WO2018161294A1 - Local caching method and apparatus for application program - Google Patents

Abstract

Disclosed in the present invention is a local caching method for an application program. The method comprises: when it detected that an application program list page is opened, detecting whether local data of the application program exits on a terminal; if not, obtaining first application data of the application program from a server through an application program interface, and displaying the first application data by means of the list page; and storing the first application data as local data. The present invention also provides a local caching apparatus for an application program. In the local caching method and apparatus for an application program provided in the present invention, data of a list page is locally cached, and when the list is displayed, the data can be display by accessing the local data, accordingly, the pressure on a background server is reduced to some extent, and offline access of a user is supported, and the page loading speed is increased, thereby greatly improving user experience.

Description

 Application local caching method and device Technical field

The present invention relates to the field of communications technologies, and in particular, to an application local cache method and apparatus.

Background technique

In recent years, mobile terminals (such as smart phones) have developed rapidly. While enjoying the convenience brought by mobile terminals, people also find that mobile terminals still have many shortcomings in user experience. In a prior art mobile terminal, such as a smart phone, an application generally does not have a local cache or a local cache is implemented by a file storage. Therefore, when a user opens an application, it generally needs to load data through the network or through an IO operation. Read the stored xml file. Reading and writing file IO operations take a long time. When the number of operations for reading and writing files is too many, each time the file data is read, it will bring a large performance overhead, occupying system resources, and returning from the server will result in download speed. The impact of the application list page loading is very slow, and the above various situations are likely to cause a bad user experience.

Based on this, it is necessary to provide an application local caching method and device to solve the problem that the current application page is loaded with a slower speed and a larger resource overhead.

technical problem

The main purpose of the present invention is to solve the technical problem that the prior art has a slower speed and a larger resource overhead when the application page is loaded.

Technical solution

To achieve the above objective, the present invention provides an application local caching method, the method comprising:

When detecting that the application list page is opened, detecting whether the terminal has local data of the application;

If the data does not exist, the first application data of the application is obtained from the server through the application program interface, and the first application data is displayed by using the list page;

The first application data is saved as the local data.

Preferably, after detecting that the application list page is opened, detecting whether the terminal has local data of the application, the method further includes:

If so, the local data is obtained and the local data is presented through the list page.

Preferably, the method further includes:

When detecting a refresh operation of the user on the list page, acquiring second application data of the application from a server through an application program interface;

Calculating and comparing the md5 value of the second application data and the md5 value of the local data respectively;

If the two md5 values are different, saving the second application data as new local data to update the local data;

The updated local data is displayed through the list page to refresh the list page.

Preferably, before the detecting that the application list page is opened, detecting whether the terminal has local data of the application, the method further includes:

A local cache space is allocated from the terminal memory space for storing local data of the application.

Preferably, the local data cache mode is localStorage, and the local cache space is a localStorage space.

In addition, to achieve the above object, the present invention further provides an application local cache device, including:

a detecting module, configured to detect, when the application list page is opened, whether the terminal has local data of the application;

An obtaining module, configured to acquire first application data of the application from a server through an application program interface when the local data does not exist;

a display module, configured to display the first application data by using the list page;

And an update module, configured to save the first application data as the local data.

Preferably, it is characterized by:

The obtaining module is further configured to acquire the local data when the local data exists;

The presentation module is further configured to display the local data through the list page.

Preferably, the obtaining module is further configured to: when detecting a refresh operation of the user on the list page, acquire second application data of the application from a server through an application program interface;

Correspondingly, the application local cache device further includes:

a calculation module, configured to separately calculate and compare the md5 value of the second application data and the md5 value of the local data;

The update module is further configured to save the second application data as new local data to update the local data when the two md5 values are different;

The display module is further configured to display the updated local data through the list page to refresh the list page.

Preferably, the application local cache device further includes:

And a dividing module, configured to divide a local cache space from the terminal memory space, and store local data of the application.

Preferably, the local data cache mode is localStorage, and the local cache space is a localStorage space.

