CN108574853A - A kind of content of TV program caching method, device and computer storage media - Google Patents
A kind of content of TV program caching method, device and computer storage media Download PDFInfo
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- CN108574853A CN108574853A CN201810368969.2A CN201810368969A CN108574853A CN 108574853 A CN108574853 A CN 108574853A CN 201810368969 A CN201810368969 A CN 201810368969A CN 108574853 A CN108574853 A CN 108574853A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/23106—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving caching operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26258—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention is suitable for software field, provides a kind of content of TV program caching method, device and computer storage media, method and includes：Obtain content of TV program to be cached；Obtain current cache space；If current cache space cannot accommodate content of TV program to be cached, with regard to obtaining the content name of content of TV program to be cached；In the content of TV program table to prestore, the content name of acquisition is matched with the content name cached；If matching is unsuccessful, time interval, the request number of times of the content of TV program cached are just obtained；Model, the time interval of the content of TV program cached, request number of times are generated using preset content temperature, generate the corresponding content temperature of content of TV program cached；Obtain the corresponding content of TV program of minimum contents temperature；Content of TV program to be cached is replaced into the corresponding content of TV program of minimum contents temperature.The caching that the present invention is conducive to improve content of TV program replaces effect.
Description
Technical field
The invention belongs to a kind of software field more particularly to content of TV program caching method, device and computer storages
Medium.
Background technology
Content of TV program refers to the works content that TV station propagates by being loaded with the signal of sound, image.In order to allow user
Content of TV program is quickly got, content of TV program is cached to the NDN cache nodes of name data network by TV station
On, and the spatial cache of NDN cache nodes is smaller, needs in time to be replaced content of TV program, it is slow to make full use of
Deposit space.
However, existing content of TV program caching method, Consideration is relatively simple, is unfavorable for improving content of TV program
Caching replace effect.The reason is that the replacement policy that existing content of TV program caching method is commonly used has：Recently most
It is few to use strategy, strategy be least commonly used and Size strategies.It is minimum to use strategy to least recently used TV programme
Content is replaced, and the minimum frequency of use strategy content of TV program few to frequency of use is replaced, Size policy replacements
Fall maximum content of TV program.The main problem of these typical cache replacement policies is that Consideration is relatively simple, is being considered
Certain limitation is still had on the problems such as temperature before the content of TV program that caches recently, content of TV program, it is difficult to be obtained
Preferable caching replaces effect.
Invention content
In view of this, an embodiment of the present invention provides the storages of a kind of content of TV program caching method, device and computer
Medium, the caching to improve content of TV program replace effect.
The first aspect of the embodiment of the present invention provides a kind of content of TV program caching method, including：
NDN cache nodes obtain content of TV program to be cached by NDN networks, in the TV programme to be cached
Include content name and content asset file in appearance, the channel designation of TV programme is configured in the content asset file, is regarded
Frequency and audio；
Obtain current cache space；
If the current cache space cannot accommodate the content of TV program to be cached, just wait caching described in acquisition
Content of TV program content name；
In the content of TV program table to prestore, the content name of acquisition is matched with the content name cached；
If matching is unsuccessful, time interval, the request number of times of the content of TV program cached are just obtained；
Model, the time interval of the content of TV program cached, request time are generated using preset content temperature
It counts, the corresponding content temperature of content of TV program cached described in generation；
The content temperature is ranked up, minimum contents temperature is obtained；
In the content of TV program cached, the corresponding content of TV program of minimum contents temperature is obtained；
Whether detection current time gets user's request that the minimal cache is worth corresponding content of TV program, such as
Fruit current time, the user for not getting the corresponding content of TV program of the minimum contents temperature ask, described in expression most
The corresponding content of TV program of small content temperature is not at solicited status, and the content of TV program to be cached is replaced institute
State the corresponding content of TV program of minimum contents temperature；
Wherein, the content temperature generation model is specially：
Wherein, Hoti[c] is indicated in period c, the content temperature of the content of TV program i cached；I expressions have cached
Content of TV program serial number, i value ranges be 1 to N, N is the total number of the content of TV program cached；Hoti[c-
1] it indicated at a upper period of period c, the content temperature of the content of TV program i cached；It is proportionality coefficient,Ratio of the content temperature of a cycle shared by current period in expression；Requesti[c] is indicated in the period
When c, the request number of times of the content of TV program i cached；It indicates in the c in the period, has cached
The sum of request number of times of content of TV program, t1 indicate that current time, ti indicate the time of the content of TV program i cached
Stamp, the timestamp be exactly at the time of generating the content of TV program i, | t1-ti | indicate the content of TV program i cached
Time interval,Probability is asked for time interval, for describing variation with time interval, in TV programme
Hold the probability that i is requested by a user.
As a kind of realization method of the present embodiment, in the content of TV program caching method, the NDN cache nodes
Content of TV program to be cached is obtained by NDN networks, specially：
NDN cache nodes extract cache tag position by NDN network received data packets in the data packet；
Judge whether the value of the cache tag position is 1；
If the value of the cache tag position is 1, just in the data packet, content of TV program to be cached is obtained.
As a kind of realization method of the present embodiment, in the content of TV program caching method, the NDN cache nodes
Content of TV program to be cached is obtained by NDN networks, specially：
NDN cache nodes extract cache tag position by NDN network received data packets in the data packet；
Judge whether the value of the cache tag position is 0；
If the value of the cache tag position is 0, just in the data packet, content of TV program to be cached is obtained.
As a kind of realization method of the present embodiment, in the content of TV program caching method, if described work as
Preceding spatial cache cannot accommodate the content of TV program to be cached, the content of content of TV program to be cached described in acquisition
Name, specially：
If the current cache space cannot accommodate the content of TV program to be cached, the TV cached is obtained
Minimum cache-time of the programme content in current cache space；
Judge whether the minimum cache-time is more than 35 seconds；
If the minimum cache-time is more than 35 seconds, with regard to the content name of content of TV program to be cached described in acquisition.
As a kind of realization method of the present embodiment, in the content of TV program caching method, if described work as
Preceding spatial cache cannot accommodate the content of TV program to be cached, and obtain the content of TV program cached in current cache
Minimum cache-time in space, specially：
If the current cache space cannot accommodate the content of TV program to be cached, the TV cached is obtained
Cache-time of the programme content in current cache space；
The cache-time is ranked up, according to ranking results, the content of TV program cached is obtained and delays currently
Deposit the minimum cache-time in space.
The second aspect of the embodiment of the present invention provides a kind of content of TV program buffer storage, including：
Content of TV program acquisition module, it is described to wait delaying for obtaining content of TV program to be cached by NDN networks
Include content name and content asset file in the content of TV program deposited, TV programme are configured in the content asset file
Channel designation, video and audio；
Current cache space acquisition module, for obtaining current cache space；
Content name acquisition module, if cannot be accommodated in the TV programme to be cached for the current cache space
Hold, just the content name of content of TV program to be cached described in acquisition；
Matching module, in the content of TV program table to prestore, by the content name of acquisition and the content name cached
It is matched；
First acquisition module, if for matching it is unsuccessful, just obtain the content of TV program cached time interval,
Request number of times；
Content temperature generation module, for generating model, the TV programme cached using preset content temperature
Time interval, the request number of times of content, generate described in the corresponding content temperature of content of TV program that has cached；
Minimum contents temperature acquisition module obtains minimum contents temperature for being ranked up to the content temperature；
Second acquisition module, in the content of TV program cached, it is corresponding to obtain minimum contents temperature
Content of TV program；
Content of TV program cache module, for detecting current time, whether to get minimal cache value corresponding
The user of content of TV program asks, if current time, does not get the corresponding TV programme of the minimum contents temperature
The user of content asks, and indicates that the corresponding content of TV program of the minimum contents temperature is not at solicited status, is waited for described
The content of TV program of caching replaces the corresponding content of TV program of the minimum contents temperature；
Wherein, the content temperature generation model is specially：
Wherein, Hoti[c] is indicated in period c, the content temperature of the content of TV program i cached；I expressions have cached
Content of TV program serial number, i value ranges be 1 to N, N is the total number of the content of TV program cached；Hoti[c-
1] it indicated at a upper period of period c, the content temperature of the content of TV program i cached；It is proportionality coefficient,Ratio of the content temperature of a cycle shared by current period in expression；Requesti[c] is indicated in the period
When c, the request number of times of the content of TV program i cached；It indicates in the c in the period, has cached
The sum of request number of times of content of TV program, t1 indicate that current time, ti indicate the time of the content of TV program i cached
Stamp, the timestamp be exactly at the time of generating the content of TV program i, | t1-ti | indicate the content of TV program i cached
Time interval,Probability is asked for time interval, for describing variation with time interval, in TV programme
Hold the probability that i is requested by a user.
As a kind of realization method of the present embodiment, in the content of TV program buffer storage, in the TV programme
Hold acquisition module to be specifically used for：
By NDN network received data packets, cache tag position is extracted in the data packet；
Judge whether the value of the cache tag position is 1；
If the value of the cache tag position is 1, just in the data packet, content of TV program to be cached is obtained；
Alternatively, the content of TV program acquisition module is specifically used for：
By NDN network received data packets, cache tag position is extracted in the data packet；
Judge whether the value of the cache tag position is 0；
If the value of the cache tag position is 0, just in the data packet, content of TV program to be cached is obtained.
