CN107038127A - Application system and its buffer control method and device - Google Patents
Application system and its buffer control method and device Download PDFInfo
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- CN107038127A CN107038127A CN201710069505.7A CN201710069505A CN107038127A CN 107038127 A CN107038127 A CN 107038127A CN 201710069505 A CN201710069505 A CN 201710069505A CN 107038127 A CN107038127 A CN 107038127A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
- G06F12/0875—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches with dedicated cache, e.g. instruction or stack
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Abstract
The embodiment of the present application provides a kind of application system and its buffer control method and device, and this method includes：Obtain the first of caching and specify parameter value scope and the second specified parameter value scope；The cache hit rate corresponding to each first specified parameter value in the range of the described first specified parameter value is obtained, and determines wherein to meet the first specified parameter value corresponding to the cache hit rate of first condition；The parameter value for specifying parameter by the first of the caching is adjusted to the first specified parameter value met corresponding to the cache hit rate of first condition；The cache hit rate corresponding to each second specified parameter value in the range of the described second specified parameter value is obtained, and determines wherein to meet the second specified parameter value corresponding to the cache hit rate of second condition；The parameter value for specifying parameter by the second of the caching is adjusted to the second specified parameter value met corresponding to the cache hit rate of second condition.The embodiment of the present application can improve the cache hit rate of application system.
Description
Technical field
The application is related to buffer control technical field, more particularly, to a kind of application system and its buffer control method and dress
Put.
Background technology
It is well known that caching is the buffering area (being referred to as Cache) of data exchange.General, in order to improve application system
Performance (such as response time, handling capacity), can usually introduce different types of caching.And for caching, cache hit rate
It is to judge one of key factor of its acceleration effect quality.When user's access cache, if having been cached in the caching to be interviewed
Referred to as cache hit during the data asked；Otherwise it is exactly to be referred to as cache miss, at this time, it may be necessary to from downstream (such as database
Deng) access evidence.
As can be seen here, the height of the cache hit rate of application system directly affects the quality of application system performance.Therefore, such as
It is technical problem urgently to be resolved hurrily at present that what, which improves cache hit rate,.
The content of the invention
The purpose of the embodiment of the present application is to provide a kind of application system and its buffer control method and device, answered with improving
With the cache hit rate of system.
To reach above-mentioned purpose, on the one hand, the embodiment of the present application provides a kind of buffer control method, including following step
Suddenly：
Obtain the first of caching and specify parameter value scope and the second specified parameter value scope；
The cache hit rate corresponding to each first specified parameter value in the range of the described first specified parameter value is obtained, and
It is determined that wherein meeting the first specified parameter value corresponding to the cache hit rate of first condition；
The parameter value for specifying parameter by the first of the caching is adjusted to the cache hit rate institute for meeting first condition
Corresponding first specifies parameter value；
The cache hit rate corresponding to each second specified parameter value in the range of the described second specified parameter value is obtained, and
It is determined that wherein meeting the second specified parameter value corresponding to the cache hit rate of second condition；
The parameter value for specifying parameter by the second of the caching is adjusted to the cache hit rate institute for meeting second condition
Corresponding second specifies parameter value.
On the other hand, the embodiment of the present application provides a kind of buffer control device, including：
Span acquisition module, parameter value scope and the second specified parameter value are specified for obtaining the first of caching
Scope；
First hit rate acquisition module, each first specified parameter in the range of parameter value is specified for obtaining described first
The corresponding cache hit rate of value, and determine wherein to meet the first specified parameter corresponding to the cache hit rate of first condition
Value；
First specifies parameter adjustment module, for specifying the parameter value of parameter to be adjusted to described full by the first of the caching
First corresponding to the cache hit rate of sufficient first condition specifies parameter value；
Second hit rate acquisition module, each second specified parameter in the range of parameter value is specified for obtaining described second
The corresponding cache hit rate of value, and determine wherein to meet the second specified parameter corresponding to the cache hit rate of second condition
Value；
Second specifies parameter adjustment module, for specifying the parameter value of parameter to be adjusted to described full by the second of the caching
Second corresponding to the cache hit rate of sufficient second condition specifies parameter value.