Beneficial effect

The application local caching method and apparatus provided by the present invention, when detecting that the application list page is opened, detecting whether the terminal has local data of the application; if not, acquiring the local device from the server through the application program interface Determining the first application data of the application, displaying the first application data through the list page; and saving the first application data as the local data. As a result, the data of the list page is cached locally, and the display can be realized by accessing the local data when the list is displayed, which reduces the pressure of the back-end server to a certain extent, and supports the offline access of the user and improves the page loading speed. Greatly improved the user experience.

DRAWINGS

1 is a schematic flowchart of a first embodiment of an application local cache method according to the present invention;

2 is a schematic flowchart of a second embodiment of an application local cache method according to the present invention;

3 is a schematic diagram of functional modules of a first embodiment of an application local cache device according to the present invention;

4 is a schematic diagram of functional modules of a second embodiment of an application local cache device of the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

Embodiments of the invention

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that, in various embodiments of the present invention, the terminal includes, but is not limited to, a mobile terminal such as an IPAD or a mobile phone.

The invention provides an application local caching method. Referring to FIG. 1, FIG. 1 is a schematic flowchart diagram of a first embodiment of an application local cache method according to the present invention. In this embodiment, the application local caching method includes:

Step S10, when detecting that the application list page is opened, detecting whether the terminal has local data of the application;

Specifically, in general, the application needs to verify the user. For the application that needs to verify the login, after the user opens the application and successfully logs in, the application needs to display the default list page to the user, or the user can Select a list page to open. When the terminal detects that a certain list page of the application is opened, the page needs to be loaded. At this time, the terminal needs to acquire the page data, and firstly detects whether the local data of the application exists in the local storage space.

Further, in this embodiment, before step S10, the method further includes the following steps:

A local cache space is allocated from the terminal memory space for storing local data of the application.

Specifically, a local cache space of a certain size is allocated from the terminal memory space for storing local data cached by the application on the terminal to the local. It can be understood that in the local cache space, local data of more than one application is stored. The storage location of each application and its corresponding local data can be recorded through a mapping table. When local data corresponding to an application needs to be acquired or detected, the storage location of the corresponding local data can be obtained from the mapping table to find The local data. The storage mode of the data local cache includes, but is not limited to, local storage, websql, sqllite, and the like. In the embodiments of the present invention, the local storage method of the HTML5 is preferably used. In each embodiment of the present invention, the local cache space is preferably localStorage space.

Compared with the file storage mode, each time the file is read or written, the IO takes a long time. When the file is read and written too much, the data is too large, which will affect the performance of the terminal. The local cache implemented by localStorage is offline. At the same time, it also avoids the time-consuming and performance loss of multiple readings, which improves the smoothness of page loading and brings a better experience for users.

Step S20, if not, acquiring the first application data of the application from the server through the application program interface, and displaying the first application data by using the list page;

Step S30, saving the first application data as the local data.

Specifically, when the local data of the application does not exist locally, the application may be used for the first time or the user performs an empty cache operation. Therefore, the data displayed this time needs to be obtained from the server, and the terminal passes the application. Interface Programming Interface, application programming interface (API, API for short) is a data request to the server and receives the first application data of the application returned by the server, and the first application data is saved in the local cache space as the application. Local data. At this time, the terminal obtains the data required for the list page display, and the first application data can be displayed through the list page.

It can be understood that, here, the application data acquired from the server mainly refers to data required by the application for displaying the list page, including but not limited to audio data, video data, picture data, and text data.

It should be noted that here, the cached local data is generally the data of one page of the current application. For example, for a list page, generally only the data of the current list page needs to be saved, and the page data of the page turning does not need to be cached.

It can be understood that in various embodiments of the present invention, local data can be saved by md5 (Message Digest) Algorithm 5, MD5, Message Digest Algorithm Fifth Edition, abbreviated Abstract Algorithm) is encrypted to ensure data integrity.

Step S40, if yes, acquiring the local data and displaying the local data through the list page.

Specifically, when the application data is not opened for the first time or the user does not perform the flushing operation before, the local data corresponding to the application is generally stored in the local cache space. When the terminal locally stores the local data corresponding to the application, the terminal may directly acquire the local data, load the list page, and display the local data, for example, display related picture text or video data. On the list page, the user can click on the corresponding picture or text link to open a new list page. The user can also refresh the current list page by refreshing operations such as pulling down or clicking a refresh button to update the page content.

The application local caching method provided by the above embodiment detects whether the terminal has local data of the application when it is detected that the application list page is opened; if not, the application is obtained from the server through the application program interface. a first application data of the program, the first application data is displayed through the list page; and the first application data is saved as the local data. As a result, the data of the list page is cached locally, and the display can be realized by accessing the local data when the list is displayed, which reduces the pressure of the back-end server to a certain extent, and supports the offline access of the user and improves the page loading speed. Greatly improved the user experience.

Further, please refer to FIG. 2. FIG. 2 is a schematic flowchart diagram of a second embodiment of an application local cache method according to the present invention. The difference from the first embodiment of the application local caching method is that, in this embodiment, in addition to steps S10-S40 (not shown again), the method further includes:

Step S50, when detecting a refresh operation of the user on the list page, acquiring second application data of the application from a server through an application program interface;

Step S60, respectively calculating the md5 value of the second application data and the md5 value of the local data, and comparing the values;

Step S70, if the two md5 values are different, saving the second application data as new local data to update the local data;

Step S80, displaying the updated local data through the list page to refresh the list page.

Specifically, when the list page is displayed, the terminal detects the user's operation in real time. When the user's refresh operation is detected, at this time, the server needs to request to confirm whether the current page has updated content to be displayed. In detail, each time the user refreshes the page, the terminal will request data from the server through the API. The terminal returns data through two callback functions of the middle layer, one returns local cache data, and one returns the application data of the current application returned by the server through the API (ie, the second application data). When the callback function is called, the first pass A callback returns local data. When the server requests a return, it compares the local data with the returned second application data. If there is an update, the local data is updated, and then the second callback returns the updated page data; if there is no update, it remains unchanged. change. When comparing the local data and the returned second application data, it is mainly confirmed by comparing the md5 values of the two whether the two are consistent data. If the md5 values are different, the two are different data, and the current page needs to be updated, and vice versa. The second application data returned is the same as the local data currently stored locally, and the current page does not need to be updated.

The following is an actual scenario to illustrate the update process of the application's local cache data in the actual application:

(1) The user accesses a certain list page.

(2) The terminal first obtains the local data presentation from the local, and then obtains the application data refresh of the current application from the application interface according to the refresh operation of the user, and simultaneously compares the md5 with the local data. Different, store a copy into the local localstorage, and md5 encrypt the data, and update the current page table page; the same, the application interface remains unchanged.

In this way, when the page is loaded, the user first sees the cached local data, so the loading speed is very fast, and the data storage and update through md5 can ensure the consistency and integrity of the data transmission.

The application local caching method provided by the above embodiment can update the local data in real time through the md5 value comparison, and can save the page update while enabling the user to seamlessly see the latest data, and realize the user angle while ensuring the page update. Seamless slot page switching.

The invention provides an application local caching device. Referring to FIG. 4, FIG. 4 is a schematic diagram of functional modules of a first embodiment of a mouse application local cache device according to the present invention. In this embodiment, the application local cache device 100 is applied to the terminal, and includes:

The detecting module 101 is configured to detect, when the application list page is opened, whether the terminal has local data of the application;

Specifically, in general, the application needs to verify the user. For the application that needs to verify the login, after the user opens the application and successfully logs in, the application needs to display the default list page to the user, or the user can Select a list page to open. When the terminal detects that a certain list page of the application is opened, the page needs to be loaded. At this time, the terminal needs to acquire the page data, and the detecting module 101 first detects whether the local data of the application exists in the local storage space.

Further, in this embodiment, the application local cache device 100 further includes:

The dividing module 106 is configured to divide a local cache space from the terminal memory space for storing local data of the application.

