This function has been deprecated. That means it has been replaced by a new function or is no longer supported, and may be removed from future versions. All code that uses this function should be converted to use its replacement if one exists. See also
Use any of these functions
This function was deprecated in favor of wp_cache_switch_to_blog().
Reset internal cache keys and structures. If the cache backend uses global blog or site IDs as part of its cache keys, this function instructs the backend to reset those keys and perform any cleanup since blog or site IDs have changed since cache init.