RegisteBackend if you want a new backend, use this func to registe your backend then load it by config.

WithMakeCacheKey you can write your own makeCacheKey, use this func to change the default makeCacheKey.

WithTTL set ttl to the CachedConfig object, ttl must be a positive number.

WithVersion set version to the cacheFuncConfig object, if you want a function's all cache update immediately, change the version.

CachedConfig save the param and config for a cached func.

CacheExt.

CacheBackend.