What servlet engines support clustering -- that is, sharing of session data across multiple load-balanced web servers?

Created May 4, 2012

Chanan Braunstein

[Short list:

JRun 3.0
IBM WebSphere
BEA WebLogic
Enhydra (open-source app server from Lutris)

If you know any more, please submit feedback. -Alex]

JRun 3.0 (Right now in RC1) will support clustering with an add-on. check http://www.allaire.com for info.

In WebSphere Application Server Advanced Edition, you have to enable persistent sessions in order to support session clustering. Also, you have to employ a load balancer like CISCO local director to distribute HTTP requests across multiple web servers/servlet engines.

[victor tago (vtago@yahoo.com) adds: ]

The WebSphere Performance Pack also has a load balancer called Secureway Network Dispatcher.

[Monte Kluemper:]

WebLogic server has supported robust clustering of servlets, EJBs, etc. for over a year!