getting started with Hazelcast describing how ludicrously simple it is to create distributed maps, lists and queues. At the time I mentioned that Hazelcast does quite a few other things besides. This blog takes a quick look at another of Hazelcast’s features: its broadcast messaging system based on the Publish/Subscribe pattern. This takes the usual format where by the message sender app publishes messages on a certain topic. The messages aren't directed at any particular client, but can be read by any client that registers an interest in the topic.