<PLEASE NOTE TMCache has officially been shut down in May, 2015>
Fast parallel object cache for iOS and OS X.
TMCache is a key/value store designed for persisting temporary objects that are expensive to reproduce, such as downloaded data or the results of slow processing. It is comprised of two self-similar stores, one in memory (TMMemoryCache) and one on disk (TMDiskCache), all backed by GCD and safe to access from multiple threads simultaneously.
On iOS, TMMemoryCache will clear itself when the app receives a memory warning or goes into the background. Objects stored in TMDiskCache remain until you trim the cache yourself, either manually or by setting a byte or age limit.
SDK for Apple
Removes the need for the explicit memory warning and application background handling, which was an ill-advised change in 2.0.
The other part of the 2.0 release still applies; you need to explicitly provide an object that knows how to vend background tasks in order for operations to continue after your application has been backgrounded.