CN104424120B - A kind of buffer memory management method and device - Google Patents
A kind of buffer memory management method and device Download PDFInfo
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- CN104424120B CN104424120B CN201310384995.1A CN201310384995A CN104424120B CN 104424120 B CN104424120 B CN 104424120B CN 201310384995 A CN201310384995 A CN 201310384995A CN 104424120 B CN104424120 B CN 104424120B
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- fragments
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Abstract
The invention provides a kind of buffer memory management method and device, this method includes：The complete page is preserved with the first caching, the page fragments for being constituted the page are preserved with the second caching, the initial data for being constituted the page fragments is preserved with the 3rd caching；The cache hit rate of the page in first caching is calculated in real time；If the cache hit rate is higher than the first threshold of setting, keep the Page-saving in described first caches；Otherwise the page is deleted from the described first caching, and cache way is selected according to the data characteristicses of the page.Using the present invention, the service efficiency of caching can be improved.
Description
Technical field
The present invention relates to web technology field, in particular to a kind of buffer memory management method and device.
Background technology
At present in web technology field, most of website by by commonly using data carried out in the storage of more high speed
Interim storage, directly using the data in cache to avoid the access to low-speed device when accessing, so as to improve
The performance of system.
Each current website uses single cache during caching is used, however, the accessing characteristic of data is different
, single caching can not solve the otherness of data, so as to cause the utilization ratio of caching low.
The content of the invention
The embodiment of the present invention provides a kind of buffer memory management method and device, to improve caching utilization ratio.
Therefore, the embodiment of the present invention provides following technical scheme：
A kind of buffer memory management method, including：
The complete page is preserved with the first caching, the page fragments for being constituted the page are preserved with the second caching, with the 3rd
Caching preserves the initial data for constituting the page fragments；
The cache hit rate of the page in first caching is calculated in real time；
If the cache hit rate keeps delaying the Page-saving described first higher than the first threshold of setting
In depositing；Otherwise the page is deleted from the described first caching, and cache way is selected according to the data characteristicses of the page.
Further, methods described also includes：
The cache hit rate of the page fragments in second caching is calculated in real time；
If the cache hit rate of the page fragments keeps protecting the page fragments higher than the Second Threshold of setting
Exist in second caching；Otherwise the page is deleted from the described second caching.
Further, methods described also includes：
The cache hit rate of the initial data in the 3rd caching is calculated in real time；
If the cache hit rate of the initial data keeps protecting the initial data higher than the 3rd threshold value of setting
Exist in the 3rd caching；Otherwise the initial data is deleted from the described 3rd caching.
Preferably, preserving the complete page with the first caching includes：
The page is preserved by key of the URL of the page.
Preferably, the page fragments for being constituted the page with the second caching preservation include：
The numbering of the page fragments is added to be that key is preserved the text of the page fragments with the URL of the page.
Preferably, the initial data for being constituted the page fragments with the 3rd caching preservation includes：
The initial data is stored as conjoint tendon using the object type of the initial data and object major key ID.
A kind of cache management device for website, including：
First caching, the complete page for preserving；
Second caching, the page fragments of the page are constituted for preserving；
3rd caching, the initial data of the page fragments is constituted for preserving；
Computing module, the cache hit rate for calculating the page in first caching in real time；
Update module, during for the cache hit rate in the page higher than the first threshold set, keeps the page
Face is stored in first caching, otherwise deletes the page from the described first caching, and according to the data of the page
Feature selects cache way.
Further, the computing module, is additionally operable to calculate the caching life of the page fragments in second caching in real time
Middle rate；
Correspondingly, the update module, is additionally operable to second threshold of the cache hit rate higher than setting in the page fragments
During value, keep the Page-saving in described second caches；Otherwise the page is deleted from the described second caching.
Further, the computing module, is additionally operable to calculate the caching life of the initial data in the 3rd caching in real time
Middle rate；
Correspondingly, the update module, is additionally operable to threeth threshold of the cache hit rate higher than setting in the initial data
During value, keep the initial data being stored in the 3rd caching；Otherwise delete described original from the described 3rd caching
Data.
Preferably, first caching is preserved by key of the URL of the page to the page.Second caching
The numbering of the page fragments is added to be that key is preserved the text of the page fragments with the URL of the page.Described 3rd
Caching is stored the initial data as conjoint tendon using the object type of the initial data and object major key ID.