On the other hand, the embodiment of the present application provides a kind of application system, including：
Processor；
Memory, for memory buffers control device；
Wherein, when the buffer control device is handled by the processor, following steps are performed：
Obtain the first of caching and specify parameter value scope and the second specified parameter value scope；
The cache hit rate corresponding to each first specified parameter value in the range of the described first specified parameter value is obtained, and
It is determined that wherein meeting the first specified parameter value corresponding to the cache hit rate of first condition；
The parameter value for specifying parameter by the first of the caching is adjusted to the cache hit rate institute for meeting first condition
Corresponding first specifies parameter value；
The cache hit rate corresponding to each second specified parameter value in the range of the described second specified parameter value is obtained, and
It is determined that wherein meeting the second specified parameter value corresponding to the cache hit rate of second condition；
The parameter value for specifying parameter by the second of the caching is adjusted to the cache hit rate institute for meeting second condition
Corresponding second specifies parameter value.
The technical scheme provided from above the embodiment of the present application, the embodiment of the present application is referred to by obtaining the first of caching
The cache hit rate corresponding to each first specified parameter value of parameter value scope is determined, it is determined that wherein meeting first condition
First corresponding to cache hit rate specifies parameter value, and then specify parameter by the first of caching first specifies parameter value to adjust
Whole the first specified parameter value met for this corresponding to cache hit rate of first condition；On this basis, it is slow further through obtaining
Second deposited specifies the cache hit rate corresponding to each second specified parameter value of parameter value scope, it is determined that wherein meeting
Second corresponding to the cache hit rate of second condition specifies parameter value, and then specify parameter by the second of caching second is specified
Parameter value be adjusted to this meet corresponding to the cache hit rate of second condition second specify parameter value, and first specify parameter
The parameter that parameter is all important influence cache hit rate is specified with second, therefore, is adjusted to improve compared with the figure of merit and answers
With the cache hit rate of system.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the flow chart of the buffer control method of the embodiment of the application one；
Fig. 2 specifies each first specified parameter value in the range of parameter value right to obtain first in the embodiment of the application one
The flow chart for the cache hit rate answered；
Fig. 3 specifies each second specified parameter value in the range of parameter value right to obtain second in the embodiment of the application one
The flow chart for the cache hit rate answered；
Fig. 4 is the structured flowchart of the buffer control device of the embodiment of the application one；
Fig. 5 is the structured flowchart of the application system of the embodiment of the application one.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
With reference to shown in Fig. 1, the buffer control method of the embodiment of the present application comprises the following steps：
S101, the first specified parameter value scope for obtaining caching and second specify parameter value scope.
In the embodiment of the present application, described caching can be local cache or distributed caching.The application's
In one embodiment, the local cache for example can be local memory caching.In one embodiment of the application, described point
Cloth caching is such as can be Memcached distributed cachings, Redis distributed cachings, Tair distributed cachings.The application
In embodiment, described caching can also be map cachings, and the map cachings are i.e. by the map interfaces in java with key-
Value (key-value pair) mode data storage.
It is general, influence the cache hit rate of caching parameter have a lot, such as buffer memory capacity be cached with the effect phase.And
The embodiment of the present application then can realize the lifting of cache hit rate by adjusting cache hit rate affecting parameters that some specify.Example
As in the embodiment of the present application, the lifting of cache hit rate can be realized by adjusting buffer memory capacity and being cached with the effect phase.Wherein,
Described first specifies parameter to be buffer memory capacity, and corresponding, described second specifies parameter to be to be cached with the effect phase.Certainly,
Described first specifies parameter to be the caching term of validity, and corresponding, described second specifies parameter to be buffer memory capacity.And
In the application another embodiment, as needed can also by adjust more or less cache hit rate affecting parameters come
Realize.
In the embodiment of the present application, because the first specified parameter value scope and second specifies parameter value scope to be usually root
It is pre-configured according to needing.Therefore, parameter and second is specified to specify the corresponding configuration information of parameter can by reading first
Parameter value scope is specified with corresponding the first specified parameter value scope and second that obtains.
S102, acquisition described first specify the cache hit corresponding to each first specified parameter value in the range of parameter value
Rate, and determine wherein to meet the first specified parameter value corresponding to the cache hit rate of first condition.
In one embodiment of the application, it is described obtain it is described first specify parameter value in the range of each first specify
Cache hit rate corresponding to parameter value, and determine wherein to meet the first specified ginseng corresponding to the cache hit rate of first condition
Numerical value.In one embodiment of the application, the cache hit rate for meeting first condition can be：Each described first finger
Determine the soprano in the cache hit rate corresponding to parameter value.It is described to meet first in another embodiment of the application
The cache hit rate of part can also be：Predetermined threshold value is reached in cache hit rate corresponding to each described first specified parameter value
's.This step implement can with as shown in Fig. 2 including：
S1021, determine described first specify parameter value in the range of be not present correspondence cache hit rate first specify ginseng
Numerical value, constitutes first and specifies set of parameter values.
