How to use separated sessions based on application in symfony

Currently, I’m playing with symfony mvc framework. In my current project is developing used by symfony and that’s have 2 app which are backend and frontend. But the project requirement is – these apps have to use their own session. So I separated the session in application level configuration as like follow -

In apps/backend/config/factories.yml

#apps/backend/config/factories.yml

all:

  ... # other configurations

  storage:
    class: sfSessionStorage
    param:
      session_name: backend_session

In apps/frontend/config/factories.yml

#apps/frontend/config/factories.yml

all:

  ... # other configurations

  storage:
    class: sfSessionStorage
    param:
      session_name: frontend_session

That all it is. Hope it useful for someone