Buffer memory management method and device provided in an embodiment of the present invention, can be according to data using hierarchical cache mode
Feature carries out pointedly selecting specific caching, so that the utilization ratio of caching is greatly improved.Further, lead to
The occupation mode of adjust automatically caching is crossed, the use of caching can be dynamically adjusted in real time according to the characteristics of system data, so as to enter
One step improves the service efficiency of caching.
Brief description of the drawings
Fig. 1 is the flow chart of buffer memory management method of the embodiment of the present invention；
Fig. 2 is the structural representation of cache management device of the embodiment of the present invention；
Fig. 3 is the configuration diagram of web station system hierarchical cache in the embodiment of the present invention；
Fig. 4 is the process schematic of website automatic adjustment system hierarchical cache in the embodiment of the present invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the present invention is described in detail.
Single cache is used during caching is used for each website in the prior art so that Buffer Utilization is low
The problem of, the embodiment of the present invention provides a kind of buffer memory management method and device for website, using hierarchical cache mode, can be with
Carried out pointedly selecting specific caching according to the characteristics of data, so that the utilization ratio of caching is greatly improved.
Further, the occupation mode cached by adjust automatically, can dynamically adjust caching in real time according to the characteristics of system data
Use, so as to further improve the service efficiency of caching.
It should be noted that in embodiments of the present invention, implementing for the caching of different stage can use following sides
Formula.
Page cache：The realization of page cache is realized when specific implementation by the technology of filter, in mistake
Filter one-level intercepts and captures the page of request, and is cached the text of the page by key of URL.When implementing, it is desirable to
System can not only be by page cache, additionally it is possible to be dynamically selected according to external command using caching or directly generate page
Face.
Page fragments are cached：The caching of page fragments can use the technology of above page cache, generate the page when
Time is cached page fragments, and caching adds segment number to be cached the text of page fragments as key using URL.Specific real
When existing, the system of also requiring that can not only cache page fragments, can be also dynamically selected according to external command
It is to be cached using page fragments or directly generate page fragments.
Primary data cache：Realizing for primary data cache can be carried out based on the object in internal memory, and initial data is carried
It is encapsulated into after taking in internal storage data object, internal storage data pair is directly used during modification, deletion and inquiry afterwards
As so as to avoid the access to database.When data stored in memory object, object type and object master can be used
Key ID is stored as conjoint tendon, gets corresponding data object by key when data manipulation, then carry out data
Processing and displaying.When implementing, the system of also requiring that can not only be by primary data cache, and also wanting being capable of basis
External command is dynamically selected using primary data cache or directly accesses the database acquisition data.
As shown in figure 1, being the flow chart of buffer memory management method of the embodiment of the present invention, comprise the following steps：
Step 101, the complete page is preserved with the first caching, the page piece for being constituted the page is preserved with the second caching
Section, the initial data for being constituted the page fragments is preserved with the 3rd caching；
Step 102, the cache hit rate of the page in first caching is calculated in real time；
Step 103, if the cache hit rate is kept the Page-saving in institute higher than the first threshold of setting
State in the first caching；Otherwise the page is deleted from the described first caching, and selects slow according to the data characteristicses of the page
Deposit mode.
Certainly, the page fragments in being cached for second, the page fragments in second caching can also be calculated in real time
Cache hit rate.If the cache hit rate of the page fragments is kept the page higher than the Second Threshold of setting
Fragment is stored in second caching；Otherwise the page is deleted from the described second caching.
Equally, the initial data in being cached for the 3rd, the initial data in the 3rd caching can also be calculated in real time
Cache hit rate.If the cache hit rate of the initial data is higher than the 3rd threshold value of setting, holding will be described original
Data are stored in the 3rd caching；Otherwise the initial data is deleted from the described 3rd caching.
The cache hit rate of page fragments refers to that the page fragments to be accessed find and in the buffer and not looked in the buffer
To the proportionate relationship of (needing generation in real time), i.e., the number of times found in the buffer (is found in the buffer with total lookup number of times
The summation of number of times and the number of times not found in the buffer) percentage.Similarly, refer to for the cache hit rate of initial data
It is also to find and the proportionate relationship for not finding (need to access database acquisition) in the buffer, both computational methods in the buffer
It is consistent.
