AsyncCompletion

A completion that will be complete at a future time.

AsyncResult

A result that will be available at a future time.

CompletableAsyncCompletion

An AsyncCompletion that can later be completed successfully or with a provided exception.

CompletableAsyncResult

An AsyncResult that can be later completed successfully with a provided value, or completed with an exception.

ExpiringMap

A concurrent hash map that stores values along with an expiry. Values are stored in the map until their expiry is reached, after which they will no longer be available and will appear as if removed. The actual removal is done lazily whenever the map is accessed, or when the #purgeExpired() method is invoked.

ExpiringSet

A concurrent hash set that stores values along with an expiry. Elements are stored in the set until their expiry is reached, after which they will no longer be available and will appear as if removed. The actual removal is done lazily whenever the set is accessed, or when the #purgeExpired() method is invoked.