I'm looking for a general, language agnostic, higher-level/theory of clustering book. Think Principles of Transaction Processing, Gang of Four, Patterns of EAA, etc. These books present general ideas, knowledge, and patterns about a particular aspect of application development.
I'm not looking for something hardware centric, nor books about configuring specific app servers or frameworks (I can find JBoss or Terracotta books on Amazon easily enough).
Usually I rely heavily on the References sections at the end of Kent Beck, Martin Fowler, Eric Evans books, and it's always served me well, but there's no recommendations on this specific topic.
Thanks!