It should be noted that above-mentioned first threshold, Second Threshold and the 3rd threshold value can be with identical, and can also be different, it is right
This embodiment of the present invention is not limited.
It can be seen that, buffer memory management method provided in an embodiment of the present invention, can be according to the spies of data using hierarchical cache mode
Point carries out pointedly selecting specific caching, so that the utilization ratio of caching is greatly improved.Further, pass through
The occupation mode of adjust automatically caching, can dynamically adjust the use of caching, so as to enter one in real time according to the characteristics of system data
Step improves the service efficiency of caching.
Correspondingly, the embodiment of the present invention also provides a kind of cache management device, as shown in Fig. 2 being a kind of knot of the device
Structure schematic diagram.
In this embodiment, described device includes:
First caching 201, the complete page for preserving；
Second caching 202, the page fragments of the page are constituted for preserving；
3rd caching 203, the initial data of the page fragments is constituted for preserving；
Computing module 204, the cache hit rate for calculating the page in first caching in real time；
Update module 205, during for the cache hit rate in the page higher than the first threshold set, keeping will be described
Otherwise Page-saving deletes the page in described first caches from the described first caching, and according to the number of the page
Cache way is selected according to feature.
Certainly, in another embodiment of cache management device of the present invention, computing module 204 can also calculate described in real time
The cache hit rate of page fragments in second caching.Correspondingly, update module 205, are additionally operable in the slow of the page fragments
Deposit and shoot straight when the Second Threshold of setting, keep the page fragments being stored in second caching；Otherwise from institute
State and the page is deleted in the second caching.
Equally, in another embodiment of cache management device of the present invention, computing module 204 can also calculate described in real time
The cache hit rate of initial data in 3rd caching.Correspondingly, update module 205, are additionally operable in the slow of the initial data
Deposit and shoot straight when three threshold value of setting, keep the initial data being stored in the 3rd caching；Otherwise from institute
State in the 3rd caching and delete the initial data.
The calculating of the cache hit rate of page fragments and the cache hit rate of initial data and the cache hit rate of the page
Calculating it is similar, be not described in detail herein.
The buffer memory management method and device of the embodiment of the present invention can apply to web station system, achieve hierarchical cache.
As shown in figure 3, being the configuration diagram of web station system hierarchical cache in the embodiment of the present invention.
User accesses website, asks a page, the page is by several page fragments in the hierarchical cache framework of website
Synthesis, while page fragments are also based on Raw Data Generation, initial data is then obtained from database.
Based on the framework shown in Fig. 3, the complete page for returning to user can be cached, can also by it is therein certain
Individual page fragments are cached, and can also cache original data, thus constitute the framework of website hierarchical cache.
If full page cached, next user can obtain when accessing the page directly from caching
The page, then eliminate below the page synthesis, page fragments generation, initial data obtain etc. process so that improve system visit
The performance asked.Similarly, if page fragments cached, page fragments synthesis, initial data acquisition below can be saved
Process, also improve to a certain extent system access performance.
Above-mentioned website hierarchical cache framework, the characteristics of being accessed according to different pieces of information uses different cache way.I.e.
The suitable caching using full page of access of some data, the caching of the suitable page fragments of access of some data, and some
Data are adapted to primary data cache, by that can maximize the use of caching with reference to multi-level buffer mode, can greatly improve number
According to buffer efficiency.
Specifically, cache way can be determined according to whether the data of caching often change, such as, some pages are kept
Constant, some pages often change.The page of such as book recommendation, it is assumed that the address of the page is:
http://www.book.com/recommend.jspPage=1
http://www.book.com/recommend.jspPage=2
http://www.book.com/recommend.jspPage=3
It is constant with regard to this page three holdings, then according to page cache mode can be that URL is cached for key by this page three, use
Family just can be directly using the page that these are cached when recommendation is checked.But for just uncomfortable for the page of retrieval
Page cache is done in conjunction, because these pages often change, and is differed greatly.For example, the address of retrieval is：
http://www.search.com/result.jspKeyword=starfishes
http://www.search.com/result.jspKeyword=thieves
http://www.search.com/result.jspKeyword=toilet brush
The result of one people's retrieval, is less likely to another people retrieval, if such case is using page cache
Mode, then substantially committed memory in vain.