As a kind of realization method of the present embodiment, in the content of TV program buffer storage, the content name obtains
Module is specifically used for：
If the current cache space cannot accommodate the content of TV program to be cached, the TV cached is obtained
Minimum cache-time of the programme content in current cache space；
Judge whether the minimum cache-time is more than 35 seconds；
If the minimum cache-time is more than 35 seconds, with regard to the content name of content of TV program to be cached described in acquisition；
Wherein, it if current cache space cannot accommodate the content of TV program to be cached, obtains
Minimum cache-time of the content of TV program of caching in current cache space, specially：
If the current cache space cannot accommodate the content of TV program to be cached, the TV cached is obtained
Cache-time of the programme content in current cache space；
The cache-time is ranked up, according to ranking results, the content of TV program cached is obtained and delays currently
Deposit the minimum cache-time in space.
The third aspect of the embodiment of the present invention provides a kind of content of TV program buffer storage, including memory, processing
Device and it is stored in the computer program that can be run in the memory and on the processor, described in the processor executes
The step of above method is realized when computer program.
The fourth aspect of the embodiment of the present invention provides a kind of computer storage media, the computer storage media storage
The step of having computer program, the above method is realized when the computer program is executed by processor.
Existing advantageous effect is the embodiment of the present invention compared with prior art：
When the request frequency of content of TV program is identical, the content of TV program for jumping time interval length is preferentially replaced,
The short content of TV program in retention time interval, the short content of TV program of time interval is exactly in the TV programme cached recently
Hold, and therefore the content of TV program that the preference request of request of data node caches recently can improve cache hit rate, be conducive to
The caching for improving content of TV program replaces effect.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment for those of ordinary skill in the art without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of implementation flow chart of content of TV program caching method provided in an embodiment of the present invention；
Fig. 2 is a kind of structure diagram of content of TV program buffer storage provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of content of TV program buffer storage provided in an embodiment of the present invention.
Specific implementation mode
In being described below, for illustration and not for limitation, it is proposed that such as tool of particular system structure, technology etc
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
It should be appreciated that ought use in this specification and in the appended claims, the instruction of term " comprising " is described special
Sign, entirety, step, operation, the presence of element and/or component, but be not precluded one or more of the other feature, entirety, step,
Operation, element, component and/or its presence or addition gathered.
It is also understood that the term used in this description of the invention is merely for the sake of the mesh for describing specific embodiment
And be not intended to limit the present invention.As description of the invention and it is used in the attached claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singulative, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is
Refer to any combinations and all possible combinations of one or more of associated item listed, and includes these combinations.
As used in this specification and in the appended claims, term " if " can be according to context quilt
Be construed to " when ... " or " once " or " in response to determination " or " in response to detecting ".Similarly, phrase " if it is determined that " or
" if detecting [described condition or event] " can be interpreted to mean according to context " once it is determined that " or " in response to true
It is fixed " or " once detecting [described condition or event] " or " in response to detecting [described condition or event] ".
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Embodiment one
With reference to figure 1, Fig. 1 is a kind of implementation flow chart of content of TV program caching method provided in an embodiment of the present invention,
This method is applied to terminal device, and a kind of content of TV program caching method may comprise steps of as shown in Figure 1：
S101, NDN cache node obtain content of TV program to be cached, the TV to be cached by NDN networks
Include content name and content asset file in programme content, the channel name of TV programme is configured in the content asset file
Title, video and audio；
NDN cache nodes extract cache tag position by NDN network received data packets in the data packet；
Judge whether the value of the cache tag position is 0 or 1；
If the value of the cache tag position is 0 or 1, just in the data packet, obtain in TV programme to be cached
Hold.
Wherein, data packet carries cache tag position, content of TV program, using NDN agreements to resolve packet, you can
Extract cache tag position, content of TV program.NDN agreements are the prior art, and this will not be repeated here.
S102 obtains current cache space；
S103, if the current cache space cannot accommodate the content of TV program to be cached, just described in acquisition
The content name of content of TV program to be cached；
S104 matches the content name of acquisition with the content name cached in the content of TV program table to prestore；
Wherein, content of TV program table includes the content name cached, and the content name each cached has only corresponded to one
The content of TV program of caching.
S105 just obtains time interval, the request number of times of the content of TV program cached if matching is unsuccessful；
If matching is unsuccessful, indicates that identical content name is not present in content of TV program table, cannot directly replace and delay
The content of TV program deposited needs the time interval, the request number of times that obtain the content of TV program cached.
If successful match, indicate that there are identical content names in content of TV program table, can directly replace identical content name
The corresponding content of TV program cached needs the time interval, the request number of times that obtain the content of TV program cached.
