Hibernate Framework Hibernate Caching

Question 1

What is the first-level cache in Hibernate?

Accepted Answer

The Session cache that stores entities within a single session

Answer

The first-level cache is the Session's built-in identity map that caches entities for the duration of a single Session.

Question 2

Can the Hibernate first-level cache be disabled?

Accepted Answer

No, it is always enabled and cannot be turned off

Answer

The first-level cache is mandatory in Hibernate and cannot be disabled; it is always active within a Session.

Question 3

What is the second-level cache in Hibernate?

Accepted Answer

A SessionFactory-scoped cache shared across sessions

Answer

The second-level cache operates at the SessionFactory level and shares cached data across all Sessions within the application.

Question 4

Which annotation enables second-level caching on a Hibernate entity?

Accepted Answer

@Cache

Answer

The @Cache annotation (from org.hibernate.annotations) configures second-level cache settings including the CacheConcurrencyStrategy for an entity.

Question 5

Which second-level cache provider is commonly used with Hibernate?

Accepted Answer

Ehcache

Answer

Ehcache is the most commonly used and well-integrated second-level cache provider for Hibernate in enterprise Java applications.

Hibernate Framework Practice Test