I think any good App Server engineer needs to learn about checkpointing. It’s such a critical piece of how App Server does what it does that you can’t simply be ignorant of it. Fortunately it works so well that most people never have to troubleshoot it… as opposed to troubleshooting why you can’t get communications with a platform to deploy something.
Here’s an article that came out a couple days ago that discusses some instances where the checkpointing system may not act appropriately, or at least how you think it should.
The second article discusses the success of using App Server on the High Speed Chinese Rail project. I haven’t had a chance to read it yet but I expect it will be really good. I think anytime someone tries to tell you App Server can’t scale you can point to this as published evidence of the fact that it can.
