In my last post, I talked about a couple of strategies for setting up disaster recovery for Apache Artemis brokers. In hindsight though, I thought that the subject of the Idempotent Camel Consumer could have used a little more discussion.
A few years back, I wrote a blog about HA strategies for Fuse/AMQ. In it, I talked about a few potential solutions for setting up a DR (Disaster Recovery) configuration for ActiveMQ. The most popular solution, it seems, was to utilize block-level disk replication software. Since it’s been quite a while, and since we’ve updated our messaging code base to Apache Artemis, I figured I’d write up a new post with yet another potential architecture.
So I was at one of my favorite customers several months back, and was demo’ing our new AMQ Streams product (aka Strimzi). They asked for some example Apache Camel apps to show them how to securely connect to their newly installed Kafka on OpenShift. Not an unreasonable request… But try as I might, I could not find any existing examples. Sure, I found examples of Camel talking to Kafka, but not doing so securely. I found examples of Camel talking to Kafka with authz, but not running in OpenShift. I even found examples of plain Java clients running in OpenShift and doing authz, but not using Camel. So I offered to create a set of examples for them “as soon as I got some free time”. Six months later… here we go! ;)
One of the many (many many many) extension points inside Apache Camel is the org.apache.camel.processor.aggregate.AggregationStrategy. These are used in everything from Content Enrichers to Splitters to Aggregators and more. Since their use is so prevalent, I figured that I’d dedicate a whole blog post just for them. So here goes…
I’ve recently had a rash of customers who want to do contract driven REST development. That is, they want to define the contract for their service up front, and then generate their interfaces and models. And like all subjects, if I get asked about it enough times, I’ll write it down in a blog. So here goes…