JP5199165B2 - Communication terminal and communication control method - Google Patents

Description

  The present invention relates to a communication terminal that executes a web application by allocating a predetermined amount of cache memory for executing the web application when the web application is started, and a communication control method that is executed by the communication terminal.

  While an application is being executed on a communication terminal, a process in which the application requests a file uniquely identified by a URL (Uniform Resource Locator) from the server via the network and downloads the file from the server is generally widely performed. It has been broken. Note that, as described above, an application that requests a server for a file required during execution is generally called a “web application”. However, since it takes a considerable amount of processing time to download a file from a server to a communication terminal via a network, in order to increase the processing speed and efficiency, a file that is expected to be used during execution of a web application is stored in advance. A process (so-called prefetch cache process) that is downloaded from a server to a communication terminal and stored in a cache memory is widely known.

JP 2000-250803 A

  However, it is actually difficult to install a large-capacity cache memory in a communication terminal in consideration of practical use.

  Therefore, effective use of a finite cache memory is an important issue when executing a web application on a communication terminal. For example, it is desired to secure a cache hit rate of a certain level or more during execution of the web application and to maintain the responsiveness of the web application to a certain level or more. In addition, since the activation frequency varies depending on individual web applications, it is desirable to allocate a cache memory having an appropriate memory capacity when executing each web application in accordance with the activation frequency.

  Based on the above, an object of the present invention is to effectively utilize a finite cache memory mounted on a communication terminal when executing a web application on the communication terminal.

In order to achieve the above object, a communication terminal according to the present invention includes a cache memory, an allocation unit that allocates a cache memory having a predetermined cache memory allocation capacity for the web application when a certain web application is activated, A hit rate calculation unit that records a cache hit status during execution of the web application and calculates a cache hit rate during execution of the web application based on the cache hit status at the end of execution of the web application; When the cache hit rate falls below a preset lower threshold, the cache memory allocation capacity for the web application is increased, and the calculated cache hit rate exceeds a preset upper threshold equal to or higher than the lower threshold. Around case, the by decreasing the cache memory quota for web applications, the allocation amount adjustment section for adjusting the cache memory quota for the web application, the web application in a past predetermined period in the self communication terminal An activation frequency calculation unit that records an activation status, calculates an activation frequency of each web application activated within the predetermined period based on the web application activation status, and a web application with a higher calculated activation frequency, the lower limit A threshold value resetting unit that resets the lower limit threshold value and the upper limit threshold value according to the activation frequency of each of the web applications so that the threshold value and the upper limit threshold value become higher, and the allocation unit includes the web application At the next startup of Serial allocates a cache memory of the cache memory quota after the adjustment, the quota adjustment unit uses the lower threshold and the upper threshold value is re-set for a certain web applications, cache memory allocation for the web application It characterized that you adjust the volume.

  In the communication terminal, the hit rate calculation unit records the cache hit status during execution of the web application, calculates the cache hit rate based on the cache hit status at the end of execution of the web application, and the allocated capacity adjustment unit Increases the cache memory allocation capacity for the web application if the cache hit ratio is below the lower threshold, and decreases the cache memory allocation capacity for the web application if the cache hit ratio exceeds the upper threshold. The cache memory allocation capacity for the web application is adjusted. Then, the allocation unit allocates the cache memory having the adjusted cache memory allocation capacity at the next activation of the web application. As described above, in order to adjust the cache memory allocation capacity so that the cache hit rate is maintained within a certain range between the lower threshold and the upper threshold, the responsiveness of the web application can be maintained at a certain level or more. It becomes possible.

In addition , the lower threshold and the upper threshold are reset according to the activation frequency of each web application so that the lower the threshold and the upper threshold are higher for the web application with a higher activation frequency, and the lower threshold is reset for a certain web application. And the upper threshold is used to adjust the cache memory allocation for the web application. For this reason, it is possible to allocate a cache memory having an appropriate memory capacity at the time of executing each web application in accordance with the activation frequency of each web application.

