dddd – Tarik Billa

Alternatives to many-to-many relationships with CQRS

August 2, 2023 by Tarik

Supposing that both are aggregates, copy whatever author data you need into the Book aggregate upon adding the new book so that any subsequent commands have enough author data to work with. Now if the Author aggregate needs information about the books written by the author, then it could “subscribe” to the NewBookAdded event (technically … Read more

Using Kafka as a (CQRS) Eventstore. Good idea?

September 30, 2022 by Tarik

I am one of the original authors of Kafka. Kafka will work very well as a log for event sourcing. It is fault-tolerant, scales to enormous data sizes, and has a built in partitioning model. We use it for several use cases of this form at LinkedIn. For example our open source stream processing system, … Read more