Event Services Are Not New!
Event models
- simple (UNIX signals)
- sophisticated (database triggers)
Event notification services
- LAN message servers (e.g., SUN ToolTalk, DEC Fuse, HP SoftBench)
- USENET News (NNTP)
Basic communication infrastructure
- point-to-point (TCP/IP, RPC, CORBA, RMI)
- multicast (MBONE)