HTTP Session Object

Data stored in server memory to maintain state between the client and server.

• Stores data as key/value pairs using ConcurrentHashMap(attributes).
• Creates a JSESSIONID cookie.
  • Key: JSESSIONID
  • Value: Session ID
• request.getSession()
  • Checks the session ID in the JSESSIONID cookie and returns the corresponding session from the server.
  • getAttribute(key): Returns the attribute value stored in that session.