CN105701233A - Method for optimizing server cache management - Google Patents
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- CN105701233A CN105701233A CN201610092105.3A CN201610092105A CN105701233A CN 105701233 A CN105701233 A CN 105701233A CN 201610092105 A CN201610092105 A CN 201610092105A CN 105701233 A CN105701233 A CN 105701233A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2455—Query execution
- G06F16/24552—Database cache management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/957—Browsing optimisation, e.g. caching or content distillation
- G06F16/9574—Browsing optimisation, e.g. caching or content distillation of access to content, e.g. by caching
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Abstract
Provided is a method for optimizing server cache management. By modifying a cache module in a web reverse proxy server and a storage structure of a cache, a hierarchical two-level cache structure of the web reverse proxy server is established, and a cache failure mode matched with the hierarchical two-level cache storage structure is configured; by modifying a management module of the cache of the web reverse proxy server, a cache failure mode of the web reverse proxy server is adapted to the modified two-level cache storage structure so that the web reverse proxy server can support both cache deletion mechanisms based on webpage URLs and cache deletion mechanisms based on website domain names; the two-level storage structure of the web reverse proxy server is configured, storage paths are set for website cache data under all website domain names, and the formats of the storage paths are /opt/cache/website domain name and /opt/cache/website domain name/URL identifier.
Description
Technical field
The invention belongs to field of data storage, be specifically related to a kind of method optimizing server buffer management。
Background technology
Along with present ecommerce internet development, bulk information data are by transmission on Internet to the world from all directions, in addition people are also increasing to the demand of quantity of information, and how utilizing the Internet that information data is supplied to user faster and more accurately becomes the key of enterprise development。
WEB buffer memory is a kind of HTTP application acceleration technology, http proxy server can the content of buffer memory store client access, when user thinks the URL (UniformResourceLocator of one website of access, URL), this access request is when web Reverse Proxy processes, web Reverse Proxy can check the data content whether existed in own cache corresponding to this URL, if it does, directly reading out this data content from buffer memory returns to user；If there is no, then initiate request to the application server of web Reverse Proxy rear end, after application server receives request, content can be returned to web Reverse Proxy, web Reverse Proxy by data content delivery to, in the process of user, also data content being stored in the buffer memory of self。When user visits again same URL next time, web Reverse Proxy directly takes out content from buffer memory and returns to user。This mechanism improves the efficiency of transmission of web site contents to a great extent。But owing to the data of website ceaselessly change, it would be desirable to remove corresponding cache contents in web Reverse Proxy in time when website data changes, it is ensured that the timely replacement of cache contents。Current web Reverse Proxy provides following buffer memory purge mechanism three kinds conventional:
(1) removing buffer memory according to url, namely by the mode of order or http request, notice web Reverse Proxy removes the buffer memory of which url。Such as, if to remove the buffer memory of www.a.jpgurl, this url buffer memory on web Reverse Proxy just can be removed by browser access www.a.jpg/purge；
(2) that deletes in the reverse server of web is whole data cached, namely removes the CACHE DIRECTORY of web Reverse Proxy；
(3) artificially arranging data cached expired time, when arriving expired time, the data cached of web Reverse Proxy ceases to be in force automatically and removes；
Although visible three kinds of buffering manner of cleaning up can play removes data cached effect, but all there is certain defect, method one is limited to deletes only in url, cause when removing all url-caches under a domain name, need to perform a large amount of command instruction, deletion action efficiency is low, reduces the performance of cache management；The second is by whole data cached deletions, when client sends request of data to web Reverse Proxy, those data not updated need again to obtain from server across wide area network (WAN, WideAreaNetwork) because being deleted, and greatly reduce page access speed；The third method can only wait that buffer memory ceases to be in force automatically, and data age is poor；
In the research process to web Reverse Proxy it have also been found that, buffer memory structure excessively unification based on web Reverse Proxy, it it is all the division carrying out memory area according to URL, and each URL occupies specific memory area, causing that the mode removing buffer memory is comparatively single, the first removes buffer memory according to URL；Its two be rely on buffer memory the mechanism that ceases to be in force automatically。
Under such technical background, in order to promote the performance of website, improving the response speed of website, the application establishes the cache optimization mechanism of a set of website data。
Summary of the invention
