The commonly used methods of data file caching include php file caching and using memcache to cache data. Below I have summarized memcache caching data and data file caching respectively. Friends in need can refer to it.
1. For general variables, change the variable into the format of PHP language and write it to the file. When using, just include the file, which is equivalent to loading the cache.
2. For array-type variables, convert the array into a string that defines the array in the PHP language, and write it to the file. It only takes the time to include it, which is equivalent to loading the cache.
3. Control the cache time by obtaining the creation time of the cache file and comparing it with the current time. If the update time is not reached, the cache is read directly. If the update time is reached, the database is queried.
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