[jbpm-users] jBpm questions

Hi there, some more generic questions about jBpm. *App. integration* 1) is it possible to integrate jBpm with non-Java applications? How? 2) is API the preferred way to integrate jBpm with Java applications? *Clustering* 3) If different servers running jBpm applications share the same database and processes' base, is there something special to be done regarding clustering? 4) how is the hibernate second level cache configuration done? Thanks in advance