TY  - RPRT
U1  - Arbeitspapier
A1  - Schmid, Albrecht
T1  - The Architecture of the Instant Messaging System I3M
N2  - Web services are, due to the excellent tool support, simple to provide and use in trivial cases. But their use in non-trivial Web service-based systems like I3M poses new difficulties and problems. I3M is an instant messaging and chat system with distributed and local components collaborating via Web services. One difficulty is to make a series of related Web service invocations in a stateful session. A problem is the performance of collaborating collocated, service-oriented components of a system due to the high Web service invocation overheaed as is shown by measurements. Solutions to both the difficulty and the problem are proposed.
KW  - Web Services
KW  - I3M
KW  - istant messaging system
KW  - chat system
Y1  - 2004
ER  -