S106, using preset content temperature generate model, the content of TV program cached time interval, ask
Ask number, the corresponding content temperature of content of TV program cached described in generation；
S107 is ranked up the content temperature, obtains minimum contents temperature；
S108 obtains the corresponding content of TV program of minimum contents temperature in the content of TV program cached；
S109, whether detection current time, which gets the minimal cache, is worth the user of corresponding content of TV program and asks
It asks, if current time, does not get user's request of the corresponding content of TV program of the minimum contents temperature, indicate institute
It states the corresponding content of TV program of minimum contents temperature and is not at solicited status, the content of TV program to be cached is replaced
Fall the corresponding content of TV program of the minimum contents temperature；
Wherein, the content temperature generation model is specially：
Wherein, Hoti[c] is indicated in period c, the content temperature of the content of TV program i cached；I expressions have cached
Content of TV program serial number, i value ranges be 1 to N, N is the total number of the content of TV program cached；Hoti[c-
1] it indicated at a upper period of period c, the content temperature of the content of TV program i cached；It is proportionality coefficient,Ratio of the content temperature of a cycle shared by current period in expression；Requesti[c] is indicated in the period
When c, the request number of times of the content of TV program i cached；It indicates in the c in the period, has cached
The sum of request number of times of content of TV program, t1 indicate that current time, ti indicate the time of the content of TV program i cached
Stamp, the timestamp be exactly at the time of generating the content of TV program i, | t1-ti | indicate the content of TV program i cached
Time interval,Probability is asked for time interval, for describing variation with time interval, in TV programme
Hold the probability that i is requested by a user.
Wherein, whether detection current time, which gets the minimal cache and be worth the user of corresponding content of TV program, is asked
It asks, if current time, does not get user's request of the corresponding content of TV program of the minimum contents temperature, indicate institute
It states the corresponding content of TV program of minimum contents temperature and is not at solicited status, the content of TV program to be cached is replaced
Fall the corresponding content of TV program of the minimum contents temperature, if current time, gets the minimum contents temperature and correspond to
Content of TV program user request, indicate that the corresponding content of TV program of the minimum contents temperature is in solicited status,
After waiting for the corresponding content of TV program request of the minimum contents temperature, the content of TV program to be cached is replaced
Fall the corresponding content of TV program of the minimum contents temperature, what is generated in this way has the technical effect that：It avoids and interrupts the minimum
The user of the corresponding content of TV program of content temperature asks, since the user of content of TV program will not be caused to ask to interrupt,
Therefore be conducive to enhance the stability of user's request of content of TV program.
Wherein, on the head of the content of TV program i cached, content of TV program i timestamps, the timestamp are obtained
At the time of exactly generating the content of TV program i.
Wherein, NDN cache nodes are the cache node named in data network NDN.
Wherein,Probability is asked for time interval, for describing the variation with time interval, TV programme
The probability that content is requested by a user.Wherein, time interval refer to current time and generate content of TV program at the time of between when
Between it is poor.Because of the content of TV program that the preference request of request of data node caches recently, time interval is shorter, in TV programme
It is bigger to hold the probability being requested by a user.
Wherein, model is generated it is found that Hot from content temperatureiWithIt is proportional relationship, when in TV programme
When the request frequency of appearance is identical, content temperature is also bigger, is subsequently ranked up to content temperature, obtains minimum contents temperature,
The corresponding content of TV program of minimum contents temperature is obtained, content of TV program to be cached is replaced into minimum contents temperature pair
The content of TV program answered, what can be generated has the technical effect that：The short content of TV program in retention time interval, time interval are short
Content of TV program is exactly the content of TV program cached recently, and the TV Festival that the preference request of request of data node caches recently
Therefore mesh content can improve cache hit rate, the caching for being conducive to improve content of TV program replaces effect.
Wherein, HotiAnd Hoti[c-1]、It is positive correlation, which generates model and consider
Before content temperature and current period request number of times, and the time is more long, influence it is smaller, such computational methods are preferably
The content temperature for embodying content of TV program adapts to the dynamic change of content of TV program request.
Wherein, the download temperature for the content of TV program that content temperature is used to describe to have cached.
Wherein, after S109, a kind of content of TV program caching method further includes：
In the caching remaining time field of the content of TV program to be cached, residual cache time is written, when surplus
When remaining cache-time is less than 35 seconds, which can be replaced.
In embodiments of the present invention, when the request frequency of content of TV program is identical, it is long preferentially to replace time interval
Content of TV program, the short content of TV program in retention time interval, the short content of TV program of time interval is exactly nearest
The content of TV program of caching avoids the content of TV program that occurs replacing and cache recently, reduces the feelings of cache hit rate
Condition, therefore cache hit rate can be improved, the caching for being conducive to improve content of TV program replaces effect.
