Is Hibernate Session thread safe?

Is Hibernate Session thread safe?

No, Session is not a thread-safe object, many threads can access it simultaneously. In other words, you can share it between threads.

Is hibernate SessionFactory Singleton?

To implement the Hibernate SessionFactory as a singleton, we create a separate class. Because this class is only responsible for making the Hibernate SessionFactory object as a singleton. Usually, we call such type of classes as utility classes.

Are sessions thread safe?

No, Session is not a thread-safe object, many threads can't access it simultaneously. In other words, you cannot share it between threads.

What is the difference between Session and SessionFactory in hibernate?

SessionFactory is a factory class for Session objects. It is available for the whole application while a Session is only available for particular transaction. Session is short-lived while SessionFactory objects are long-lived. SessionFactory provides a second level cache and Session provides a first level cache.

Can hibernate session be shared between threads?

If you were sharing a Hibernate Session between two threads, then one thread changes might not be visible to some other thread (without proper synchronization or volatile reads).

Can I reuse the session in hibernate?

Obviously, you can. A hibernate session is more or less a database connection and a cache for database objects. And you can have multiple successive transactions in a single database connection. ... Whether you should or not is a matter of reusing objects from session.

Is SessionFactory thread-safe in Hibernate?

Once the object is immutable, its internal state is settled on creation and cannot be changed. So many threads can access it concurrently and request for sessions. hence the SessionFactory is thread-safe.

Is SessionFactory thread-safe in hibernate?

Once the object is immutable, its internal state is settled on creation and cannot be changed. So many threads can access it concurrently and request for sessions. hence the SessionFactory is thread-safe.

What are different types of caches available in hibernate?

Hibernate provides 3 types of caching.

• Session Cache. The session cache caches objects within the current session. It is enabled by default in Hibernate. ...
• Second Level Cache. The second level cache is responsible for caching objects across sessions. ...
• Query Cache. Query Cache is used to cache the results of a query.

Is it safe to use multiple hibernate threads at once?

• Hibernate session and threads do not mix. You should not use a session from multiple threads at once, and I recommend you only use a session from a single thread. DB session implementations are not even required to be theadsafe.

Can you create a session for each thread in hibernate?

• Use TheadLocal class to create sessions for each thread:- It depends on how you are creating a session. Session can be created in two ways in hibernate. Yes. It offers thread safety as it'll ensure that it'll create a session for each thread if session not exist. transaction and automatic session closing is attached to this.

Is it safe to have hibernate sessions in Java?

• This becomes quickly mindblowing and you enter areas where the implementers have not tested their products. In the end life is too short to get lost in that swamp. Hibernate sessions are not thread safe. Use TheadLocal class to create sessions for each thread:-

Is the second level cache thread safe in hibernate?

• If your use case is to share the cached entities, then you should use the second-level cache instead which is thread-safe and can be used in a clustered environment. That being said, the need for having a thread-safe Session is a code smell indicating a flaw in the design of the data access layer. Not the answer you're looking for?