[jboss-user] [Clustering/JBoss] - Re: Importance of M-Bean architecuture

[bstansberry@jboss.com]

If you need to handle a very large number of concurrent web requests, yes, you'll need to use web tier clustering.  Whether you also need to use some kind of state replication depends on whether you want to support HA -- i.e. user doesn't lose session state if their session moves from one server to another.

What kind of state replication depends on where your application stores any session state.  Most common is in the HttpSession, so you enable web session state replication by adding the "distributable" tag to your web.xml.

Multihoming the network card means assigning more than one IP address to the same network interface.  See your OS docs for how to do this.  An alternative is to have a second network interface.  Main point is you have a distinct IP address available for each JBoss instance on the machine.

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