Spring OpenSessionInViewFilter with @Transactional annotation

Question

This is regarding Spring OpenSessionInViewFilter using with @Transactional annotation at service layer.

i went through so many stack overf

Answer 1

OpenSessionInViewFilter is a servlet filter that binds a hibernate session to http request and for all db operations, transactional and non transactional, same hibernate session is used for a given http request. This exposes db layer to web layer that makes it anti-pattern.

My experience is that this makes the code difficult to debug when we want to make changes to java objects and do not want those to get reflected in database. Since the hibernate session is always open, it expects to flush the data in database.

This should be used only when JS base rest services are there with no service layer in between.