[jboss-user] [Clustering/JBoss] - Factors to consider for clustering an application ???

[PriyaP]

Hi - I have a web application which has the following: 
Web (Struts) + EJB 2.0 (Stateless, Stateful and Entity) + Custom DAO

What are the factors i should consider or plan before I cluster the application. 

I hope we should consider these: 
1. EJBs
2. Singleton classes (I am not sure how changes made in singleton classes in one server will be reflected in the other). 
3. File handling: A component in one server is changing the content in one server. I dont know how it will be reflected in the other server. Should the file be stored in a common place so that all server has access to it. Or is there any way that the files will be automaticaly migrated if you place it in a special folder. 

Kindly let me know if I am missing any other factors. 

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