What is the correct approach to initializing a Hibernate session in a Java web application?

Question

Java

I'm starting to delve into the Hibernate library and use it in a Java web application, the servlet accepts commands and actually processes them using Hibernate.
Here is a simple and small example:

spoiler

Configuration cfg = new Configuration().configure().addAnnotatedClass(User.class);
        ServiceRegistry reg = new StandardServiceRegistryBuilder().applySettings(cfg.getProperties()).build();
        SessionFactory sf = cfg.buildSessionFactory(reg);

        Session session = sf.openSession();

        Transaction tr = session.beginTransaction();
        
        session.save(user);
        
        tr.commit();
        
        session.close();
        sf.close();

Question: should I re-initialize the Configuration, ServiceRegistry, SessionFactory with each request? If not, what is the best approach?

Answer 1

Not worth it.
And in general, it's better to read the Spring source code.
IMHO, everything is sensibly arranged there. It can be used not only as a tool but also as a guide.

Answer 2

Hello, I found the answer:
No, it's not worth it, it's enough to initialize the parameters and fariku sessions once.
It is better to initialize at the start of the application, I do this with the help of ServletContextListener