🌎 Awesome Event Patterns

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Collection of links, videos and things to help with your event-driven architecture event design and patterns.

Contributions welcome!

Table of Contents

• Videos
• Written resources

Videos

• DDD Europe 2020 Keynote by Udi Dahan - Udi Dahan gives a great talk about DDD and also goes into event patterns talking about internal and external events within your domains.

• Events Everywhere! Different Type of Events in a Distributed System - Great talk with James Hickey and Derek Comartin as they talk about types of events in distributed systems.

• Message Naming Guidelines - Derek Comartin gives a great video and walkthough on naming guidelines for events.

• The Many Meanings of Event-Driven Architecture - Timeless classic from Martin Fowler as he goes into event patterns, examples and tradeoffs.

Written resources

• Segreated Event Layers - Mathias Verraes talks about internal events within a domain and using streams to consume them and expose different events.

• Patterns for Decoupling in Distributed Systems: Fat Event - Mathias Verraes goes into what state in an event could look like, the downsides and things to consider.

• Patterns for Decoupling in Distributed Systems: Passage of Time Event - An interesting event pattern to replace cron jobs and scheduled commands with event to indicate teh passage of time.

• Patterns for Decoupling in Distributed Systems: Summary Event - Rather than emitting a stream of events from a domain why not emit a single summary event at the end? Could you place your events with summary events?

• The different types of events in event-driven systems - Great read by Frank de Jonge as he goes into three types of events for our EDA applications, the domain event, trigger/signal event and RESTful or "Fat" event.

• Use a message envelope - Another great read by Frank de Jonge as he goes into message envelopes. Talks about what goes into an event, domain boundaries, decorators and much more.

• CQRS Documents by Greg Young - Very detailed document around CQRS and Greg goes into domain events, events as storage and much more

• Thin vs Fat Integration Events - Derek Comartin has some great content around event-driven architectures, in this blog post he walks though fat vs thin integration events with videos to support. Check out his YouTube channel too!

• The event notification pattern - Oskar uit de Bos gives us some great insight and thoughts into event notification pattern, recommended read!

• The Event-Carried State Transfer pattern - Another great read by Oskar uit de Bos, as he gives into the ECST pattern and highlights the good, bad and ugly.

• How Should My Event Be Designed? Some Thoughts on Event-Based Systems - Gökhan Gökalp gives us his thoughts on Event-Based systems and designs for our events.

• Event Collaboration And Event Sourcing - Lutz Hühnken looks at some event-driven architecture terminology that is often used very liberally, and provides a clear distinction.

• Introduction to Designing Events and Event Streams - Adam Bellemare gives us a great guide and detailed walkthrough of event streams and event design patterns.