In the embodiment of the present application, the first specified parameter value corresponding to the cache hit rate of first condition is met for acquisition,
The cache hit rate corresponding to each first specified parameter value in the range of the described first specified parameter value can be obtained, with therefrom
It is determined that wherein meeting the first specified parameter value corresponding to the cache hit rate of first condition.It is thus necessary to determine that described first
Specify parameter value in the range of be not present correspondence cache hit rate first specify parameter value, and by these first specify parameter value
Constitute first and specify set of parameter values.
S1022, the specified parameter value of taking-up one first from the described first specified set of parameter values.
S1023, by the first of the caching specify parameter parameter value be adjusted to this first specify parameter value.
The cache hit rate under the first specified parameter value is buffered in described in S1024, acquisition.
The application one embodiment, typically can be by delaying in the statistical unit time such as default counter (or measurement period)
The access request number of times and hit-count deposited, then by calculating the ratio of hit-count and access request number of times, can be obtained
The cache hit rate of the caching in the current statistic cycle, and cache hit rate record is preserved, so as to be ordered by reading the caching
Middle rate record can obtain the cache hit rate being buffered under some first specified parameter value.
S1025, judge first specify in set of parameter values with the presence or absence of it is remaining be not provided with first specify parameter value.If
In the presence of step S1022 is then performed, step S1026 is otherwise performed.By that analogy, until getting described first specifies parameter value collection
Untill each in conjunction first specifies the cache hit rate corresponding to parameter value.
S1026, by described first specify parameter value in the range of each first specify parameter value corresponding to cache hit
Rate is ranked up, and parameter value is specified to determine wherein to meet first corresponding to the cache hit rate of first condition.
In the embodiment of the present application, the sequence can be descending order sequence, may thereby determine that the first cis-position
Cache hit rate be highest cache hit rate.Certainly, the sequence can also be ascending order sequence, so as to
It is determined that the cache hit rate of last position is highest cache hit rate.
S103, by the first of the caching specify parameter parameter value be adjusted to the cache hit for meeting first condition
First corresponding to rate specifies parameter value.
S104, acquisition described second specify the cache hit corresponding to each second specified parameter value in the range of parameter value
Rate, and determine wherein to meet the second specified parameter value corresponding to the cache hit rate of second condition.
In one embodiment of the application, institute is adjusted in the parameter value for specifying parameter by the first of the caching
State meet corresponding to the cache hit rate of first condition first specify parameter value on the basis of, it is described obtain it is described second specify
Cache hit rate in the range of parameter value corresponding to each second specified parameter value, and determine wherein to meet the slow of second condition
Deposit second corresponding to hit rate and specify parameter value, in one embodiment of the application, the caching for meeting second condition
Hit rate can be：The soprano in cache hit rate corresponding to each described second specified parameter value.In the another of the application
In one embodiment, the cache hit rate for meeting second condition can also be：Each described second specified parameter value institute is right
Predetermined threshold value is reached in the cache hit rate answered.This step implement can with as shown in figure 3, including：
S1031, determine described second specify parameter value in the range of be not present correspondence cache hit rate second specify ginseng
Numerical value, constitutes second and specifies set of parameter values.
In the embodiment of the present application, the second specified parameter value corresponding to the cache hit rate of second condition is met for acquisition,
The cache hit rate corresponding to each second specified parameter value in the range of the described second specified parameter value can be obtained, with therefrom
It is determined that wherein meeting the second specified parameter value corresponding to the cache hit rate of second condition.It is thus necessary to determine that described second
Specify parameter value in the range of be not present correspondence cache hit rate second specify parameter value, and by these second specify parameter value
Constitute second and specify set of parameter values.
S1032, the specified parameter value of taking-up one second from the described second specified set of parameter values.
S1033, by the second of the caching specify parameter parameter value be adjusted to this second specify parameter value.
The cache hit rate under the second specified parameter value is buffered in described in S1034, acquisition.
The application one embodiment, typically can be by delaying in the statistical unit time such as default counter (or measurement period)
The access request number of times and hit-count deposited, then can be worked as by calculating the ratio of hit-count and access request number of times
In preceding measurement period the cache hit rate of the caching and preserve cache hit rate record so that by reading the cache hit rate
Record can obtain the cache hit rate being buffered under some second specified parameter value.
S1035, judge second specify in set of parameter values with the presence or absence of it is remaining be not provided with second specify parameter value.If
In the presence of step S1032 is then performed, step S1036 is otherwise performed.By that analogy, until getting described second specifies parameter value collection
Untill each in conjunction second specifies the cache hit rate corresponding to parameter value.
