4.4. Cache Entry Expiration Notifications

Red Hat JBoss Data Grid does not guarantee that an eviction occurs immediately upon timeout. Instead, a number of mechanisms are used in collaboration to ensure efficient eviction. An expired entry is removed from the cache when either:

If a user requests an entry that is expired but not yet evicted, a null value is sent to the user. This mechanism ensures that the user never receives an expired entry. The entry is eventually removed by the eviction thread.