Event-Driven/Event-Sourcing/Event Modeling Architecture

Tools

Miro Event Modeling Toolkit: Build event-driven systems with visual Event Modeling directly in Miro. Design, collaborate, and generate code from your event models.

Reading

Articles/Blogs/Essays

Compilers Aren't Just for Programming Languages
Exploring CQRS and Event Sourcing - Dominic Betts, Julián Domínguez, Grigori Melnik, Mani Subramanian, Fernando Simonazzi (EPUB, PDF - code samples)
Six Event-Driven Archicture Patterns: Part 1 Part 2
"The Case for Event-Driven Architecture with Mediator Topology"
The What, Why, and How of Event-Driven Programming
What do commands do in Event Sourcing
Handling events coming in an unknown order

Rahul Krishnan's blog:

"The Laws of Event Sourcing" - Real World Event Sourcing

All Events are Immutable and Past Tense
Applying a Failure Event Must Always Return the Previous State
All Data Required for a Project Must Be on the Events
Work Is a Side Effect
All Projects must Stem from Events
Never Manage More than One Flow per Process Manager
Process Managers Must Not Read from Projections
Event Schemas Are Immutable
Different Projectors Cannot Share Projections
Never Test Internal State

Complex Event Processing (CEP)

Tags: architecture event

Last modified 23 December 2025