Network Deployment (Distributed operating systems), v8.0 > Applications > Web applications > Sessions


Distributed sessions

In a distributed environment, you can save sessions in a database using database session persistence or you can store sessions in multiple WAS instances using memory-to-memory session replication.

WAS provides the following session mechanisms in a distributed environment:

When a session contains attributes that implement HttpSessionActivationListener, notification occurs anytime the session is activated (that is, session is read to the memory cache) or passivated (that is, session leaves the memory cache). Passivation can occur because of a server shutdown or when the session memory cache is full and an older session is removed from the memory cache to make room for a newer session. It is not guaranteed that a session is passivated in one application server prior to activation in another application.
Sessions
Task overview: Managing HTTP sessions Concept topic

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