  Further, the lower limit threshold and the upper limit threshold may be the same value. In that case, the cache memory allocation capacity is adjusted so that the cache hit rate is maintained at the same value. That is, a certain cache hit rate can be realized.

  The communication terminal according to the present invention is a communication terminal that executes a web application by allocating a cache memory having a predetermined cache memory allocation capacity for the web application when a certain web application is activated. An activation frequency calculating unit that records a web application activation status within a predetermined period in the terminal and calculates an activation frequency of each web application activated within the predetermined period based on the web application activation status; The cache memory allocation capacity for each of the web applications is reset according to the activation frequency of each of the web applications, so that the web application having a higher activation frequency has a larger allocated cache memory capacity. Characterized in that it comprises a quota resetting unit.

  In this case, the cache memory allocation capacity for each web application is reset according to the activation frequency of each web application so that the cache memory allocation capacity to be allocated becomes larger as the web application has a higher activation frequency. For this reason, it is possible to allocate a cache memory having an appropriate memory capacity at the time of executing each web application in accordance with the activation frequency of each web application.

  The invention relating to the communication terminal as described above can also be regarded as an invention relating to the communication control method, and can be described as follows. The invention related to the communication control method also has the same operations and effects as the invention related to the communication terminal.

A communication control method according to the present invention is a communication control method executed by a communication terminal including a cache memory. When a certain web application is started, a cache memory having a predetermined cache memory allocation capacity for the web application is stored. An allocation step for assigning, and a cache hit status during execution of the web application is recorded, and a hit rate calculation for calculating a cache hit rate during execution of the web application based on the cache hit status at the end of execution of the web application And if the calculated cache hit rate falls below a preset lower threshold, the cache memory allocation capacity for the web application is increased, and the calculated cache hit rate When exceeding a preset upper threshold value above the threshold, by decreasing the cache memory quota for the web application, the allocated capacity adjustment step of adjusting the cache memory quota for the web application, the communication An activation frequency calculating step of recording a web application activation status within a predetermined period in the terminal and calculating an activation frequency of each web application activated within the predetermined period based on the web application activation status; A threshold reset step for resetting the lower threshold and the upper threshold according to the activation frequency of each of the web applications so that the lower the threshold and the upper threshold are higher, the higher the activation frequency of the web application is. Comprising The abutting step, the next startup of the web application, allocates a cache memory of the cache memory allocation capacity after the adjustment, and in the allocation capacity adjustment step, the lower limit threshold and the upper threshold value is re-set to a Web application using, you adjust the cache memory quota for the web application, and wherein the.

Also, it may be the same value and the lower threshold and the upper threshold.

  The communication control method according to the present invention is executed by a communication terminal that allocates a cache memory having a predetermined cache memory allocation capacity for a web application when the web application is started and executes the web application. A communication control method for recording a web application activation status within a predetermined period in the past at the communication terminal, and calculating an activation frequency of each web application activated within the predetermined period based on the web application activation status In accordance with the activation frequency of each of the web applications, the activation frequency calculation step and the cache memory allocation capacity allocated to the web application having a higher activation frequency are increased. Characterized in that it comprises a quota resetting step for resetting the Yasshumemori quota, the.

  ADVANTAGE OF THE INVENTION According to this invention, the finite cache memory mounted in the communication terminal can be utilized effectively in the environment which performs a web application with a communication terminal.

It is a system configuration figure of a 1st embodiment. It is a hardware block diagram of a communication terminal. It is a flowchart which shows an allocation capacity adjustment process. It is a system configuration figure of a 2nd embodiment. It is a flowchart which shows a threshold reset process. It is a figure for demonstrating a threshold reset process. It is a system configuration figure of a 3rd embodiment. It is a flowchart which shows an allocation capacity reset process.