For solving the problems referred to above, the object of the invention is to provide a kind of method optimizing server buffer management, removes corresponding cache contents in web Reverse Proxy in time when website data changes, it is ensured that the timely replacement of cache contents；In order to improve the cache management mode of existing web Reverse Proxy, contribute to promoting web site performance, improve the response speed of website, to provide the user accurately data transport service efficiently again。
Technical solution of the present invention is as follows: a kind of method optimizing server buffer management, it is characterized in that, it is modified the storage organization of the cache module in web Reverse Proxy and buffer memory, build the L2 cache structure of web Reverse Proxy layering, and configure and include the cache invalidation mode that the L2 cache storage organization of layering matches, it is ensured that removing in time and renewal of timeliness data；Specifically comprise the following steps that
Step 1: considering that web Reverse Proxy can act on behalf of the request of data of multiple website, the storage organization of web Reverse Proxy is revised as being stored separately according to website domain name, different website domain names occupies different memory areas；
Step 2: build the L2 cache structure of web Reverse Proxy layering, one website domain contains multiple webpage url under one's name, thus on the storage organization based on website domain name buffer memory, refining to be divided into by the storage organization of web Reverse Proxy again and be stored separately according to webpage url, different webpage url occupies different memory areas；
Step 3: the management module of amendment web reverse-proxy caching: the cache invalidation mode carried by web Reverse Proxy and the L2 cache storage organization after amendment carry out adaptation, make web Reverse Proxy both support the buffer memory deleting mechanism based on webpage URL, the buffer memory deleting mechanism based on website domain name can be supported again；
Step 4: the L2 cache structure for web Reverse Proxy configures, and arranges store path for each website domain Web caching data under one's name, store path form is /opt/cache/ website domain name ,/opt/cache/ website domain/URL indicate。
Further, the cache invalidation mode of web Reverse Proxy is based upon based on the buffer memory structure of webpage URL, owing to web Reverse Proxy storage organization is revised as secondary storage structure by original one-level storage organization, correspondingly, the cache invalidation mode that web Reverse Proxy carries is revised as the pattern matched with secondary storage structure；
The data content of website domain name is under the jurisdiction of level cache structure, as this data content lost efficacy, empties one-level storage organization corresponding to website domain name and all secondary storage structures included thereof；
The data content of webpage URL is under the jurisdiction of L2 cache structure, as this data content lost efficacy, empties secondary storage structure corresponding for webpage URL。
Further, after web Reverse Proxy startup work, when need to update under whole domain name data cached time, by sending the instruction of " removing buffer memory " to web Reverse Proxy, this instruction indicate the data of pre-deletion be domain name rank or URL level other；
If the data of domain name rank, then the order of " removing buffer memory " can empty all data in this domain name memory block, website；
If the other data of URL level, then the order of " removing buffer memory " only can remove the data in single webpage URL memory block, without affecting the data content of other URL in its affiliated web site domain name memory block。
Further, after the cache contents of a webpage URL exceedes effect duration, web Reverse Proxy can first find the memory block that domain name belonging to this webpage URL occupies, and then finds the memory block of this webpage URL in the memory block of this domain name, and deletes cache contents；When webpage URL cache contents all in a domain name district exceed effect duration, web Reverse Proxy directly empties the memory block of this domain name。
Further, " removing buffer memory " instruction can pass through the realizations such as shell script, python language, perl language。
The present invention compared with prior art, its beneficial effect:
(1) present invention is by designing two-level memory structure, it is possible to realizes on-demand batch and deletes, delete one by one without the mode again through order, improves the efficiency that buffer memory is removed, and effectively solves the problem that deletion efficiency existing in prior art is low；
(2) from the angle of cache management, the present invention has refined buffer memory structure, makes the web reverse proxy service can not only according to domain name supervising data, moreover it is possible to manage data according to URL, including the interpolation of data, maintenance and deletion, increase data cached renewal and the convenience of data cached management；
(3) present invention provides the matching mechanisms that buffer memory ceases to be in force automatically mode and buffer memory structure, it is provided that the dual buffered data based on URL with based on website domain name deletes mode, optimizes data cached management。
Accompanying drawing explanation
Fig. 1 is the buffer memory structural representation of web Reverse Proxy in the embodiment of the present invention；
The workflow diagram of the cache management of web Reverse Proxy in Fig. 2 embodiment of the present invention；
Fig. 3 is the data cached interpolation flow chart of web Reverse Proxy in the embodiment of the present invention；
Fig. 4 is the data cached deletion flow chart of web Reverse Proxy in the embodiment of the present invention。
