, as the function of the access originator server of trust parameter described in described asynchronous buffer server calls, obtains the source data consistent with the data that described user asks, and this source data is returned to user, perform step S4 simultaneously from described source server;
S4, for the described source data obtained in step S3 or step S6 adds logic expired time, forms asynchronous buffer data; By described asynchronous buffer data stored in described asynchronous buffer server, and the physics expired time of described asynchronous buffer data is set;
S5, whether logic is expired to verify described asynchronous buffer data, if non-logic is expired, then terminates; If logic is expired, then perform step S6;
S6, calls the function of the described access originator server as trust parameter, obtains the source data consistent with the data that described user asks, then perform step S4 from described source server;
S7, obtains described asynchronous buffer data, and these data is returned to user; Perform step S5-S6 simultaneously.
Particularly, in step S4, described logic expired time is set to 150-900 second.
Preferably, described logic expired time is set to 300 seconds.
Particularly, in step S4, described physics expired time is set to 1-7 days.
Preferably, described physics expired time is set to 2 days.
Further, in step S4, the described described source data for obtaining in step S3 or step S6 adds logic expired time, comprises, the described source data obtained in step S3 or step S6 is carried out serializing, and the Data Frontend after serializing adds logic expired time.
Further, in step S7, the described asynchronous buffer data of described acquisition, and these data are returned to user, comprise, the described logic expired time in described asynchronous buffer data is separated with described source data, and return to user after described source data unserializing is become object.
Further, in step S6, described in call the described function of access originator server as entrusting parameter, adopt distributed lock to control.
A kind of asynchronous buffer server, comprising:
Data receipt unit: for receiving the function of user's request and the access originator server as trust parameter;
Data processing unit: check the asynchronous buffer data that whether there is the data consistent of asking with described user in described asynchronous buffer server; Also for adding logic expired time for source data, and physics expired time is set for described asynchronous buffer data;
Data extracting unit: for calling the function of the described access originator server as trust parameter, obtain the source data consistent with the data that described user asks from described source server;
Data storage cell: for storing asynchronous buffer data;
Data outputting unit: for asynchronous buffer data and source data are returned to user.
A kind of asynchronous buffer system, comprising: user asks end for process, for sending the function of user's request and the access originator server as trust parameter, the source server of asynchronous buffer server according to claim 9 and providing source data.
The invention has the beneficial effects as follows:
Therefore, when read requests data, especially, when data request amount is larger, the access pressure of source server can be alleviated greatly, and then the load pressure of mitigation system, find in actual use, compared with prior art, adopting the technical scheme that the embodiment of the present invention provides, is less than 500 milliseconds to the response time of request, and adopt existing caching technology, be 4 seconds to the response time of request; In addition, the technical scheme that the embodiment of the present invention provides is adopted, when access originator Server Error, also can not affect when time response of request, only can affect data cached renewal, so, the technical scheme that theres is provided of the embodiment of the present invention is provided, can the significantly availability of elevator system and stability.
Accompanying drawing explanation
Fig. 1 is the caching method process flow diagram of prior art;
Fig. 2 is the asynchronous buffer method flow diagram that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.Should be appreciated that embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 2, the method for the asynchronous buffer that the embodiment of the present invention provides, comprises the steps:
S1, the function of the request of asynchronous buffer server receives user and the access originator server as trust parameter;
S2, checks the asynchronous buffer data that whether there is the data consistent of asking with described user in described asynchronous buffer server, if there is no then performs step S3, if existed, performs step S7;
S3, as the function of the access originator server of trust parameter described in described asynchronous buffer server calls, obtains the source data consistent with the data that described user asks, and this source data is returned to user, perform step S4 simultaneously from described source server;
S4, for the described source data obtained in step S3 or step S6 adds logic expired time, forms asynchronous buffer data; By described asynchronous buffer data stored in described asynchronous buffer server, and the physics expired time of described asynchronous buffer data is set;
S5, whether logic is expired to verify described asynchronous buffer data, if non-logic is expired, then terminates; If logic is expired, then perform step S6;
S6, calls the function of the described access originator server as trust parameter, obtains the source data consistent with the data that described user asks, then perform step S4 from described source server;
S7, obtains described asynchronous buffer data, and these data is returned to user; Perform step S5-S6 simultaneously.
As will be understood by the skilled person in the art, user's request can be user side access web site, after web server process user request, user's request is sent to asynchronous buffer server, wherein, web server using the function of access originator server as trust Parameter transfer to asynchronous buffer server.
When there are not the asynchronous buffer data of the data consistent of asking with described user in asynchronous buffer server, asynchronous buffer server can call this trust parameter, and access originator server obtains source data, and returns to user.In the embodiment of the present invention, while completing above-mentioned task, the source data of reading is carried out serializing, the Data Frontend after serializing adds logic expired time, forms asynchronous buffer data; By described asynchronous buffer data stored in described asynchronous buffer server, and the physics expired time of described asynchronous buffer data is set; Thus in asynchronous buffer server, realize the renewal of asynchronous buffer data.
