STATS_HITS = 'hits'
save(string $id, mixed $data, integer $lifeTime) : boolean
Puts data into the cache.
If a cache entry with the given id already exists, its data will be replaced.
The cache id.
The cache entry/data.
The lifetime in number of seconds for this cache entry. If zero (the default), the entry never expires (although it may be deleted from the cache to make place for other entries).
TRUE if the entry was successfully stored in the cache, FALSE otherwise.
getStats() : array|null
Retrieves cached information from the data store.
The server's statistics array has the following values:
hits Number of keys that have been requested and found present.
misses Number of items that have been requested and not found.
uptime Time that the server is running.
memory_usage Memory used by this server to store items.
memory_available Memory allowed to use for storage.
An associative array with server's statistics if available, NULL otherwise.