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearly, describe the present invention below in conjunction with the drawings and specific embodiments。
Fig. 1 is the buffer memory structural representation of web Reverse Proxy in the embodiment of the present invention。The buffer memory structure of web Reverse Proxy implements Bedding storage, buffer memory structure is first according to website domain name www.a.com, www.b.com, www.c.com marks off three different memory areas, the data cached of each website domain name occupies a memory area, then domain name buffer zone is subdivided into different storage zone according to the URL of this website again, above three website domain name all comprises two URL respectively, the URL that www.a.com comprises is followed successively by www.a.com/a.com and www.a.com/b.com, the URL number that domain name buffer zone is contained according to domain name, corresponding memory area is divided for each URL；After web Reverse Proxy receives the response of application server, response contents can be write in the file under respective directories according to the domain name of current request；
By the way, storage organization is divided into secondary storage structure, is conducive to more quickly locating data cached file；
Further, multiple URL is included in one website, different content of pages corresponding for URL are stored in different regions, the size of each buffer zone corresponding realizes by arranging at configuration file, when the utilization rate of memory area is close to 100%, the cache contents that visit capacity is on the low side, according to the access times of cache contents and time, is rejected in buffer zone。
Fig. 2 is the workflow diagram of the cache management of web Reverse Proxy in the embodiment of the present invention, and the method specifically includes:
Buffer memory structure is first according to website domain name and is divided into different memory areas by step 201:web Reverse Proxy, then again by this memory area according to this website domain under one's name URL refinement be divided into different memory areas；
Step 202: the management module of amendment web reverse-proxy caching, particularly as follows: the cache invalidation mode that web Reverse Proxy is carried and amendment after buffer memory structure carry out adaptation, make web Reverse Proxy both support the buffer memory deleting mechanism based on URL, the buffer memory deleting mechanism based on website domain name can be supported again；
Step 203: for the secondary storage structure allocating cache of web Reverse Proxy, and store path is set for each website domain Web caching data under one's name；According to the above embodiments, Reverse Proxy to be www.a.com, www.b.com, tri-websites of www.c.com provide buffer service, when for three website allocating caches, the content of above-mentioned website can be sequentially placed into under/opt/cache/www.a.com/ ,/opt/cache/www.b.com/ and/opt/cache/www.c.com/。
Step 204: compile the web Reverse Proxy of modified mistake, starts web Reverse Proxy；
Step 205: client sends request of data to application server, through web Reverse Proxy processes time, web Reverse Proxy extracts website domain name from request of data, find the memory area that this domain name is corresponding, from request of data, extract URL address simultaneously, and according to the data storage territory that this URL looks for this URL in the memory area navigated to, if not finding data cached in the buffer memory structure of web Reverse Proxy, go to step 206；Otherwise go to step 207；
The request of data of client is sent to application server by step 206:web Reverse Proxy, and the data of request response, after service logic calculates, are transmitted back to web Reverse Proxy by application server；
Step 207:Web Reverse Proxy, according to the website domain name of current request and URL address, positions the buffer zone that this request content is corresponding, is read out by cache contents simultaneously, sends to client；
Fig. 3 is the data cached interpolation flow chart of web Reverse Proxy in the embodiment of the present invention, when needing to update data in the data buffer area of web Reverse Proxy, needing to be loaded into the data in application server the data buffer area of web Reverse Proxy, detailed process is:
Step 301: when there being new data to be loaded in web Reverse Proxy, one is according to data type, it is judged that the rank of data storage area；Its two be differentiate store these data domain name catalogue whether exist；
If data storage area rank is one-level, and domain name catalogue exists, and removes the content of domain name catalogue, new data is updated in domain name catalogue；
If data storage area rank is one-level, and domain name catalogue is absent from, and step proceeds to step 302；
If data storage area rank is two grades, and domain name catalogue is absent from, and step proceeds to 302；
If storage data level is not two grades, and domain name catalogue exists, and step proceeds to 303；
Step 302: a newly-built domain name catalogue, using domain name belonging to data as directory name, creates the buffer structure of first level；
Step 303: enter in domain name catalogue, creates one for the path and the file that identify URL, namely creates the storage organization of the second level, and be written in file by cache contents；
Fig. 4 is the data cached deletion flow chart of web Reverse Proxy in the embodiment of the present invention, when webmaster needs to remove Web caching because updating website data, can by sending the commands to realize to web Reverse Proxy, and detailed process includes:
