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+1  Q: 

What is SEDA (Staged Event Driven Architecture)?

SEDA: An Architecture for Highly Concurrent Server Applications

"SEDA is an acronym for staged event-driven architecture, and decomposes a complex, event-driven application into a set of stages connected by queues."

I understand that it's an architecture and that there are many implementations of SEDA (see the Wikipedia article). What is a "stage"? Can someone give a thorough high-level summary of a staged event-driven architecture, and how it differs from traditional (unstaged?) event driven architectures?

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