EVENT DISTRIBUTION SYSTEM, RENDEZVOUS NODE, BROKER NODE, LOAD DISTRIBUTION METHOD FOR EVENT DISTRIBUTION SYSTEM, METHOD FOR DISTRIBUTION OF LOAD ON RENDEZVOUS NODE, DISTRIBUTION ROUTE CONSTRUCTION METHOD FOR BROKER NODE, STORAGE MEDIUM ON WHICH LOAD DISTRIBUTION PROGRAM IS STORED, AND STORAGE MEDIUM ON WHICH DISTRIBUTION ROUTE CONSTRUCTION PROGRAM IS STORED

摘要

Provided is an event delivery system where a bottleneck on the system can be eliminated by reducing load on a rendezvous node. The event delivery system includes publisher nodes, subscriber nodes, the rendezvous node, and broker nodes. The rendezvous node includes a traffic monitoring means that monitors the traffic volume of event information issued by the publisher node, and a specific event determination means that determines specific event information subject to load distribution from among the event information when the traffic volume exceeds a predetermined value. Each broker node includes a route detection means that detects whether its own node is an aggregation point node or a branch point node of the delivery route of the specific event information, and a route construction means that constructs a new delivery route of the specific event information going through the aggregation point node and the branch point node, bypassing the rendezvous node.