S1036, by described second specify parameter value in the range of each second specify parameter value corresponding to cache hit
Rate is ranked up, and parameter value is specified to determine wherein to meet second corresponding to the cache hit rate of second condition.
S105, by the second of the caching specify parameter parameter value be adjusted to the cache hit for meeting second condition
Second corresponding to rate specifies parameter value.
In one embodiment of the application, the first specified parameter value scope and the second specified ginseng for obtaining caching
Number span, can be performed when receiving timing buffer control task.The timing buffer control task is used as one
Individual timing drives message, for determining the frequency of caching adjustment, often receives to a timing buffer control task, is carried out once
Caching adjustment control.Because the cache hit rate of caching is counted within the unit interval, the caching of different statistical time ranges is ordered
Middle rate might have difference, therefore, and the embodiment of the present application can cause the caching of caching to order by this strategy periodically adjusted
Middle rate adapts to this change as far as possible, in favor of improving the cache hit rate of caching.
In another embodiment of the application, the first specified parameter value scope and second that the acquisition is cached are specified
Parameter value scope, can be performed when receiving timing buffer control task.The first specified ginseng for obtaining caching
Number spans and second specify parameter value scope or current receiving timing buffer control task and system
Portfolio is less than what is performed during predetermined threshold value.That is, in the embodiment of the present application, receiving timing buffer control task
When, it can also determine whether whether the current portfolio of system is less than predetermined threshold value, if be less than predetermined threshold value, perform
The timing buffer control task, the normal operation of system may be influenceed to avoid caching in the adjustment of peak traffic phase as far as possible；It is no
Then, this timing buffer control task is abandoned.
In the embodiment above, it is the accuracy of raising cache hit rate, described first specifies each in the range of parameter value
Individual first specifies the cache hit rate corresponding to parameter value, can be counted under same buffered hit rate measurement period.Example
Such as all with 1 hour for measurement period.Corresponding, described second specifies each second specified parameter value institute in the range of parameter value right
The cache hit rate answered or counted under same buffered hit rate measurement period.
In one embodiment of the application, above-mentioned buffer control method can also comprise the following steps：
In advance specified data object is put into the caching, and the caching term of validity of the specified data object is set to
Never fail；So that map is cached as an example, the caching term of validity to the specified data object is set to never fail, can be with
It is set to never fail for the term of validity to key values corresponding to the specified data object.
It is corresponding, after the response for access request is received, confirm whether the data object in the response belongs to institute
State specified data object；
If it is confirmed that the data object in the response belongs to the specified data object, then by the data in the response
Object is updated to the caching.
In embodiments herein, the specified data object includes predictable hyperpyrexia degrees of data object, in this Shen
Please be under an exemplary scenario, the data object for example can be net purchase platform (such as Jingdone district net purchase platform, Amazon net purchase
Platform etc.) on the good commodity specified or the service for preparing to urge pin of planning.So, in advance by predictable hyperpyrexia degrees of data object
(data object for both having reached presupposed information heat degree threshold), which is put into caching, can improve the hit rate of caching.Certainly, it is above-mentioned to be only
Illustrated by taking the shopping scene of net purchase platform as an example, without constituting its limitation, in the application other embodiment, for search
Other scenes such as scene, download scene are also applicable.
In another embodiment of the application, it is contemplated that non-designated data object is it could also be possible that hyperpyrexia degrees of data pair
As therefore, if it is confirmed that the data object in the response is not belonging to the specified data object, then can further obtain institute
State the heatrate value of the data object in response；
Then judge whether described information hot value reaches default heatrate threshold value；Described information hot value for example may be used
Think click hot value and/or search hot value etc.；
If described information hot value reaches described information heat degree threshold, confirm the data object in the response more
The new extremely caching, that is, confirm that its heatrate value reaches that the data object of presupposed information heat degree threshold is hyperpyrexia degrees of data pair
As, thus put it into caching in can improve the hit rate of caching；Otherwise, it is not high temperature data pair to confirm the data object
As caching need not be put it into.
In the embodiment of the present application, described information hot value can be calculated to obtain according to the temperature model built in advance,
Described temperature model can be a kind of heatrate computational algorithm, and the computational algorithm is for example by temperature affecting parameters
The heatrate value of data object is asked in the weighted sum of (access times etc.).
