| Some Title
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| Convenor: Dimitris Andreadis
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Participants:
- Rickard Öberg
- Yiannis Foukarakis
- Ioannis Skitsas
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Summary:
- We analyzed some basic functions of application servers
- Classloading / Modules
- Injection / Wiring / Lookup
- Services (transactions, security, messaging, etc.)
- Management & Configuration
- Usual reasons for Application Server to Suck
- Heavyweight (memory footprint, boot speed)
- Making the debugging of user apps more difficult
- Classloading issues
- We discussed some of the innovations of JBoss AS 7 that address many pain points
- Parallel boot, taking advantage all available cores
- Truly modular design based on JBoss Modules
- Detyped core management information model
- JSON externalization of mgmt model allowing all sorts of clients (e.g. perl)
- New configuration model appealing to administrators
- etc.
As a special note, Rickard happened to be the architect of JBoss 2.x!
Conclusion : App Server do not really suck ;-)
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Recommendations:
- Extends IDEs with automatic exception filtering of appserver classes from stacktraces to ease debugging
- JABBER (XMPP) based heartbeat service?
- Get administrators input when designing management consoles!
- Implement the circuit breaker pattern in the JCA subsystem?!
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