What is the Listen to Yourself Pattern? | Designing Event-Driven Microservices

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The Listen to Yourself pattern is a technique to improve latency, while ensuring data consistency in microservices. It is implemented by having a microservice emit an event to a platform such as Apache Kafka, and then consuming its own events to perform internal updates. Since it separates Kafka and database writes into different processes, it can be used to avoid data consistency issues caused by the dual-write problem. However, it also allows microservices to respond quickly to requests by deferring processing to a later time.

To learn more about the dual-write problem, check out the Designing Event-Driven Microservices course on Confluent Developer: https://cnfl.io/microservices-101-mod...

RELATED RESOURCES
► What is the Dual Write Problem?:    • What is the Dual Write Problem? | Designin...  
► What is the Event Sourcing Pattern?:    • What is the Event Sourcing Pattern? | Desi...  
► What is the Transactional Outbox Pattern?:    • What is the Transactional Outbox Pattern? ...  
► Microservices course playlist: https://bit.ly/designing-event-driven...
► Microservices: An Introduction https://cnfl.io/3ZMt3up
► Event-Driven Microservices Architecture: https://cnfl.io/48FSYbj
► Migrate from Monoliths to Event-Driven Microservices: https://cnfl.io/3tsqlhu
► Get Started on Confluent Developer: https://cnfl.io/48FnKRB

CHAPTERS
00:00 - Intro
01:07 - What is the dual-write problem?
01:30 - What is the listen-to-yourself pattern?
01:51 - How does the listen-to-yourself pattern eliminate dual writes?
02:24 - When are the events processed in the listen-to-yourself pattern?
02:55 - Is the listen-to-yourself pattern eventually consistent?
03:43 - How can we deal with eventual consistency?
04:14 - How do we validate events?
05:02 - Closing

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