Hereinafter, Embodiments 1 to 3 according to the present invention will be described in order with reference to the drawings.
[Embodiment 1]
In the first embodiment, a mode in which the cache memory allocation capacity is adjusted so that the cache hit rate is maintained within a certain range will be described.

  As shown in FIG. 1, the communication system 1 according to the first embodiment includes a server 10 that stores and manages an enormous amount of files and a communication terminal 30, and these are mutually connected via a network 20. It is possible to connect to.

  The communication terminal 30 includes a cache memory 31, a cache control unit 32, an allocated capacity storage unit 34, an allocation unit 35, a hit rate calculation unit 36, a threshold storage unit 37, and an allocated capacity adjustment unit 33.

  Among these, the cache control unit 32 controls file input / output to / from the cache memory 31, requests transmission of the file to the server 10 as necessary, receives a file from the server 10, and stores the file in the cache memory 31. To remember.

  The allocated capacity storage unit 34 stores, for each web application, information on a cache memory allocated capacity (hereinafter abbreviated as “allocated capacity”) to be allocated to the web application when the web application is activated.

  When the web application is activated, the allocating unit 35 refers to the allocated capacity storage unit 34 to acquire information on the allocated capacity related to the web application, and allocates the cache memory 31 having the allocated capacity.

  The hit rate calculation unit 36 records the cache hit status during execution of the web application, and calculates the cache hit rate based on the recorded cache hit status at the end of execution.

  The threshold storage unit 37 stores, for each web application, a lower limit threshold and an upper limit threshold related to a range in which the cache hit rate should be maintained.

  The allocated capacity adjustment unit 33 refers to the threshold storage unit 37 to obtain the lower limit threshold and the upper limit threshold for the target web application, and the cache hit rate during execution of the web application is constant between the lower limit threshold and the upper limit threshold. The allocated capacity for the web application is adjusted (increased or decreased) so as to be maintained within the range.

  FIG. 2 shows an example of the hardware configuration of the communication terminal 30. The communication terminal 30 includes, as a hardware configuration, a CPU 30A, a RAM 30B, a ROM 30C, an input device 30D such as a keyboard and a mouse that are input devices, a communication device 30E that communicates with an external device, a cache memory 30F, An output device 30G such as a display or a printer as an output device is provided, and no special hardware configuration is required. The function of each functional block of the communication terminal 30 described above is to read a predetermined program into the RAM 30B, etc., operate the input device 30D, the communication device 30E, and the output device 30G under the control of the CPU 30A, and to the cache memory 30F etc. It is executed by reading and writing data. Such a hardware configuration is the same in Embodiments 2 and 3 described later.

  On the other hand, as shown in FIG. 1, the server 10 includes a file database 13 that stores an enormous amount of files, a file management unit 14 that manages file input / output to the file database 13, and a file request from the communication terminal 30. Etc., and a transmission unit 12 that transmits the requested file to the communication terminal 30.

  Next, the allocated capacity adjustment process executed by the communication terminal 30 will be described with reference to FIG. In FIG. 3, the web application is abbreviated as “application”.

  As shown in FIG. 3, it is monitored whether or not a predetermined timing at which the allocated capacity for the web application should be adjusted (step S1). Here, examples of the predetermined timing at which the allocated capacity should be adjusted include a time when the web application is activated and a time when an adjustment timing of a predetermined period during execution of the web application arrives.

  When the activation of any web application is detected, an affirmative determination is made in step S1, and the following steps S2 to S10 are executed.

  In step S2, the allocating unit 35 reads information on the allocated capacity related to the activated web application (target web application) from the allocated capacity storage unit 34, and in the next step S3, the allocated capacity ( A cache memory 31 (hereinafter referred to as “allocation capacity C”) is allocated.

  In the next step S <b> 4, the cache control unit 32 requests the server 10 for a file to be prefetched for the allocated capacity C for the target web application, and receives the file from the server 10 and stores it in the cache memory 31. At this time, if necessary, files of other web applications stored in the cache memory 31 are deleted.

