class cache : (A.key -> A.value Lwt.t) -> int -> object .. end
method find : A.key -> A.value Lwt.t
Find the cached value associated to the key, or binds this
value in the cache using the function passed as argument
to create, and returns this value
method find_in_cache : A.key -> A.value
Find the cached value associated to the key. Raises Not_found
if the key is not present in the cache
method remove : A.key -> unit
method add : A.key -> A.value -> unit
method clear : unit -> unit
method size : int