Broker comprises from one or many Virtual Hosts. Virtual Host can be defined as a collection of exchanges, message queues and associated objects and is an independent server domain that share a common authentication, encryption and transport environment. The following diagram depicts the Virtual Host model:

Virtual Host Model

Each Virtual Host has its own Message Store which is used to store the persistent messages from all Queues declared on the Virtual Host. The following message stores are currently supported: JDBC Message Store Derby Message Store Berkeley DB Message Store Berkeley DB HA Message Store Memory Message Store Virtual Hosts configuration is covered in .