  Thereafter, the target web application is executed, and the hit rate calculation unit 36 sequentially records the cache hit status during execution of the target web application (step S5). At the end of execution, the hit rate calculation unit 36 divides the number of successful reads from the cache memory 31 by the number of read attempts from the cache memory 31 from the recorded cache hit status, The cache hit rate H is calculated (step S6).

  Then, the allocated capacity adjustment unit 33 acquires the lower limit threshold and the upper limit threshold related to the target web application from the threshold storage unit 37, and compares the cache hit rate H calculated in step S6 with the lower limit threshold and the upper limit threshold. The allocated capacity for the target web application is adjusted as follows.

  That is, the allocated capacity adjustment unit 33 determines whether or not the cache hit rate H is below the lower threshold (step S7). If the cache hit rate H is below the lower threshold, the allocated capacity C is increased and increased. The subsequent allocated capacity C is stored in the allocated capacity storage unit 34 (step S8). Here, as an example, the allocated capacity C may be increased by adding a predetermined constant α (α> 0) to the allocated capacity C. Since the allocated capacity C after the increase is stored in the allocated capacity storage unit 34, the next time the predetermined timing for adjusting the allocated capacity arrives, the cache memory 31 corresponding to the increased allocated capacity C is allocated. Therefore, it is considered that the next cache hit rate H is higher than this time, and a situation where the cache hit rate H falls below the lower limit threshold can be avoided.

  On the other hand, if the cache hit rate H is not lower than the lower limit threshold value, it is determined whether or not the cache hit rate H is higher than the upper limit threshold value (step S9). C is decreased, and the decreased allocated capacity C is stored in the allocated capacity storage unit 34 (step S10). Here, as an example, the allocated capacity C may be decreased by subtracting a predetermined constant β (β> 0) from the allocated capacity C. The constant β may be set to the same value as the above constant α. Since the allocated capacity C after the decrease is stored in the allocated capacity storage unit 34, the next time the predetermined timing for adjusting the allocated capacity arrives, the cache memory 31 corresponding to the decreased allocated capacity C is allocated. Therefore, it is considered that the next cache hit rate H is lower than this time and a situation where the upper limit threshold is exceeded can be avoided.

  If the cache hit rate H is greater than or equal to the lower threshold and less than or equal to the upper threshold, no adjustment is necessary, and therefore the cache hit rate H is not increased or decreased.

  Thereafter, the process returns to step S1 in FIG. 3 to monitor whether or not a predetermined timing for adjusting the allocated capacity for the web application has come. Then, when an adjustment timing of a predetermined period during execution of the target web application has arrived, or when a new web application is activated, an affirmative determination is made in step S1, and the processes in steps S2 to S10 described above are repeatedly executed. The

  According to the first embodiment described above, since the allocated capacity C is adjusted so that the cache hit rate H is maintained within a certain range between the lower limit threshold and the upper limit threshold, the responsiveness of the web application Can be maintained above a certain level.

[Embodiment 2]
In the second embodiment, a mode is described in which the cache hit rate maintenance level is reset according to the activation frequency of each web application so that the web application having a higher activation frequency has a higher level of maintaining the cache hit rate.

  As shown in FIG. 4, in the communication system 1 according to the second embodiment, the communication terminal 30 further includes an activation frequency calculation unit 39 and a threshold resetting unit 38 as compared with the communication system according to the first embodiment in FIG. It is characterized by providing.

  In the second embodiment, a predetermined reference value is assumed as a level for maintaining the cache hit rate. That is, it is assumed that the lower limit threshold and the upper limit threshold described in the first embodiment are set to the same value (predetermined reference value). Therefore, the threshold storage unit 37 stores a predetermined reference value corresponding to a level at which the cache hit rate should be maintained for each web application.

  The activation frequency calculation unit 39 newly provided in the communication terminal 30 records the activation status of various web applications activated in the past predetermined period in the communication terminal 30, and each web application is based on the activation status. Calculate the activation frequency of.