Step 401: webmaster sends the instruction of " removing buffer memory " to web Reverse Proxy, has clearly stated the type of pre cleaning data in instruction, the type of data indicate data be domain name rank or URL level other；
Step 402: when web Reverse Proxy receives the instruction of " removing buffer memory ", it is judged that the pre-data type deleted, if data are when to be URL data cached, operation proceeds to step 403；If data are domain name rank data cached, operation proceeds to step 404；
Step 403: according to URL address, find cache storage area corresponding in web Reverse Proxy for this URL, and by the data deletion of this buffer zone；Such as, the pre-buffer memory deleting www.abc.com/a.jpg now, by browser access www.abc.com/purge/a.jpg；
Step 404: find the cache storage area of correspondence according to domain name, contains corresponding data cached of this website domain all URL under one's name in this cache storage area；Such as, the pre-all buffer memorys deleted under www.abc.com domain name, can adopt the mode of shell script directly to remove the cache contents of website domain name buffer area, i.e. rm rf/opt/www.abc.com/ now。
Those of ordinary skill in the field are it is understood that the foregoing is only specific embodiments of the invention; it is not limited to the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。
Claims (5)
1. the method optimizing server buffer management, it is characterized in that, it is modified the storage organization of the cache module in web Reverse Proxy and buffer memory, build the L2 cache structure of web Reverse Proxy layering, and configure and include the cache invalidation mode that the L2 cache storage organization of layering matches, specifically comprise the following steps that
Step 1: be revised as by the storage organization of web Reverse Proxy and be stored separately according to website domain name, different website domain names occupies different memory areas；
Step 2: build the L2 cache structure of web Reverse Proxy layering, one website domain contains multiple webpage url under one's name, thus on the storage organization based on website domain name buffer memory, refining to be divided into by the storage organization of web Reverse Proxy again and be stored separately according to webpage url, different webpage url occupies different memory areas；
Step 3: the management module of amendment web reverse-proxy caching: the cache invalidation mode carried by web Reverse Proxy and the L2 cache storage organization after amendment carry out adaptation, make web Reverse Proxy both support the buffer memory deleting mechanism based on webpage URL, the buffer memory deleting mechanism based on website domain name can be supported again；
Step 4: the L2 cache structure for web Reverse Proxy configures, and arranges store path for each website domain Web caching data under one's name, store path form is /opt/cache/ website domain name ,/opt/cache/ website domain/URL indicate。
2. a kind of method optimizing server buffer according to claim 1, it is characterized in that: the cache invalidation mode of web Reverse Proxy is based upon based on the buffer memory structure of webpage URL, owing to web Reverse Proxy storage organization is revised as secondary storage structure by original one-level storage organization, correspondingly, the cache invalidation mode that web Reverse Proxy carries is revised as the pattern matched with secondary storage structure；
The data content of website domain name is under the jurisdiction of level cache structure, as this data content lost efficacy, empties one-level storage organization corresponding to website domain name and all secondary storage structures included thereof；
The data content of webpage URL is under the jurisdiction of L2 cache structure, as this data content lost efficacy, empties secondary storage structure corresponding for webpage URL。
3. a kind of method optimizing server buffer according to claim 1, it is characterized in that: after web Reverse Proxy startup work, when need to update under whole domain name data cached time, by sending the instruction of " removing buffer memory " to web Reverse Proxy, this instruction indicate the data of pre-deletion be domain name rank or URL level other；
If the data of domain name rank, then the order of " removing buffer memory " can empty all data in this domain name memory block, website；
If the other data of URL level, then the order of " removing buffer memory " only can remove the data in single webpage URL memory block, without affecting the data content of other URL in its affiliated web site domain name memory block。
4. a kind of method optimizing server buffer according to claim 2, it is characterized in that: after the cache contents of a webpage URL exceedes effect duration, web Reverse Proxy can first find the memory block that domain name belonging to this webpage URL occupies, then find the memory block of this webpage URL in the memory block of this domain name, and delete cache contents；When webpage URL cache contents all in a domain name district exceed effect duration, web Reverse Proxy directly empties the memory block of this domain name。
5. a kind of method optimizing server buffer according to claim 3, it is characterised in that: further, " removing buffer memory " instruction can be passed through shell script, python language, perl language etc. and realize。
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| CN108694215A (en) * | 2017-04-12 | 2018-10-23 | 北京京东尚科信息技术有限公司 | Method, apparatus, electronic equipment and the computer-readable medium of web cache preheating |
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| CN110413846A (en) * | 2019-07-29 | 2019-11-05 | 数译(成都)信息技术有限公司 | For the data processing method of webpage mirror image, device and computer readable storage medium |
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