In an embodiment, a method comprises receiving a hit rate and a change rate for a data object stored in a cache. The method also includes updating a time-to-live period for the data object stored in the cache based on the hit rate and the change rate for the data object....http://www.google.fr/patents/US6772203?utm_source=gb-gplus-shareBrevet US6772203 - Updating data objects for dynamic application caching
Updating data objects for dynamic application caching