Method and device for refreshing cached data

Abstract

The embodiment of the invention provides a method and a device for refreshing cache data. RELATING TO NETWORK TECHNOLOGY, The method comprises the following steps of: obtaining a sample; according tothe current cache value and the refreshing time of the current cache value, determining a predicted change rate between the cache value and the current cache value during next refreshing according toa preset mapping relation between the cache interval and the step value and a historical cache value and a refreshing moment of the historical cache value, and determining a step value corresponding to the cache interval to which the current cache value belongs according to the preset mapping relation between the cache interval and the step value; According to the current cache value and a step value corresponding to a cache interval to which the current cache value belongs, determining a predicted difference value between the cache value and the current cache value during next refreshing; Determining the next refreshing time according to the prediction difference value, the prediction change rate and the refreshing time of the current cache value; And when the next refreshing moment is reached, refreshing the current cache value. By adopting the method and the device, the timeliness of the current cache value can be improved, and the waste of server resources can be avoided.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a method and device for refreshing cached data. Background technique [0002] In order to reduce the operating pressure of the server, in the prior art, the server stores some data in the cache, and refreshes the current cache value at regular intervals. After the current cache value is refreshed, the server may send the refreshed cache value to the user terminal, and the user terminal may acquire the refreshed cache value and display it to the user. For example, the server can count the number of times the video is played, and store the number of times the video is played in the cache, and then refresh the number of times the video in the cache is played at a fixed time interval, such as playing the video in the cache every 10 minutes times to refresh. In this way, whenever the video is played and the number of times the video is played increases, the server does not need to ...

AI Technical Summary

Problems solved by technology

If the refresh time setting is small, the server will refresh frequently, which will cause a waste of server resources

For example, assuming that the fixed time interval is 1 second, and the number of video playbacks in the current cache is 1000, if the current moment is a period of user downturn, the number of video playbacks does not change within 50 seconds, although the number of video playbacks does not change. However, during this period, the number of video playbacks in the cache was refreshed 50 times, resulting in a waste of server resources

[0004] To sum up, in the prior art, refreshing the cached data at a fixed time interval will result in low timeliness of the current cached value, or cause wasteful use of server resources

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