Embodiment two
Corresponding to the method described in foregoing embodiments one, with reference to figure 2, Fig. 2 is a kind of TV provided in an embodiment of the present invention
The structure diagram of programme content buffer storage, is applied to terminal device, and terminal device includes but not limited to NDN cache nodes, meter
Calculation machine.For purposes of illustration only, only the parts related to this embodiment are shown.For convenience of description, it illustrates only and the present embodiment
Relevant part.
With reference to Fig. 2, which includes：
Content of TV program acquisition module 21, it is described to wait for for obtaining content of TV program to be cached by NDN networks
Include content name and content asset file in the content of TV program of caching, TV Festival is configured in the content asset file
Purpose channel designation, video and audio；
Current cache space acquisition module 22, for obtaining current cache space；
Content name acquisition module 23, if the TV programme to be cached cannot be accommodated for the current cache space
Content, with regard to the content name of content of TV program to be cached described in acquisition；
Matching module 24, in the content of TV program table to prestore, by the content name of acquisition and the content cached
Name is matched；
First acquisition module 25, if unsuccessful for matching, between the time for just obtaining the content of TV program cached
Every, request number of times；
Content temperature generation module 26, for generating model, the TV Festival cached using preset content temperature
Time interval, the request number of times of mesh content, generate described in the corresponding content temperature of content of TV program that has cached；
Minimum contents temperature acquisition module 27 obtains minimum contents temperature for being ranked up to the content temperature；
Second acquisition module 28 is corresponded in the content of TV program cached, obtaining minimum contents temperature
Content of TV program；
Content of TV program cache module 29, for detecting whether current time gets the minimal cache value correspondence
Content of TV program user request, if current time, do not get the corresponding TV Festival of the minimum contents temperature
The user of mesh content asks, and indicates that the corresponding content of TV program of the minimum contents temperature is not at solicited status, will be described
Content of TV program to be cached replaces the corresponding content of TV program of the minimum contents temperature；
Wherein, the content temperature generation model is specially：
Wherein, Hoti[c] is indicated in period c, the content temperature of the content of TV program i cached；I expressions have cached
Content of TV program serial number, i value ranges be 1 to N, N is the total number of the content of TV program cached；Hoti[c-
1] it indicated at a upper period of period c, the content temperature of the content of TV program i cached；It is proportionality coefficient,Ratio of the content temperature of a cycle shared by current period in expression；Requesti[c] is indicated in the period
When c, the request number of times of the content of TV program i cached；It indicates in the c in the period, has cached
The sum of request number of times of content of TV program, t1 indicate that current time, ti indicate the time of the content of TV program i cached
Stamp, the timestamp be exactly at the time of generating the content of TV program i, | t1-ti | indicate the content of TV program i cached
Time interval,Probability is asked for time interval, for describing variation with time interval, in TV programme
Hold the probability that i is requested by a user.
As a kind of realization method of the present embodiment, in the content of TV program buffer storage, in the TV programme
Hold acquisition module to be specifically used for：
By NDN network received data packets, cache tag position is extracted in the data packet；
Judge whether the value of the cache tag position is 1；
If the value of the cache tag position is 1, just in the data packet, content of TV program to be cached is obtained；
Alternatively, the content of TV program acquisition module is specifically used for：
By NDN network received data packets, cache tag position is extracted in the data packet；
Judge whether the value of the cache tag position is 0；
If the value of the cache tag position is 0, just in the data packet, content of TV program to be cached is obtained.
As a kind of realization method of the present embodiment, in the content of TV program buffer storage, the content name obtains
Module is specifically used for：
If the current cache space cannot accommodate the content of TV program to be cached, the TV cached is obtained
Minimum cache-time of the programme content in current cache space；
Judge whether the minimum cache-time is more than 35 seconds；
If the minimum cache-time is more than 35 seconds, with regard to the content name of content of TV program to be cached described in acquisition；
Wherein, it if current cache space cannot accommodate the content of TV program to be cached, obtains
Minimum cache-time of the content of TV program of caching in current cache space, specially：
If the current cache space cannot accommodate the content of TV program to be cached, the TV cached is obtained
Cache-time of the programme content in current cache space；
The cache-time is ranked up, according to ranking results, the content of TV program cached is obtained and delays currently
Deposit the minimum cache-time in space.
In embodiments of the present invention, when the request frequency of content of TV program is identical, it is long preferentially to replace time interval
Content of TV program, the short content of TV program in retention time interval, the short content of TV program of time interval is exactly nearest
The content of TV program of caching avoids the content of TV program that occurs replacing and cache recently, reduces the feelings of cache hit rate
Condition, therefore cache hit rate can be improved, the caching for being conducive to improve content of TV program replaces effect.
