Hibernate ORM 5.1 User Guide

1. Architecture1.1. Overview

Sessionfactory ( org.hibernate.SessionFactory )

A thread-safe (and immutable) representation of the mapping of the application domain model to a database. Acts as a factory for org.hibernate.Session instances. The is the JPA equivalent of a and basically those, and the converge into the EntityManagerFactory SessionFactory same SessionFactory implementation.

A is SessionFactory very expensive to create, so, for any given database, the application should has only one associated SessionFactory . SessionFactorythe maintains services, Hibernate uses across all Session(s) such as second level caches, connection pools, Transac tion system integrations, etc.

Thread Safety

Hibernate ORM 5.1 User Guide