David Purcell

You've engineered a J2EE application that has become mission critical for your business operations. You know that downtime will be less acceptable as the business starts to rely more on the application, so you want to start eliminating single points of failure and improve availability. One of your first thoughts might be: "Let's move to a clustered application server environment." Migrating to a clustered environment is a reasonable thing to do, but if this is your first experience with clustering application servers, make sure you understand what you're getting into when you go to your project owner and tell him or her about your plans. Project Considerations Why Are You Migrating to a Cluster? Before anything, make sure you're migrating to a cluster at the right time and for the right reasons. A clustered application server environment can give you failover capabi... (more)