MUTABLE OBJECT CACHING

In one embodiment, a method for caching mutable objects comprises adding to a cache a first cache entry that includes a first object and a first key. Assigning a unique identification to the first object. Adding an entry to an instance map for the first object. The entry includes the unique identification and the first object. Creating a data structure that represents the first object. The data structure includes information relevant to the current state of the first object. A second cache entry is then added to the cache. The second cache entry includes the data structure and the unique identification. Updating the first cache entry to replace the first object with the unique identification.