Team Concert 6.0.4: New Horizontal Clustering Features
CLM Clustering is Dead!
Long Live CLM Clustering!
Likely due to customer demand, IBM has reintroduced support for Java based clustering with CLM 6.0.4. This is an entirely new type of Java clustering because it is supported only on WebSphere Liberty (not WAS traditional or ND). Under the covers, the magic that makes this happen is a MQTT broker which manages cache invalidation and coordination messages, which was the Achilles heel of the old method of clustering. The MQTT Broker is not included as a part of the solution and would need to be purchased separately. There is also an available open source broker, http://mosquitto.org/.
MQTT Brokering
MQTT (Message Queue Telemetry Transport) is a machine to machine protocol designed for IoT applications. It is designed as a lightweight publish/subscribe messaging protocol, and is an OASIS standard. This standard is implemented by vendor products such as IBM IoT MessageSight, which is a standalone appliance separate from Team Concert / CLM. Here’s an overview of MessageSight and how it works:
