静态
Minimum space to be cleared when the cache is full
缓存容量满时每次清理容量值
The interval time for processing cache requests, in milliseconds
处理缓存请求的间隔时间，单位是毫秒
The interval time for saving file access time, in milliseconds. This time can be long, because it does not matter if the access time is not accurate.
保存文件访问时间的间隔时间，单位是毫秒。这个时间可以很长，因为访问时间就算不对问题也不大。
Maximum capacity of cache directory
缓存目录的最大容量
The URL of the file to be cached.
The temporary file path of the file to be cached.
Add a file to the cache.
将文件添加到缓存中。
Clear all cache files. This method will not be executed immediately, but will be executed in the subsequent processing cycle.
清除所有缓存文件。这个方法不会立即执行，而是在后续的处理周期中执行。
The URL of the file to be retrieved.
The path of the cached file, or null if it is not in the cache.
Get a file from the cache, if it is not in the cache, return null.
从缓存中获取文件，如果不在缓存中，则返回null。
En
Minimum space to be cleared when the cache is full
Zh
缓存容量满时每次清理容量值