When there are the asynchronous buffer data of the data consistent of asking with described user in asynchronous buffer server, then directly obtain data and return to user, in asynchronous buffer server, while completing the main thread of request response, asynchronous buffer server can start a new thread, and this thread is:
Whether logic is expired to verify the asynchronous buffer data upgraded in above-mentioned asynchronous buffer server, if non-logic is expired, then terminates; If logic is expired, then call the function of the described access originator server as trust parameter, the source data consistent with the data that described user asks is obtained from source server, after obtaining source data, again described source data is carried out serializing, Data Frontend after serializing adds logic expired time, forms asynchronous buffer data; By described asynchronous buffer data stored in described asynchronous buffer server, and the physics expired time of described asynchronous buffer data is set, in asynchronous buffer server, again completes the renewal of asynchronous buffer data.
In technique scheme, because asynchronous buffer data are in constantly renewal, therefore, when new request is arrived at, updated data can be supplied to user by system.
In the embodiment of the present invention, by the renewal of the asynchronous buffer data of above-mentioned twice, can ensure that user's request of 80%-90% only needs access asynchronous buffer server, and not need to read source server.Therefore, when read requests data, especially, when data request amount is larger, the access pressure of source server can be alleviated greatly, and then the load pressure of mitigation system, find in actual use, compared with prior art, adopting the technical scheme that the embodiment of the present invention provides, is less than 500 milliseconds to the response time of request, and adopt existing caching technology, be 4 seconds to the response time of request; In addition, the technical scheme that the embodiment of the present invention provides is adopted, when access originator Server Error, also can not affect when time response of request, only can affect data cached renewal, so, the technical scheme that theres is provided of the embodiment of the present invention is provided, can the significantly availability of elevator system and stability.
In embodiments of the present invention, described logic expired time is 18 byte expired time stamps.
Logic expired time generally can be arranged according to the needs of data cached renewal frequency.When data cached access frequency is higher, then renewal frequency can be lower, because access frequency is high, even if so renewal frequency is low, also can not affect access efficiency; On the contrary, when data cached access frequency is lower, then renewal frequency should be higher, because access frequency is low, if infrequently upgraded, namely renewal frequency is low, and the access efficiency of data can be lower; Therefore, for the data that access frequency is higher, its renewal frequency needed is lower, and the logic expired time of the setting of its correspondence can be shorter, and logic expired time is shorter, and the frequency of access originator server is more, upgrades faster; For the data that access frequency is lower, its renewal frequency needed is higher, and the logic expired time of the setting of its correspondence can be shorter.Based on this, in the embodiment of the present invention, logic expired time is set to 150-900 second, more than expired after 150-900 second.Preferably, logic expired time is set to 300 seconds, expired after more than 300 seconds, these settings can meet the renewal frequency needs of the data of 80-90%.
Because logic expired time is shorter, so can ensure that the renewal frequency of the data stored in asynchronous buffer server is many, renewal rate is than very fast.
In the embodiment of the present invention, physics expired time is set to 1-7 days.Preferably, physics expired time is set to 2 days, these settings can well balance the visitation frequency of cold data and the Space resources distribution of asynchronous buffer server.It is longer that physics expired time is arranged, better to the performance boost effect of the cold data of access.But physics expired time is longer, the space of the asynchronous buffer server taken is larger.Therefore, physics expired time can be arranged according to the actual conditions of the lower visitation frequency of cold data of visitation frequency and the resource distribution of asynchronous buffer server.
In the embodiment of the present invention, because physics expired time is long, generally, 80%-90% data cached all can not physics expired, so when each request reaches, generally only need reading cache data, and do not need access originator data.
In one embodiment of the invention, source data is carried out serializing, the Data Frontend after serializing adds logic expired time, forms asynchronous buffer data, and is stored in asynchronous buffer server.
When request arrives, access asynchronous buffer server, and when asynchronous buffer data are returned to user, logic expired time is separated with source data, and return to user after source data unserializing is become object.
Store after Data Serialization, after the data unserializing after serializing is become object, return to user, data can be facilitated to store and transmission.
In one embodiment of the invention, the mode adopting distributed lock to control, calls the function of the described access originator server as trust parameter, when ensureing that each logic of asynchronous buffer data of renewal is expired, Hui Yuan once, and then ensures that source server can not have excessive access pressure.
In one embodiment of the invention, provide a kind of asynchronous buffer server, comprising:
Data receipt unit: for receiving the function of user's request and the access originator server as trust parameter;
Data processing unit: check the asynchronous buffer data that whether there is the data consistent of asking with described user in described asynchronous buffer server; Also for adding logic expired time for source data, and physics expired time is set for described asynchronous buffer data;
Data extracting unit: for calling the function of the described access originator server as trust parameter, obtain the source data consistent with the data that described user asks from described source server;
Data storage cell: for storing asynchronous buffer data;
Data outputting unit: for asynchronous buffer data and source data are returned to user.
In one embodiment of the invention, provide a kind of asynchronous buffer system, comprise: for sending user's request and asking end for process, the asynchronous buffer server provided in above-described embodiment and the source server of providing source data as the user of the function of entrusting the access originator server of parameter.
By adopting technique scheme disclosed by the invention, obtain effect useful as follows:
In technical scheme of the present invention, the data of user's request are being read from asynchronous buffer server and source server, and returned to user, while response is completed to the request of user, by arranging logic expired time to source data, form asynchronous buffer data, and asynchronous buffer data are stored in asynchronous buffer server, thus realize the renewal of asynchronous buffer server; Meanwhile, judge that whether asynchronous buffer data are expired by logic expired time as benchmark, cross after date, then read source data, and again upgrade in asynchronous buffer server; By the renewal of the asynchronous buffer data of above-mentioned twice, can ensure that user's request of 80%-90% only needs access asynchronous buffer server, and not need to read source server.Therefore, when read requests data, especially, when data request amount is larger, the access pressure of source server can be alleviated greatly, and then the load pressure of mitigation system, find in actual use, compared with prior art, adopting the technical scheme that the embodiment of the present invention provides, is less than 500 milliseconds to the response time of request, and adopt existing caching technology, be 4 seconds to the response time of request; In addition, the technical scheme that the embodiment of the present invention provides is adopted, when access originator Server Error, also can not affect when time response of request, only can affect data cached renewal, so, the technical scheme that theres is provided of the embodiment of the present invention is provided, can the significantly availability of elevator system and stability.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Those skilled in the art it should be understood that the sequential of the method step that above-described embodiment provides can carry out accommodation according to actual conditions, also can carry out according to actual conditions are concurrent.
The hardware that all or part of step in the method that above-described embodiment relates to can carry out instruction relevant by program has come, described program can be stored in the storage medium that computer equipment can read, for performing all or part of step described in the various embodiments described above method.Described computer equipment, such as: personal computer, server, the network equipment, intelligent mobile terminal, intelligent home device, wearable intelligent equipment, vehicle intelligent equipment etc.; Described storage medium, such as: the storage of RAM, ROM, magnetic disc, tape, CD, flash memory, USB flash disk, portable hard drive, storage card, memory stick, the webserver, network cloud storage etc.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, commodity or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, commodity or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, commodity or the equipment comprising described key element and also there is other identical element.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should look protection scope of the present invention.
Claims (10)
1. an asynchronous buffer method, is characterized in that, comprises the steps:
S1, the function of the request of asynchronous buffer server receives user and the access originator server as trust parameter;
S2, checks the asynchronous buffer data that whether there is the data consistent of asking with described user in described asynchronous buffer server, if there is no then performs step S3, if existed, performs step S7;
S3, as the function of the access originator server of trust parameter described in described asynchronous buffer server calls, obtains the source data consistent with the data that described user asks, and this source data is returned to user, perform step S4 simultaneously from described source server;
S4, for the described source data obtained in step S3 or step S6 adds logic expired time, forms asynchronous buffer data; By described asynchronous buffer data stored in described asynchronous buffer server, and the physics expired time of described asynchronous buffer data is set;
S5, whether logic is expired to verify described asynchronous buffer data, if non-logic is expired, then terminates; If logic is expired, then perform step S6;
S6, calls the function of the described access originator server as trust parameter, obtains the source data consistent with the data that described user asks, then perform step S4 from described source server;
S7, obtains described asynchronous buffer data, and these data is returned to user; Perform step S5-S6 simultaneously.
2. method according to claim 1, is characterized in that, in step S4, described logic expired time is set to 150-900 second.
3. method according to claim 2, is characterized in that, described logic expired time is set to 300 seconds.
4. method according to claim 1, is characterized in that, in step S4, described physics expired time is set to 1-7 days.
5. method according to claim 4, is characterized in that, described physics expired time is set to 2 days.
6. method according to claim 1, it is characterized in that, in step S4, the described described source data for obtaining in step S3 or step S6 adds logic expired time, comprise, the described source data obtained in step S3 or step S6 is carried out serializing, and the Data Frontend after serializing adds logic expired time.
7. method according to claim 6, it is characterized in that, in step S7, the described asynchronous buffer data of described acquisition, and these data are returned to user, comprise, the described logic expired time in described asynchronous buffer data is separated with described source data, and return to user after described source data unserializing is become object.
8. method according to claim 1, is characterized in that, in step S6, described in call the described function of access originator server as entrusting parameter, adopt distributed lock to control.
9. an asynchronous buffer server, is characterized in that, comprising:
Data receipt unit: for receiving the function of user's request and the access originator server as trust parameter;
Data processing unit: check the asynchronous buffer data that whether there is the data consistent of asking with described user in described asynchronous buffer server; Also for adding logic expired time for source data, and physics expired time is set for described asynchronous buffer data;
Data extracting unit: for calling the function of the described access originator server as trust parameter, obtain the source data consistent with the data that described user asks from described source server;
Data storage cell: for storing asynchronous buffer data;
Data outputting unit: for asynchronous buffer data and source data are returned to user.
10. an asynchronous buffer system, is characterized in that, comprising: user asks end for process, for sending the function of user's request and the access originator server as trust parameter, the source server of asynchronous buffer server according to claim 9 and providing source data.
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