Best practices for deploying Java webapps with minimal downtime?

Question

When deploying a large Java webapp (>100 MB .war) I\'m currently use the following deployment process:

• The application .war file is expanded locally on the develop

Answer 1

You're using Resin, Resin has built in support for web app versioning.

http://www.caucho.com/resin-4.0/admin/deploy.xtp#VersioningandGracefulUpgrades

Update: It's watchdog process can help with permgenspace issues too.