And in the retrieval result page if the region of one piece of popular term of display, then this region can be entered
Row page fragments are cached, because the results page of different people's retrievals is different, but this block region in the page is all identical,
Therefore it can be cached, directly bring and use when different results page synthesis.
Therefore, in embodiments of the present invention, different cache way can respectively be treated for different situations, certainly
Three kinds of above-mentioned cache way can be used simultaneously.
As shown in figure 4, being the process schematic of website automatic adjustment system hierarchical cache in the embodiment of the present invention.
In this process, computing module needs the real-time statistics page, page fragments, the cache hit rate of initial data, example
Such as it is directed to for the page, collects the page access number of times of statistics caching and the access times of physical page, and calculate the caching page
Access times and total access times percentage, sent when less than given threshold (first threshold) to page cache and go to delay
The instruction deposited, sends the instruction using caching when higher than given threshold, each corresponding cache module after instruction is received from
The use of dynamic adjustment caching.
Specific adjustment process is as follows：
Step 1：System uses page cache first.
Step 2：Computing module calculates page cache hit rate, if calculating obtained page cache hit rate less than setting
Threshold value (first threshold), then remove page cache, if being consistently higher than given threshold (first threshold), maintains page cache
Use.
Step 3：When page cache hit rate is less than given threshold (first threshold), system removes page cache automatically,
It is changed to cache using page fragments.
Step 4：Computing module continues to calculate page fragments cache hit rate, if calculating obtained page fragments caching life
Middle rate is less than given threshold (Second Threshold), then removes page fragments caching, if being consistently higher than given threshold (Second Threshold),
Then maintain the use of page fragments caching.
Step 5：When the hit rate that page fragments are cached is less than given threshold (Second Threshold), system removes the page automatically
Fragment buffer, is changed to use primary data cache.
Step 6：Computing module continues to calculate primary data cache hit rate, if calculating obtained primary data cache life
Middle rate is less than given threshold (the 3rd threshold value), then removes primary data cache, be changed to directly access the database acquisition data, if
Given threshold (the 3rd threshold value) is consistently higher than, then maintains the use of primary data cache.
, can be with when implementing it should be noted that the above-mentioned calculating to different cache hit rates can be carried out simultaneously
Completed by different threads.
As can be seen here, using buffer memory management method of the present invention and device, by website automatic adjustment system hierarchical cache, improve
The utilization ratio of system level caching, and with following remarkable result：
1. improve systematic function：By the use of the use of hierarchical cache, and automatic regulating function, can cause be
System can maximally utilize caching, so as to improve the response speed of system, improve in a kind of optimal mode using caching
Performance.
2. improve the utilization rate of system resource：Caching is a kind of system resource, is also required to during the use of caching
The system resource of bottom is used, and hierarchical cache and using for automatic regulating function make it that the utilization ratio of resource is higher, more can
Enough play the value of resource.
3. realize the optimization collocation of system resource：During caching is used must the high speed of application system deposit
Storage, such as internal memory, the use of these resources necessarily reduces the resource required for the operation of other systems function, especially makes in caching
It is even more that one kind of resource is wasted in the case of improperly.And the realization of adjust automatically hierarchical cache can be optimized automatically
Use resource, occur that resource is occupied and the problem of not high utilization ratio so as to avoid.The resource for improving system is excellent
Change allocative abilities.
Buffer memory management method and device provided in an embodiment of the present invention, can pointedly be selected according to the characteristics of data
Specific cache way is selected, so as to be greatly improved in the utilization ratio of caching, while the use of adjust automatically caching
Mode can dynamically adjust the use of caching according to the characteristics of system data in real time, so as to accomplish further to improve the use of caching
Efficiency.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they
In multiple modules or step single integrated circuit module is fabricated to realize.So, the present invention is not restricted to any specific
Hardware and software is combined.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of buffer memory management method, it is characterised in that including：
The complete page is preserved with the first caching, the page fragments for being constituted the page are preserved with the second caching, with the 3rd caching
Preserve the initial data for constituting the page fragments；
The cache hit rate of the page in first caching is calculated in real time；
If the cache hit rate is higher than the first threshold of setting, keep the Page-saving in the described first caching
In；Otherwise the page is deleted from the described first caching, and cache way is selected according to the data characteristicses of the page.
