Hibernate: Refresh, Evict, Replicate and Flush

Question

I wish I knew what exactly does each item in this list, how it works, what the consequences and when is the correct time to use.

1. Refresh
2. Evict

Answer 1

• session.flush() Flushing the session forces Hibernate to synchronize the in-memory state of the Session with the database.
• session.evict() Detach the object from session cache. After detaching the object from the session, any change to object will not be persisted.
• session.refresh() Reload all the data.
• session.replicate() Data is replicated in different Datastore in different modes.