Embodiment three
Fig. 3 is a kind of schematic diagram of content of TV program buffer storage provided in an embodiment of the present invention.As shown in figure 3, should
A kind of content of TV program buffer storage 3 of embodiment includes：Processor 30, memory 31 and it is stored in the memory 31
In and the computer program 32 that can be run on the processor 30, such as a kind of content of TV program cache program.The place
Reason device 30 realizes the step in a kind of above-mentioned each content of TV program caching method embodiment when executing the computer program 32
Suddenly.
Illustratively, the computer program 32 can be divided into one or more module/units, it is one or
Multiple module/units are stored in the memory 31, and are executed by the processor 30, to complete the present invention.Described one
A or multiple module/units can be the series of computation machine program instruction section that can complete specific function, which is used for
Implementation procedure of the computer program 32 in a kind of content of TV program buffer storage 3 is described.
A kind of content of TV program buffer storage 3 can be the computing devices such as NDN cache nodes, computer.It is described
A kind of content of TV program buffer storage may include, but be not limited only to, processor 30, memory 31.
It will be understood by those skilled in the art that Fig. 3 is only a kind of example of content of TV program buffer storage 3, not
The restriction to a kind of content of TV program buffer storage 3 is constituted, may include than illustrating more or fewer components, or combination
Certain components or different components, such as a kind of content of TV program buffer storage can also be set including input and output
Standby, network access equipment, bus etc..
Alleged processor 30 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor can also be any conventional processor
Deng.
The memory 31 can be a kind of internal storage unit of content of TV program buffer storage 3, such as one
The hard disk or memory of kind content of TV program buffer storage 3.The memory 31 can also be a kind of content of TV program
The plug-in type hard disk being equipped on the External memory equipment of buffer storage 3, such as a kind of content of TV program buffer storage 3,
Intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card (Flash
Card) etc..Further, the memory 31 can also both include a kind of inside of content of TV program buffer storage 3
Storage unit also includes External memory equipment.The memory 31 is for storing the computer program and a kind of TV
Other programs needed for programme content buffer storage and data.The memory 31 can be also used for temporarily storing and export
Or the data that will be exported.It is apparent to those skilled in the art that for convenience of description and succinctly, only
With the division progress of above-mentioned each functional unit, module for example, in practical application, above-mentioned function can be divided as needed
With by different functional units, module completion, i.e., the internal structure of described device is divided into different functional units or module,
To complete all or part of the functions described above.Each functional unit, module in embodiment can be integrated in a processing
Can also be that each unit physically exists alone in unit, can also during two or more units are integrated in one unit,
The form that hardware had both may be used in above-mentioned integrated unit is realized, can also be realized in the form of SFU software functional unit.In addition,
Each functional unit, module specific name also only to facilitate mutually distinguish, the protection domain being not intended to limit this application.
The specific work process of unit in above system, module, can refer to corresponding processes in the foregoing method embodiment, herein no longer
It repeats.
A kind of computer storage media is provided in another embodiment of the invention, and the computer storage media is stored with
Computer program, the computer program realize that a kind of above-mentioned each content of TV program caching method is real when being executed by processor
Apply the step in example.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, depends on the specific application and design constraint of technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the module or unit,
Only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can be with
In conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING of device or unit or
Communication connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can be stored in a computer read/write memory medium.Based on this understanding, the present invention realizes above-mentioned implementation
All or part of flow in example method, can also instruct relevant hardware to complete, the meter by computer program
Calculation machine program can be stored in a computer storage media, and the computer program is when being executed by processor, it can be achieved that above-mentioned each
The step of a embodiment of the method..Wherein, the computer program includes computer program code, the computer program code
Can be source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium can
To include：Can carry the computer program code any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic disc,
CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random
Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that the computer
The video that readable medium includes can carry out increase and decrease appropriate according to legislation in jurisdiction and the requirement of patent practice, such as
In certain jurisdictions, according to legislation and patent practice, computer-readable medium is including being electric carrier signal and telecommunications letter
Number.
Described device can be the computing devices such as desktop PC, notebook, palm PC and cloud server.It is described
Device may include, but be not limited only to, processor, memory.It will be understood by those skilled in the art that the schematic diagram is only to fill
The example set, the not restriction of structure twin installation may include than illustrating more or fewer components, or the certain portions of combination
Part or different components, such as described device can also include input-output equipment, network access equipment, bus etc..
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor can also be any conventional processor
Deng the processor is the control centre of described device, utilizes the various pieces of various interfaces and connection whole device.
