The architecture of the READY event notification service

We present the architecture and implementation of READY an event notification service that provides efficient, decoupled, asynchronous event notifications. READY supports consumer specifications that match over both single and compound event patterns, communication sessions that manage quality of service (QoS) for event delivery, grouping constructs for sessions and specifications, event zones and boundary routers that bound the scope of event distribution and control the mapping of events across zones.