Clears all entries from the cache.
Removes a State from the cache.
The absolute URI to remove
Checks if a State exists in the cache.
The absolute URI to check
true if the URI is cached
Stores a State object in the cache.
The state will be cloned before storing to prevent mutation.
The State object to cache
Cache implementation that stores nothing.
Useful when always-fresh reads are preferred over local state reuse.