Session Scope

• A request is created once for every time a client requests a resource.
  • We saw how request scope can be shared by Servlets through request delegation.
• A session is created once for each client even if the same client visits the same site more than once (subject to timeouts).
• The container hides the details of:
  • Handling requests,
  • Creating sessions,
  • Managing timers to destroy unused sessions.