So Red Hat AMQ 7 has been out for a while now, and there have already been a lot of customers who are understandably eager to upgrade to the latest and greatest version. Many of them have been reaching out and asking for help/instructions on how to migrate. So far I’ve been replying that I already blogged about that here: Decommissioning JBoss A-MQ brokers. But that reply has been met with some confusion. So I figured I’d write up a more concrete set of instructions.
In a perfect world, every project would be a greenfield project and you could pick and choose the latest/greatest broker every time. And of course, if given the choice you’d pick Apache Artemis… ;) But in the real world, it is much more common that customers will have a very large existing codebase and will have to transition to the latest/greatest over some much longer period of time. And during that period, it’s helpful to be able to set up some sort of bridge between your brokers so that your old and new code can still communicate.
There are loads of use cases which require “all or nothing” processing. And there are a bunch of different strategies for accomplishing said result. Luckily for me, they’ve already been covered many times in tons of different blogs/books/articles. So for this post I’m just going to concentrate on a few of the strategies, and more specifically, how to do them with Apache Camel.
I frequently get asked by customers if it’s possible to run Red Hat JBoss A-MQ on Red Hat OpenShift, and while the answer has been “yes” for quite a while now, it has always been followed by a few caveats. In particular, the issue of scaling…
A while back, I wrote a blog post on HA Deployments With Fuse. Surprisingly, it received a lot of interest. In particular, the JMS section. Apparently, there are tons of people trying to solve the cross-dc HA problem… Not surprisingly, everyone claims to have the highest possible failure requirements and asked me what I meant by “prepare to make some serious performance tradeoffs”. So I figured I’d give some concrete numbers for comparison.