2. according to the method described in claim 1, it is characterised in that also include：
The cache hit rate of the page fragments in second caching is calculated in real time；
If the cache hit rate of the page fragments keeps the page fragments being stored in higher than the Second Threshold of setting
In second caching；Otherwise the page is deleted from the described second caching.
3. method according to claim 1 or 2, it is characterised in that also include：
The cache hit rate of the initial data in the 3rd caching is calculated in real time；
If the cache hit rate of the initial data keeps the initial data being stored in higher than the 3rd threshold value of setting
In 3rd caching；Otherwise the initial data is deleted from the described 3rd caching.
4. according to the method described in claim 1, it is characterised in that preserving the complete page with the first caching includes：
The page is preserved by key of the URL of the page.
5. according to the method described in claim 1, it is characterised in that the page fragments for being constituted the page are preserved with the second caching
Including：
The numbering of the page fragments is added to be that key is preserved the text of the page fragments with the URL of the page.
6. according to the method described in claim 1, it is characterised in that preserved with the 3rd caching and constituted the original of the page fragments
Data include：
The initial data is stored as conjoint tendon using the object type of the initial data and object major key ID.
7. a kind of cache management device for website, it is characterised in that including：
First caching, the complete page for preserving；
Second caching, the page fragments of the page are constituted for preserving；
3rd caching, the initial data of the page fragments is constituted for preserving；
Computing module, the cache hit rate for calculating the page in first caching in real time；
Update module, during for the cache hit rate in the page higher than the first threshold set, the page is protected in holding
Exist in first caching, otherwise delete the page from the described first caching, and according to the data characteristicses of the page
Select cache way.
8. device according to claim 7, it is characterised in that
The computing module, is additionally operable to calculate the cache hit rate of the page fragments in second caching in real time；
The update module, is additionally operable to when the cache hit rate of the page fragments is higher than the Second Threshold set, keeping will
The Page-saving is in described second caches；Otherwise the page is deleted from the described second caching.
9. the device according to claim 7 or 8, it is characterised in that
The computing module, is additionally operable to calculate the cache hit rate of the initial data in the 3rd caching in real time；
The update module, is additionally operable to when the cache hit rate of the initial data is higher than three threshold value set, keeping will
The initial data is stored in the 3rd caching；Otherwise the initial data is deleted from the described 3rd caching.
10. device according to claim 7, it is characterised in that
First caching is preserved by key of the URL of the page to the page；
Second caching adds the numbering of the page fragments to be that key enters the text of the page fragments with the URL of the page
Row is preserved；
3rd caching is using the object type of the initial data and object major key ID as conjoint tendon by the initial data
Stored.
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| CN201310384995.1A CN104424120B (en) | 2013-08-29 | 2013-08-29 | A kind of buffer memory management method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310384995.1A CN104424120B (en) | 2013-08-29 | 2013-08-29 | A kind of buffer memory management method and device |
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| CN104424120B true CN104424120B (en) | 2017-10-27 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075236A (en) * | 2006-06-12 | 2007-11-21 | 腾讯科技（深圳）有限公司 | Apparatus and method for accelerating browser webpage display |
| CN101702173A (en) * | 2009-11-11 | 2010-05-05 | 中兴通讯股份有限公司 | Method and device for increasing access speed of mobile portal dynamic page |
| CN102955786A (en) * | 2011-08-22 | 2013-03-06 | 北大方正集团有限公司 | Method and system for caching and distributing dynamic webpage data |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100509276B1 (en) * | 2001-08-20 | 2005-08-22 | 엔에이치엔(주) | Method for searching web page on popularity of visiting web pages and apparatus thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075236A (en) * | 2006-06-12 | 2007-11-21 | 腾讯科技（深圳）有限公司 | Apparatus and method for accelerating browser webpage display |
| CN101702173A (en) * | 2009-11-11 | 2010-05-05 | 中兴通讯股份有限公司 | Method and device for increasing access speed of mobile portal dynamic page |
| CN102955786A (en) * | 2011-08-22 | 2013-03-06 | 北大方正集团有限公司 | Method and system for caching and distributing dynamic webpage data |
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