Hello, I know this question is a bit off-topic, but I can't resist to ask directly where all the cluster-specialists are ;)
Are there special (best would be open-source) frameworks for in-cluster communication? I have to make a large servlet-based solution cluster-ready and it seems to be really hard because: - There are shared resources which are accessed the way if(resource.getState) -> resource.setState(). For now these areas where protected by a synchronized-block locking on a SingleTon. To solve this problem I would need something lock a distributed locking framework or something like that. - Shared data. There is lots of data shared between sessions living in Singletons too - imagine a global, shared sketchboard where everybody can draw to. The software uses a "clever" mechanism which lets request wait for e.g. 10s and respond event-driven if something changes For now I solved the locking-problem with simply implementing a backery-locking-algorythmn reading/writing to a database - however the overhead is terrible of course. The only software I found was JGroups, however because it uses Multicasting its kind of hard to configure (not really suited or out-of-box readyness). Are there other maybe simpler frameworks which are also designed to solve the above issues? Sorry again for generating traffic and thanks a lot for Tomcat6 - the NIO connectors are wonderful :-) lg Clemens --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
