# Method Cache.Storage.Base()->aget()

Method aget

  `void aget(string key, function(string, int(0..0)|Cache.Data, mixed ... :void) callback, mixed ... extra_callback_args)`

Description

  Fetch some data from the cache asynchronously.

  callback() will get as first argument key, and as second argument `0` (cache miss) or an Cache.Data object, plus any additional argument that the user may have supplied.