The memory can be used for storing the computer program and/or module, and the processor is by running or executing
Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization
The various functions of device.The memory can include mainly storing program area and storage data field, wherein storing program area can deposit
Store up the application program (such as sound-playing function, image player function etc.) etc. needed for operating system, at least one function；Storage
Data field can be stored uses created data (such as audio data, phone directory etc.) etc. according to mobile phone.In addition, memory can
Can also include nonvolatile memory, such as hard disk, memory, plug-in type hard disk, intelligence to include high-speed random access memory
Energy storage card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card (Flash
Card), at least one disk memory, flush memory device or other volatile solid-state parts.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to aforementioned reality
Applying example, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each
Technical solution recorded in embodiment is modified or equivalent replacement of some of the technical features；And these are changed
Or replace, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of content of TV program caching method, which is characterized in that including：
NDN cache nodes obtain content of TV program to be cached by NDN networks, in the content of TV program to be cached
Include content name and content asset file, the channel designation, video in the content asset file configured with TV programme with
And audio；
Obtain current cache space；
If the current cache space cannot accommodate the content of TV program to be cached, with regard to electricity to be cached described in acquisition
Depending on the content name of programme content；
In the content of TV program table to prestore, the content name of acquisition is matched with the content name cached；
If matching is unsuccessful, time interval, the request number of times of the content of TV program cached are just obtained；
Time interval, the request number of times of model, the content of TV program cached are generated using preset content temperature, it is raw
At the corresponding content temperature of the content of TV program cached；
The content temperature is ranked up, minimum contents temperature is obtained；
In the content of TV program cached, the corresponding content of TV program of minimum contents temperature is obtained；
Whether detection current time gets user's request that the minimal cache is worth corresponding content of TV program, if worked as
The preceding moment does not get user's request of the corresponding content of TV program of the minimum contents temperature, indicates in the minimum
Hold the corresponding content of TV program of temperature and be not at solicited status, by the content of TV program to be cached replace it is described most
The corresponding content of TV program of small content temperature；
Wherein, the content temperature generation model is specially：
Wherein, Hoti[c] is indicated in period c, the content temperature of the content of TV program i cached；I indicates the electricity cached
Depending on the serial number of programme content, i value ranges are 1 to N, and N is the total number of the content of TV program cached；Hoti[c-1] table
Show the content temperature of the content of TV program i cached at a upper period of period c；It is proportionality coefficient,
Ratio of the content temperature of a cycle shared by current period in expression；Requesti[c] is indicated in the c in the period, has been delayed
The request number of times of the content of TV program i deposited；It indicates in the c in the period, the TV programme cached
The sum of request number of times of content, t1 indicate current time, and ti indicates the timestamp of the content of TV program i cached, when described
Between stamp be exactly at the time of generating the content of TV program i, | t1-ti | between the time for indicating the content of TV program i cached
Every,Probability is asked for time interval, for describing the variation with time interval, content of TV program i is by user
The probability of request.
2. the method as described in claim 1, which is characterized in that the NDN cache nodes are obtained to be cached by NDN networks
Content of TV program, specially：
NDN cache nodes extract cache tag position by NDN network received data packets in the data packet；
Judge whether the value of the cache tag position is 1；
If the value of the cache tag position is 1, just in the data packet, content of TV program to be cached is obtained.
3. the method as described in claim 1, which is characterized in that the NDN cache nodes are obtained to be cached by NDN networks
Content of TV program, specially：
NDN cache nodes extract cache tag position by NDN network received data packets in the data packet；
Judge whether the value of the cache tag position is 0；
If the value of the cache tag position is 0, just in the data packet, content of TV program to be cached is obtained.
4. the method as described in claim 1, which is characterized in that if current cache space cannot accommodate described wait for
The content of TV program of caching, the content name of content of TV program to be cached described in acquisition, specially：
If the current cache space cannot accommodate the content of TV program to be cached, the TV programme cached are obtained
Minimum cache-time of the content in current cache space；
Judge whether the minimum cache-time is more than 35 seconds；
If the minimum cache-time is more than 35 seconds, with regard to the content name of content of TV program to be cached described in acquisition.
5. method as claimed in claim 4, which is characterized in that if current cache space cannot accommodate described wait for
The content of TV program of caching obtains minimum cache-time of the content of TV program cached in current cache space, tool
Body is：
If the current cache space cannot accommodate the content of TV program to be cached, the TV programme cached are obtained
Cache-time of the content in current cache space；
The cache-time is ranked up, according to ranking results, obtains the content of TV program cached in current cache sky
Between in minimum cache-time.