The embodiment of the present application specifies each the first of parameter value scope to specify parameter value by obtaining the first of caching
Corresponding cache hit rate, it is determined that wherein meeting the first specified parameter value corresponding to the cache hit rate of first condition, so
Specifying the first of parameter by the first of caching afterwards, to specify parameter value to be adjusted to the cache hit rate institute that this meets first condition right
First answered specifies parameter value；On this basis, each the second of parameter value scope is specified further through obtain caching second
The cache hit rate corresponding to parameter value is specified, it is determined that wherein meeting the second finger corresponding to the cache hit rate of second condition
Determine parameter value, then specify parameter by the second of caching second specifies parameter value to be adjusted to the caching for meeting second condition
Second corresponding to hit rate specifies parameter value, and first specifies parameter and second to specify parameter to be all important influence caching life
The parameter of middle rate, therefore, is adjusted to that compared with the figure of merit cache hit rate can be improved.
With reference to shown in Fig. 4, the buffer control device of the embodiment of the present application includes：
Span acquisition module 41, parameter value scope and the second specified parameter are specified available for obtain caching first
Span；
First hit rate acquisition module 42, available for obtain described first specify parameter value in the range of each first specify
Cache hit rate corresponding to parameter value, and determine wherein to meet the first specified ginseng corresponding to the cache hit rate of first condition
Numerical value；
First specifies parameter adjustment module 43, specifies the parameter value of parameter to be adjusted to institute available for by the first of the caching
State meet corresponding to the cache hit rate of first condition first specify parameter value；
Second hit rate acquisition module 44, available for obtain described second specify parameter value in the range of each second specify
Cache hit rate corresponding to parameter value, and determine wherein to meet the second specified ginseng corresponding to the cache hit rate of second condition
Numerical value；
Second specifies parameter adjustment module 45, specifies the parameter value of parameter to be adjusted to institute available for by the second of the caching
State meet corresponding to the cache hit rate of second condition second specify parameter value.
The buffer control device of the embodiment of the present application is corresponding with the buffer control method shown in above-mentioned Fig. 1, therefore, is related to
The details of the buffer control device of the embodiment of the present application, refers to the corresponding content of the buffer control method shown in above-mentioned Fig. 1.
The embodiment of the present application specifies each the first of parameter value scope to specify parameter value by obtaining the first of caching
Corresponding cache hit rate, it is determined that wherein meeting the first specified parameter value corresponding to the cache hit rate of first condition, so
Specifying the first of parameter by the first of caching afterwards, to specify parameter value to be adjusted to the cache hit rate institute that this meets first condition right
First answered specifies parameter value；On this basis, each the second of parameter value scope is specified further through obtain caching second
The cache hit rate corresponding to parameter value is specified, it is determined that wherein meeting the second finger corresponding to the cache hit rate of second condition
Determine parameter value, then specify parameter by the second of caching second specifies parameter value to be adjusted to the caching for meeting second condition
Second corresponding to hit rate specifies parameter value, and first specifies parameter and second to specify parameter to be all important influence caching life
The parameter of middle rate, therefore, is adjusted to that compared with the figure of merit cache hit rate can be improved.
With reference to shown in Fig. 5, the application system of the embodiment of the present application the embodiment of the present application can include processing in hardware view
Device, internal bus, memory and internal memory etc., are also possible that the hardware required for other business certainly.Processor is from memory
It is middle to read corresponding computer program into internal memory and then run, buffer control device is formed on logic level.Certainly, except
Outside software realization mode, the embodiment of the present application is not precluded from other implementations, such as logical device or software and hardware combining
Mode etc., that is to say, that the executive agent of following handling process is not limited to each logic unit or hardware
Or logical device.Wherein, memory, for memory buffers control device；The buffer control device is handled by the processor
When, it can perform following steps：
Obtain the first of caching and specify parameter value scope and the second specified parameter value scope；
The cache hit rate corresponding to each first specified parameter value in the range of the described first specified parameter value is obtained, and
It is determined that wherein meeting the first specified parameter value corresponding to the cache hit rate of first condition；
The parameter value for specifying parameter by the first of the caching is adjusted to the cache hit rate institute for meeting first condition
Corresponding first specifies parameter value；
The cache hit rate corresponding to each second specified parameter value in the range of the described second specified parameter value is obtained, and
It is determined that wherein meeting the second specified parameter value corresponding to the cache hit rate of second condition；
The parameter value for specifying parameter by the second of the caching is adjusted to the cache hit rate institute for meeting second condition
Corresponding second specifies parameter value.
In the embodiment of the present application, described application system can be any application system, for example, provide the net of shopping service
Purchasing platform (such as Jingdone district net purchase platform, Amazon net purchase platform), there is provided the search engine (such as hundred of the services such as inquiry, download
Degree search, Google search) there is provided payment transaction service Third-party payment platform etc. (for example wechat payment, Baidu's wallet,
PayPal, drawing OK a karaoke club etc.).
