What is a SessionFactory? Is it a thread-safe object? | Java Hibernet

 SessionFactory is Hibernates concept of a single datastore and is threadsafe so that many threads can access it concurrently and request for sessions and immutable cache of compiled mappings for a single database. A SessionFactory is usually only built once at startup. SessionFactory should be wrapped in some kind of singleton so that it can be easily accessed in an application code.
 SessionFactory sessionFactory = new Configuration().configure().buildSessionfactory();