Singleton websocket publisher with Autobahn pubsub & Crossbar.io Meta events

In the bigdata analytics architectures centered around Hadoop ecosystem, Zookeeper plays an important role of coordinating the resources and resource ownership. For example, in a distributed cluster with multiple nodes serving the same resource, you can implement fault-tolerance by selecting a dormant node as active resource-owner whenever the active node goes down. How do you […]

How to make Access Control Lists (ACL) work for Mosquitto MQTT Broker with Auth Plugin?

If you planning to strengthening your MQTT service, then access control lists (ACL) are mandatory. Mosquitto broker supports this ACL feature through auth plugins. One versatile auth-plugin for mosquitto that you should consider using is https://github.com/jpmens/mosquitto-auth-plug. It is very flexible, in that it can support multiple backends as auth provider databases, ranging from CDB, Redis to […]