Specifically, the dividing module 106 divides a certain size of the local cache space from the terminal memory space for storing the local data cached by the application on the terminal to the local. It can be understood that in the local cache space, local data of more than one application is stored. The storage location of each application and its corresponding local data can be recorded through a mapping table. When local data corresponding to an application needs to be acquired or detected, the storage location of the corresponding local data can be obtained from the mapping table to find The local data. The storage mode of the data local cache includes, but is not limited to, local storage, websql, sqllite, and the like. In the embodiments of the present invention, the local storage method of the HTML5 is preferably used. In each embodiment of the present invention, the local cache space is preferably localStorage space.

Compared with the file storage mode, each time the file is read or written, the IO takes a long time. When the file is read and written too much, the data is too large, which will affect the performance of the terminal. The local cache implemented by localStorage is offline. At the same time, it also avoids the time-consuming and performance loss of multiple readings, which improves the smoothness of page loading and brings a better experience for users.

The obtaining module 102 is configured to: when the local data does not exist, obtain the first application data of the application from the server through the application program interface and save the data as the local data;

The display module 103 is configured to display the first application data by using the list page;

The update module 104 is configured to save the first data as the local data.

Specifically, when the local data of the application does not exist locally in the terminal, the application may be used for the first time or the user performs the clearing cache operation. Therefore, the data displayed this time needs to be acquired from the server, and the module 102 is acquired at this time. A data request is made to the server through an application program interface (API) and the first application data of the application returned by the server is received, and the first application data is saved by the update module 104 into the local cache space as local data of the application. At this time, the obtaining module 102 obtains the data required for the display of the list page, and the display module 103 can display the first application data through the list page.

It can be understood that, here, the application data acquired from the server mainly refers to data required by the application for displaying the list page, including but not limited to audio data, video data, picture data, and text data.

It should be noted that here, the cached local data is generally the data of one page of the current application. For example, for a list page, generally only the data of the current list page needs to be saved, and the page data of the page turning does not need to be cached.

It can be understood that in various embodiments of the present invention, the preservation of local data can be saved by md5 encryption to ensure data integrity.

The obtaining module 102 is further configured to acquire the local data when the local data exists;

The presentation module 103 is further configured to display the local data through the list page.

Specifically, when the application data is not opened for the first time or the user does not perform the flushing operation before, the local data corresponding to the application is generally stored in the local cache space. When the terminal locally stores the local data corresponding to the application, the obtaining module 102 can directly obtain the local data, and the display module 103 loads the list page and displays the local data, for example, displaying related picture text or video data. On the list page, the user can click on the corresponding picture or text link to open a new list page. The user can also refresh the current list page by refreshing operations such as pulling down or clicking a refresh button to update the page content.

The application local cache device provided by the above embodiment detects whether the terminal has local data of the application when it is detected that the application list page is opened; if not, the application is obtained from the server through the application program interface. a first application data of the program, the first application data is displayed through the list page; and the first application data is saved as the local data. As a result, the data of the list page is cached locally, and the display can be realized by accessing the local data when the list is displayed, which reduces the pressure of the back-end server to a certain extent, and supports the offline access of the user and improves the page loading speed. Greatly improved the user experience.

Further, please refer to FIG. 4. FIG. 4 is a schematic diagram of functional modules of a second embodiment of an application local cache method according to the present invention. The difference from the first embodiment of the application local caching device is that in this embodiment:

The obtaining module 102 is further configured to: when detecting a refresh operation of the user on the list page, acquire second application data of the application from a server through an application program interface;

Correspondingly, the application local cache device 100 further includes:

The calculating module 105 is configured to separately calculate and compare the md5 value of the second application data and the md5 value of the local data;

The update module 104 is further configured to save the second application data as new local data to update the local data when the two md5 values are different;

The display module 103 is further configured to display the updated local data through the list page to refresh the list page.