  Further, the threshold resetting unit 38 sets the reference value according to the start frequency of each web application so that the reference value that should maintain the cache hit rate becomes higher as the calculated start frequency is higher. Reset every time.

  The functions of the other components are the same as the functions described in the first embodiment, and a description thereof will be omitted.

  Subsequently, the threshold resetting process executed by the communication terminal 30 will be described with reference to FIG. In FIG. 5, the web application is abbreviated as “application”.

  As illustrated in FIG. 5, the activation frequency calculation unit 39 records activation states for various web applications activated in the communication terminal 30 (step S <b> 21). And it is monitored whether the predetermined timing which should calculate the starting frequency of a web application has come (step S22). Here, examples of the predetermined timing at which the start frequency of the web application should be calculated include a time when a calculation timing of a predetermined cycle (for example, a daily cycle, a week cycle, etc.) has arrived.

  If it is determined that the predetermined timing for calculating the activation frequency has arrived, an affirmative determination is made in step S22, and the following steps S23 to S24 are executed.

  In step S23, the activation frequency calculation unit 39 calculates the activation frequency of each web application based on the activation statuses of various web applications within the period of the predetermined period recorded in step S21. For example, in the communication terminal 30, the web applications 1 to 3 are activated within a predetermined period, the web application 1 is activated 6 times, the web application 2 is activated 3 times, and the web application 3 is activated 1 time. As shown in FIG. 6A, the activation frequency (in this example, the relative value between the web applications 1 to 3) is “0.6” for the web application 1 and “0.3” for the web application 2. “0.1” is calculated for the web application 3. In FIG. 6, the web application is abbreviated as “application” or “application”.

In the next step S24, the threshold resetting unit 38 sets the reference value according to the start frequency of each web application so that the reference value that should maintain the cache hit rate becomes higher as the calculated start frequency is higher. Reset the value for each web application. For example, when the reference value is reset so that the minimum value is 0.2 and the maximum value is 0.8, the maximum value of the calculated activation frequency is f _max , and the minimum value of the calculated activation frequency is f _min When the start frequency of the web application is f, the reference value to be reset for the web application is obtained by the following equation (1).
Reference value = 0.2 + (0.8−0.2) × (f−f _min ) / (f _max −f _min ) (1)

  As shown in FIG. 6A, when the activation frequency of the web application 1 is “0.6”, the activation frequency of the web application 2 is “0.3”, and the activation frequency of the web application 3 is “0.1”, the equation (1) The reference values are reset to “0.8” for the web application 1, “0.44” for the web application 2, and “0.2” for the web application 3.

  As another example, as shown in FIG. 6B, the activation frequency of the web application 1 is “0.5”, the activation frequency of the web application 2 is “0.3”, and the activation frequency of the web application 3 is “0.2”. In this case, the reference value is reset to “0.8” for the web application 1, “0.4” for the web application 2, and “0.2” for the web application 3 according to the equation (1).

  Thereafter, the process returns to step S21 in FIG. 5 and the processes of steps S21 to S24 are repeatedly executed.

  According to the second embodiment described above, the reference value is reset according to the start frequency of each web application so that the reference value becomes higher as the web application has a higher start frequency. In this way, the allocated capacity of the cache memory is adjusted. For this reason, it is possible to allocate a cache memory having an appropriate memory capacity at the time of executing each web application in accordance with the activation frequency of each web application.

[Embodiment 3]
In the third embodiment, an embodiment will be described in which the allocated capacity is reset according to the activation frequency of each web application so that the cache memory has a larger allocated capacity as the web application has a higher activation frequency.