The embodiment of the present application specifies each the first of parameter value scope to specify parameter value by obtaining the first of caching
Corresponding cache hit rate, it is determined that wherein meeting the first specified parameter value corresponding to the cache hit rate of first condition, so
Specifying the first of parameter by the first of caching afterwards, to specify parameter value to be adjusted to the cache hit rate institute that this meets first condition right
First answered specifies parameter value；On this basis, each the second of parameter value scope is specified further through obtain caching second
The cache hit rate corresponding to parameter value is specified, it is determined that wherein meeting the second finger corresponding to the cache hit rate of second condition
Determine parameter value, then specify parameter by the second of caching second specifies parameter value to be adjusted to the caching for meeting second condition
Second corresponding to hit rate specifies parameter value, and first specifies parameter and second to specify parameter to be all important influence caching life
The parameter of middle rate, therefore, is adjusted to that the cache hit rate of application system can be improved compared with the figure of merit.And cache hit rate is carried
The high performance including response time and handling capacity etc. for lifting application system is highly beneficial.
Although procedures described above flow includes the multiple operations occurred with particular order, it should however be appreciated that understand,
These processes can include more or less operations, and these operations can sequentially be performed or performed parallel (such as using parallel
Processor or multi-thread environment).
In the 1990s, for a technology improvement can clearly distinguish be on hardware improvement (for example,
Improvement to circuit structures such as diode, transistor, switches) or software on improvement (for the improvement of method flow).So
And, with the development of technology, the improvement of current many method flows can be considered as directly improving for hardware circuit.
Designer nearly all obtains corresponding hardware circuit by the way that improved method flow is programmed into hardware circuit.Cause
This, it cannot be said that the improvement of a method flow cannot be realized with hardware entities module.For example, PLD
(Programmable Logic Device, PLD) (such as field programmable gate array (Field Programmable Gate
Array, FPGA)) it is exactly such a integrated circuit, its logic function is determined by user to device programming.By designer
Voluntarily programming comes a digital display circuit " integrated " on a piece of PLD, without asking chip maker to design and make
Special IC chip.Moreover, nowadays, substitution manually makes IC chip, and this programming is also used instead mostly " patrols
Volume compiler (logic compiler) " software realizes that software compiler used is similar when it writes with program development,
And the source code before compiling also write by handy specific programming language, this is referred to as hardware description language
(Hardware Description Language, HDL), and HDL is also not only a kind of, but have many kinds, such as ABEL
(Advanced Boolean Expression Language)、AHDL(Altera Hardware Description
Language)、Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL
(Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby
Hardware Description Language) etc., VHDL (Very-High-Speed are most generally used at present
Integrated Circuit Hardware Description Language) and Verilog.Those skilled in the art also should
This understands, it is only necessary to slightly programming in logic and be programmed into method flow in integrated circuit with above-mentioned several hardware description languages,
The hardware circuit for realizing the logical method flow can be just readily available.
Controller can be implemented in any suitable manner, for example, controller can take such as microprocessor or processing
Device and storage can by the computer of the computer readable program code (such as software or firmware) of (micro-) computing device
Read medium, gate, switch, application specific integrated circuit (Application Specific Integrated Circuit,
ASIC), the form of programmable logic controller (PLC) and embedded microcontroller, the example of controller includes but is not limited to following microcontroller
Device：ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, are deposited
Memory controller is also implemented as a part for the control logic of memory.It is also known in the art that except with
Pure computer readable program code mode is realized beyond controller, can be made completely by the way that method and step is carried out into programming in logic
Obtain controller and come real in the form of gate, switch, application specific integrated circuit, programmable logic controller (PLC) and embedded microcontroller etc.
Existing identical function.Therefore this controller is considered a kind of hardware component, and various for realizing to including in it
The device of function can also be considered as the structure in hardware component.Or even, can be by for realizing that the device of various functions is regarded
For that not only can be the software module of implementation method but also can be the structure in hardware component.
System, device, module or unit that above-described embodiment is illustrated, can specifically be realized by computer chip or entity,
Or realized by the product with certain function.It is a kind of typically to realize that equipment is computer.Specifically, computer for example may be used
Think personal computer, laptop computer, cell phone, camera phone, smart phone, personal digital assistant, media play
It is any in device, navigation equipment, electronic mail equipment, game console, tablet PC, wearable device or these equipment
The combination of equipment.
