Handling Overload in Publish/Subscribe Systems

A new approach for handling overload in Publish/ Subscribe systems is presented. We address the issues of how to cope (1) with the limitations imposed by the external environment (e.g., network congestion or link failures) and (2) the limitations resulting directly from within the service itself (e.g., high message load). These two issues are handled in a graceful way while ensuring that the most valuable information is given the highest chance of a successful delivery.