Specifically, when the list page is displayed, the terminal detects the user's operation in real time. When the user's refresh operation is detected, at this time, the obtaining module 102 needs to request the server to confirm whether the current page has updated content to be displayed. In detail, each time the user refreshes the page, the obtaining module 102 will request data from the server through the API. The obtaining module 102 returns data through two callback functions of the middle layer, one returns local cache data, and one returns application data of the current application returned by the server through the API (ie, second application data), when the callback function is called, first The local data is returned by the first callback. After the server requests the return, the calculation module 105 compares the local data with the returned second application data. If there is an update, the update module 104 completes the update of the local data, and then the second callback returns the update. Page data; remains unchanged if there are no updates. When the local data and the returned second application data are compared, the calculation module 105 mainly checks whether the two are consistent data by comparing the md5 values of the two. If the md5 values are different, the two are different data, and the current page needs to be updated. On the contrary, it means that the returned second application data is the same as the currently stored local data, and the current page does not need to be updated.

The following is an actual scenario to illustrate the update process of the application's local cache data in the actual application:

(1) The user accesses a certain list page.

(2) The terminal first obtains the local data display from the local, and then obtains the application data refresh of the current application from the application interface according to the refresh operation of the user, and simultaneously compares the md5 with the local data. Different, store a copy into the local localstorage, and md5 encrypt the data, and update the current page table page; the same, the application interface remains unchanged.

In this way, when the page is loaded, the user first sees the cached local data, so the loading speed is very fast, and the data storage and update through md5 can ensure the consistency and integrity of the data transmission.

The application local cache device provided by the above embodiment can update the local data in real time through the md5 value comparison, and can save the page update while enabling the user to seamlessly see the latest data, and realize the user angle while ensuring the page update. Seamless slot page switching.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims (10)

 An application local caching method, the method comprising: When detecting that the application list page is opened, detecting whether the terminal has local data of the application; If the data does not exist, the first application data of the application is obtained from the server through the application program interface, and the first application data is displayed by using the list page; The first application data is saved as the local data. The application local cache method according to claim 1, wherein, after detecting that the application list page is opened, detecting whether the terminal has local data of the application, the method further includes: If so, the local data is obtained and the local data is presented through the list page. The application local caching method according to claim 1 or 2, wherein the method further comprises: When detecting a refresh operation of the user on the list page, acquiring second application data of the application from a server through an application program interface; Calculating and comparing the md5 value of the second application data and the md5 value of the local data respectively; If the two md5 values are different, saving the second application data as new local data to update the local data; The updated local data is displayed through the list page to refresh the list page. The application local caching method according to claim 1 or 2, wherein, when detecting that the application list page is opened, detecting whether the terminal has local data of the application, the method further include: A local cache space is allocated from the terminal memory space for storing local data of the application. The local cache method of the application according to claim 4, wherein the local data cache mode is localStorage, and the local cache space is a localStorage space. An application local caching device, wherein the application local caching device comprises: a detecting module, configured to detect, when the application list page is opened, whether the terminal has local data of the application; An obtaining module, configured to acquire first application data of the application from a server through an application program interface when the local data does not exist; a display module, configured to display the first data by using the list page; And an update module, configured to save the first application data as the local data. The application local caching apparatus according to claim 6, wherein: The obtaining module is further configured to acquire the local data when the local data exists; The presentation module is further configured to display the local data through the list page. The application local caching device according to claim 6 or 7, wherein: The obtaining module is further configured to: when detecting a refresh operation of the user on the list page, acquire, by using an application program interface, second application data of the application from a server; Correspondingly, the application local cache device further includes: a calculation module, configured to separately calculate and compare the md5 value of the second application data and the md5 value of the local data; The update module is further configured to save the second application data as new local data to update the local data when the two md5 values are different; The display module is further configured to display the updated local data through the list page to refresh the list page. The application local cache device according to claim 6 or 7, wherein the application local cache device further comprises: And a dividing module, configured to divide a local cache space from the terminal memory space, and store local data of the application. The application local cache device according to claim 9, wherein the local data cache mode is localStorage, and the local cache space is a localStorage space.