For convenience of description, it is divided into various units during description apparatus above with function to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during application.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and internal memory.
Internal memory potentially includes the volatile memory in computer-readable medium, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only storage (ROM) or flash memory (flash RAM).Internal memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moved
State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus
Or any other non-transmission medium, the information that can be accessed by a computing device available for storage.Define, calculate according to herein
Machine computer-readable recording medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
It should also be noted that, term " comprising ", "comprising" or its any other variant are intended to nonexcludability
Comprising so that process, method, commodity or equipment including a series of key elements are not only including those key elements, but also wrap
Include other key elements being not expressly set out, or also include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described
Also there is other identical element in process, method, commodity or the equipment of element.
It will be understood by those skilled in the art that embodiments herein can be provided as method, system or computer program product.
Therefore, the application can be using the embodiment in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Form.Deposited moreover, the application can use to can use in one or more computers for wherein including computer usable program code
The shape for the computer program product that storage media is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The application can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizes routine, program, object, the group of particular abstract data type
Part, data structure etc..The application can also be put into practice in a distributed computing environment, in these DCEs, by
Remote processing devices connected by communication network perform task.In a distributed computing environment, program module can be with
Positioned at including in the local and remote computer-readable storage medium including storage device.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for system
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
Embodiments herein is the foregoing is only, the application is not limited to.For those skilled in the art
For, the application can have various modifications and variations.It is all any modifications made within spirit herein and principle, equivalent
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (20)
1. a kind of buffer control method, it is characterised in that comprise the following steps：
Obtain the first of caching and specify parameter value scope and the second specified parameter value scope；
The cache hit rate corresponding to each first specified parameter value in the range of the described first specified parameter value is obtained, and is determined
Wherein meet first corresponding to the cache hit rate of first condition and specify parameter value；
Specify the parameter value of parameter to be adjusted to described by the first of the caching to meet corresponding to the cache hit rate of first condition
First specify parameter value；
The cache hit rate corresponding to each second specified parameter value in the range of the described second specified parameter value is obtained, and is determined
Wherein meet second corresponding to the cache hit rate of second condition and specify parameter value；
Specify the parameter value of parameter to be adjusted to described by the second of the caching to meet corresponding to the cache hit rate of second condition
Second specify parameter value.
2. buffer control method according to claim 1, it is characterised in that described first, which specifies parameter to include caching, holds
Amount, described second specifies parameter to include the caching term of validity.
3. buffer control method according to claim 1, it is characterised in that the first of the acquisition caching specifies parameter to take
It is worth scope and the second specified parameter value scope, is performed when receiving timing buffer control task.
4. buffer control method according to claim 1, it is characterised in that the first of the acquisition caching specifies parameter to take
It is worth scope and second specifies parameter value scope, is to receive timing buffer control task and the current portfolio of system is less than
Performed during predetermined threshold value.
5. buffer control method according to claim 1, it is characterised in that parameter value is specified in the acquisition described first
In the range of each first specify cache hit rate corresponding to parameter value, and determine wherein to meet the cache hit rate of first condition
Corresponding first specifies parameter value, including：
Determine that described first specifies and the first of correspondence cache hit rate is not present in the range of parameter value specifies parameter value, constitute the
One specifies set of parameter values；
One first, which is taken out, from the described first specified set of parameter values specifies parameter value；
The parameter value for specifying parameter by the first of the caching is adjusted to the first specified parameter value；
The cache hit rate under the first specified parameter value is buffered in described in obtaining；
By that analogy, until getting the caching in the described first specified set of parameter values corresponding to each first specified parameter value
Untill hit rate；
The cache hit rate in the range of parameter value corresponding to each first specified parameter value is specified to be ranked up by described first,
Parameter value is specified to determine wherein to meet first corresponding to the cache hit rate of first condition.
6. buffer control method according to claim 1, it is characterised in that parameter value is specified in the acquisition described second
In the range of each second specify cache hit rate corresponding to parameter value, and determine wherein to meet the cache hit rate of second condition
Corresponding second specifies parameter value, including：
Determine that described second specifies and the second of correspondence cache hit rate is not present in the range of parameter value specifies parameter value, constitute the
Two specify set of parameter values；
One second, which is taken out, from the described second specified set of parameter values specifies parameter value；
The parameter value for specifying parameter by the second of the caching is adjusted to the second specified parameter value；
The cache hit rate under the second specified parameter value is buffered in described in obtaining；
By that analogy, until getting the caching in the described second specified set of parameter values corresponding to each second specified parameter value
Untill hit rate；
The cache hit rate in the range of parameter value corresponding to each second specified parameter value is specified to be ranked up by described second,
Parameter value is specified to determine wherein to meet second corresponding to the cache hit rate of second condition.
