Event Carried State Transfer: Keep a local cache!

What's Event Carried State Transfer and what does it problem does it solve? Do you have a service that requires data from another service? You're trying to avoid making a blocking synchronous call between services because this introduces temporal coupling which availability concerns. So what's the alternative? I'll cover one solution which is Event Carried State Transfer.

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0:00 Intro
0:36 Blocking Synchronous
2:00 Notifications
3:41 Event Carried State Transfer
5:57 Versioning

#eventdrivenarchitecture #softwarearchitecture #codeopinion