6. a kind of content of TV program buffer storage, which is characterized in that including：
Content of TV program acquisition module is described to be cached for obtaining content of TV program to be cached by NDN networks
Include content name and content asset file in content of TV program, the frequency of TV programme is configured in the content asset file
Road title, video and audio；
Current cache space acquisition module, for obtaining current cache space；
Content name acquisition module, if the content of TV program to be cached cannot be accommodated for the current cache space,
With regard to the content name of content of TV program to be cached described in acquisition；
Matching module, in the content of TV program table to prestore, the content name of acquisition and the content name cached to be carried out
Matching；
First acquisition module just obtains time interval, the request of the content of TV program cached if unsuccessful for matching
Number；
Content temperature generation module, for generating model, the content of TV program cached using preset content temperature
Time interval, request number of times, generate described in the corresponding content temperature of content of TV program that has cached；
Minimum contents temperature acquisition module obtains minimum contents temperature for being ranked up to the content temperature；
Second acquisition module, in the content of TV program cached, obtaining the corresponding TV of minimum contents temperature
Programme content；
Content of TV program cache module, for detecting whether current time gets the corresponding TV of the minimal cache value
The user of programme content asks, if current time, does not get the corresponding content of TV program of the minimum contents temperature
User request, indicate that the corresponding content of TV program of the minimum contents temperature is not at solicited status, wait caching by described
Content of TV program replace the corresponding content of TV program of the minimum contents temperature；
Wherein, the content temperature generation model is specially：
Wherein, Hoti[c] is indicated in period c, the content temperature of the content of TV program i cached；I indicates the electricity cached
Depending on the serial number of programme content, i value ranges are 1 to N, and N is the total number of the content of TV program cached；Hoti[c-1] table
Show the content temperature of the content of TV program i cached at a upper period of period c；It is proportionality coefficient,
Ratio of the content temperature of a cycle shared by current period in expression；Requesti[c] is indicated in the c in the period, has been delayed
The request number of times of the content of TV program i deposited；It indicates in the c in the period, the TV programme cached
The sum of request number of times of content, t1 indicate current time, and ti indicates the timestamp of the content of TV program i cached, when described
Between stamp be exactly at the time of generating the content of TV program i, | t1-ti | between the time for indicating the content of TV program i cached
Every,Probability is asked for time interval, for describing the variation with time interval, content of TV program i is by user
The probability of request.
7. device as claimed in claim 6, which is characterized in that the content of TV program acquisition module is specifically used for：
By NDN network received data packets, cache tag position is extracted in the data packet；
Judge whether the value of the cache tag position is 1；
If the value of the cache tag position is 1, just in the data packet, content of TV program to be cached is obtained；
Alternatively, the content of TV program acquisition module is specifically used for：
By NDN network received data packets, cache tag position is extracted in the data packet；
Judge whether the value of the cache tag position is 0；
If the value of the cache tag position is 0, just in the data packet, content of TV program to be cached is obtained.
8. device as claimed in claim 6, which is characterized in that the content name acquisition module is specifically used for：
If the current cache space cannot accommodate the content of TV program to be cached, the TV programme cached are obtained
Minimum cache-time of the content in current cache space；
Judge whether the minimum cache-time is more than 35 seconds；
If the minimum cache-time is more than 35 seconds, with regard to the content name of content of TV program to be cached described in acquisition；
Wherein, if current cache space cannot accommodate the content of TV program to be cached, acquisition has cached
Minimum cache-time of the content of TV program in current cache space, specially：
If the current cache space cannot accommodate the content of TV program to be cached, the TV programme cached are obtained
Cache-time of the content in current cache space；
The cache-time is ranked up, according to ranking results, obtains the content of TV program cached in current cache sky
Between in minimum cache-time.
9. a kind of content of TV program buffer storage, including memory, processor and it is stored in the memory and can be
The computer program run on the processor, which is characterized in that the processor is realized such as when executing the computer program
The step of any one of claim 1 to 5 the method.
10. a kind of computer storage media, the computer storage media is stored with computer program, which is characterized in that described
It is realized when computer program is executed by processor such as the step of any one of claim 1 to 5 the method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810368969.2A CN108574853A (en) | 2018-04-23 | 2018-04-23 | A kind of content of TV program caching method, device and computer storage media |
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|---|---|---|---|
| CN201810368969.2A CN108574853A (en) | 2018-04-23 | 2018-04-23 | A kind of content of TV program caching method, device and computer storage media |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908612A (en) * | 2019-11-27 | 2020-03-24 | 腾讯科技（深圳）有限公司 | Cache management method, device, equipment and storage medium |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908612A (en) * | 2019-11-27 | 2020-03-24 | 腾讯科技（深圳）有限公司 | Cache management method, device, equipment and storage medium |
| CN110908612B (en) * | 2019-11-27 | 2022-02-22 | 腾讯科技（深圳）有限公司 | Cache management method, device, equipment and storage medium |
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