7. buffer control method according to claim 1, it is characterised in that the caching includes local cache and distribution
Any one in caching.
8. buffer control method according to claim 1, it is characterised in that described first specifies each in the range of parameter value
Individual first specifies the cache hit rate corresponding to parameter value, is counted under same buffered hit rate measurement period.
9. the buffer control method according to claim 1 or 8, it is characterised in that described second specifies parameter value scope
Cache hit rate corresponding to each interior second specified parameter value, is counted under same buffered hit rate measurement period.
10. buffer control method according to claim 1, it is characterised in that also include：
In advance specified data object is put into the caching, and the caching term of validity of the specified data object is set to never
Failure；
It is corresponding, after the response for access request is received, confirm whether the data object in the response belongs to the finger
Determine data object；
If it is confirmed that the data object in the response belongs to the specified data object, then by the data object in the response
It is updated to the caching.
11. buffer control method according to claim 10, it is characterised in that the caching is cached including map；
Corresponding, the caching term of validity to the specified data object is set to never fail, and specifically includes：
The term of validity to key values corresponding to the specified data object is set to never fail.
12. buffer control method according to claim 10, it is characterised in that also include：
If it is confirmed that the data object in the response is not belonging to the specified data object, then the data in the response are obtained
The heatrate value of object；
Judge whether described information hot value reaches default heatrate threshold value；
If described information hot value reaches described information heat degree threshold, the data object in the response is updated to described
Caching.
13. buffer control method according to claim 12, it is characterised in that described information hot value includes：Click on heat
Angle value and/or search hot value.
14. the buffer control method according to claim 11 to 13 any one, it is characterised in that the specified data pair
As including：The commodity specified or service.
15. a kind of buffer control device, it is characterised in that including：
Span acquisition module, parameter value scope and the second specified parameter value model are specified for obtaining the first of caching
Enclose；
First hit rate acquisition module, each first specified parameter value institute in the range of parameter value is specified for obtaining described first
Corresponding cache hit rate, and determine wherein to meet the first specified parameter value corresponding to the cache hit rate of first condition；
First specifies parameter adjustment module, and the parameter value for specifying parameter by the first of the caching is adjusted to described and meets the
First corresponding to the cache hit rate of one condition specifies parameter value；
Second hit rate acquisition module, each second specified parameter value institute in the range of parameter value is specified for obtaining described second
Corresponding cache hit rate, and determine wherein to meet the second specified parameter value corresponding to the cache hit rate of second condition；
Second specifies parameter adjustment module, and the parameter value for specifying parameter by the second of the caching is adjusted to described and meets the
Second corresponding to the cache hit rate of two conditions specifies parameter value.
16. buffer control device according to claim 15, it is characterised in that described first, which specifies parameter to include caching, holds
Amount, described second specifies parameter to include the caching term of validity.
17. buffer control device according to claim 15, it is characterised in that described first specifies parameter to include being cached with
The effect phase, described second specifies parameter to include buffer memory capacity.
18. buffer control device according to claim 15, it is characterised in that the first of the acquisition caching specifies parameter
Span and the second specified parameter value scope, are performed when receiving timing buffer control task.
19. buffer control device according to claim 15, it is characterised in that the first of the acquisition caching specifies parameter
Span and second parameter value scope is specified, be to receive timing buffer control task and the current portfolio of system is low
Performed when predetermined threshold value.
20. a kind of application system, it is characterised in that including：
Processor；
Memory, for memory buffers control device；
Wherein, when the buffer control device is handled by the processor, following steps are performed：
Obtain the first of caching and specify parameter value scope and the second specified parameter value scope；
The cache hit rate corresponding to each first specified parameter value in the range of the described first specified parameter value is obtained, and is determined
Wherein meet first corresponding to the cache hit rate of first condition and specify parameter value；
Specify the parameter value of parameter to be adjusted to described by the first of the caching to meet corresponding to the cache hit rate of first condition
First specify parameter value；
The cache hit rate corresponding to each second specified parameter value in the range of the described second specified parameter value is obtained, and is determined
Wherein meet second corresponding to the cache hit rate of second condition and specify parameter value；
Specify the parameter value of parameter to be adjusted to described by the second of the caching to meet corresponding to the cache hit rate of second condition
Second specify parameter value.
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| CN201710069505.7A CN107038127A (en) | 2017-02-08 | 2017-02-08 | Application system and its buffer control method and device |
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