  As illustrated in FIG. 7, in the communication system 1 according to the third embodiment, the configuration of the communication terminal 30 is different from those of the first and second embodiments. That is, the communication terminal 30 according to the third embodiment includes a cache memory 31, a cache control unit 32, an allocated capacity storage unit 34, an allocation unit 35, an activation frequency calculation unit 39, and an allocated capacity resetting unit 33X. Among these, the cache memory 31, the cache control unit 32, the allocated capacity storage unit 34, and the allocation unit 35 are the same as those in the first and second embodiments, and the activation frequency calculation unit 39 is the same as that in the second embodiment. The description of is omitted.

  The allocation capacity resetting unit 33X newly provided in the communication terminal 30 is configured in accordance with the activation frequency of each web application so that the allocated capacity of the cache memory increases as the calculated activation frequency of the web application increases. Reset the allocated capacity for each web application.

  Next, the allocated capacity resetting process executed by the communication terminal 30 will be described with reference to FIG. In FIG. 8, the web application is abbreviated as “application”.

  As illustrated in FIG. 8, the activation frequency calculation unit 39 records activation states for various web applications activated in the communication terminal 30 (step S <b> 21). And it is monitored whether the predetermined timing which should calculate the starting frequency of a web application has come (step S22). Here, examples of the predetermined timing at which the start frequency of the web application should be calculated include a time when a calculation timing of a predetermined cycle (for example, a daily cycle, a week cycle, etc.) has arrived.

  If it is determined that the predetermined timing for calculating the activation frequency has arrived, an affirmative determination is made in step S22, and the following steps S23 and S25 are executed.

  In step S23, the activation frequency calculation unit 39 calculates the activation frequency of each web application based on the activation statuses of various web applications within the period of the predetermined period recorded in step S21. For example, in the communication terminal 30, the web applications 1 to 3 are activated within a predetermined period, the web application 1 is activated 6 times, the web application 2 is activated 3 times, and the web application 3 is activated 1 time. As shown in FIG. 6A, the activation frequency (in this example, the relative value between the web applications 1 to 3) is “0.6” for the web application 1 and “0.3” for the web application 2. “0.1” is calculated for the web application 3.

  In the next step S25, the allocated capacity resetting unit 33X sets the allocated capacity for each web application in accordance with the activation frequency of each web application so that the calculated capacity of the web application with a higher activation frequency is higher. Reset it. For example, first, the relative ratio of the allocated capacity to be reset for a plurality of web applications is obtained, and then the capacity that can be allocated at that time is allocated to each web application according to the relative ratio of each web application. Thus, the allocated capacity may be reset for each web application. As shown in FIG. 6A, when the activation frequency is “0.6” for the web application 1, “0.3” for the web application 2, and “0.1” for the web application 3, the capacity that can be allocated at that time is The web applications 1 to 3 are distributed at a ratio of 6: 3: 1, and the allocated capacities of the web applications 1 to 3 are reset.

  Thereafter, the process returns to step S21 in FIG. 8, and the processes of steps S21 to S23 and S25 are repeatedly executed.

  According to the third embodiment described above, the allocated capacity of each web application is reset according to the activation frequency of each web application so that the allocated capacity of the cache memory becomes larger as the web application has a higher activation frequency. Therefore, it becomes possible to allocate a cache memory having an appropriate memory capacity at the time of executing each web application according to the activation frequency of each web application.

  DESCRIPTION OF SYMBOLS 1 ... Communication system, 10 ... Server, 11 ... Reception part, 12 ... Transmission part, 13 ... File database, 14 ... File management part, 20 ... Network, 30 ... Communication terminal, 30A ... CPU, 30B ... RAM, 30C ... ROM , 30D ... input device, 30E ... communication device, 30F ... cache memory, 30G ... output device, 31 ... cache memory, 32 ... cache control unit, 33 ... allocation capacity adjustment unit, 33X ... allocation capacity resetting unit, 34 ... allocation Capacity storage unit, 35 ... allocation unit, 36 ... hit rate calculation unit, 37 ... threshold storage unit, 38 ... threshold resetting unit, 39 ... activation frequency calculation unit.

Claims (6)

Cache memory,
An allocation unit that allocates a cache memory having a predetermined cache memory allocation capacity for a web application when a web application is started;
A hit rate calculation unit that records a cache hit status during execution of the web application and calculates a cache hit rate during execution of the web application based on the cache hit status at the end of execution of the web application;
When the calculated cache hit rate falls below a preset lower threshold, the cache memory allocation capacity for the web application is increased, and the calculated cache hit rate is preset to be equal to or higher than the lower threshold. An allocation capacity adjustment unit that adjusts a cache memory allocation capacity for the web application by decreasing a cache memory allocation capacity for the web application when exceeding an upper threshold;
An activation frequency calculating unit that records a web application activation status within a predetermined period in the past in the communication terminal, and calculates an activation frequency of each web application activated within the predetermined period based on the web application activation status;
A threshold resetting unit that resets the lower limit threshold and the upper limit threshold according to the startup frequency of each of the web applications so that the lower limit threshold and the upper limit threshold are higher for a web application having a higher calculated startup frequency. When,
With
The allocation unit is the next startup of the web application, the cache memory of the cache memory allocation capacity after the adjustment allocation, the
The allocated capacity adjustment unit adjusts a cache memory allocated capacity for the web application using the lower threshold and the upper threshold reset for a web application.
A communication terminal characterized by that. The lower limit threshold and the upper limit threshold are the same value,
The communication terminal according to claim 1 . A communication terminal that executes a web application by allocating a cache memory having a predetermined cache memory allocation capacity for the web application at the time of starting a web application,
An activation frequency calculation unit that records a web application activation status within a predetermined period in the past in the communication terminal, and calculates an activation frequency of each web application activated within the predetermined period based on the web application activation status;
Allocation for resetting the cache memory allocation capacity for each of the web applications in accordance with the activation frequency of each of the web applications so that the calculated cache application has a higher cache memory allocation capacity. A capacity resetting unit;
A communication terminal comprising: A communication control method executed by a communication terminal including a cache memory,
An allocation step of allocating a cache memory having a predetermined cache memory allocation capacity for the web application at the time of starting the web application;
A hit rate calculation step of recording a cache hit status during execution of the web application and calculating a cache hit rate during execution of the web application based on the cache hit status at the end of execution of the web application;
When the calculated cache hit rate falls below a preset lower threshold, the cache memory allocation capacity for the web application is increased, and the calculated cache hit rate is preset to be equal to or higher than the lower threshold. An allocation capacity adjustment step of adjusting a cache memory allocation capacity for the web application by decreasing a cache memory allocation capacity for the web application when exceeding an upper threshold;
An activation frequency calculation step of recording a web application activation status within a predetermined period in the past in the communication terminal, and calculating an activation frequency of each web application activated within the predetermined period based on the web application activation status;
A threshold resetting step for resetting the lower threshold and the upper threshold according to the activation frequency of each of the web applications so that the lower threshold and the upper threshold are higher for the web application having a higher calculated activation frequency. When,
With
In the allocation step, at the next startup of the web application, the cache memory having the adjusted cache memory allocation capacity is allocated ,
In the allocated capacity adjustment step, the cache memory allocated capacity for the web application is adjusted using the lower threshold and the upper threshold reset for the certain web application.
A communication control method characterized by the above. The lower limit threshold and the upper limit threshold are the same value,
The communication control method according to claim 4 . A communication control method that is executed by a communication terminal that executes a web application by allocating a cache memory having a predetermined cache memory allocation capacity for the web application when a certain web application is started,
An activation frequency calculation step of recording a web application activation status within a predetermined period in the past in the communication terminal, and calculating an activation frequency of each web application activated within the predetermined period based on the web application activation status;
Allocation for resetting the cache memory allocation capacity for each of the web applications in accordance with the activation frequency of each of the web applications so that the calculated cache application has a higher cache memory allocation capacity. A capacity reset step;
A communication control method comprising:

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