Findings: Common Themes
Event Consumer(s) and Event Producer(s)
Intermediary “channel” abstraction
- Queues, Topics, Items, Events, Push, Pull
QoS
- privacy, authentication, authorization, latency
Variants
- durable, once, at-least-once, at-most-once, maybe
Event subsystem is not unique to Printing
- No need to invent a print-specific mechanism
- Only events semantics, groupings, and optimizations are unique