Develop essential programming & development skills with expert instruction and practical examples.
In this course you will learn how to create Spring Boot microservices that comply to the CQRS and Event Sourcing patterns. You will not use any CQRS framework, but you will write every line of code that is required to effectively create your own CQRS and Event Sourcing framework using Java and Apache Kafka. While this might sound a little daunting, you will be carefully guided step by step, and gain all the know-how and confidence to become an expert in CQRS and Event Sourcing.
By the end of this course you will know how to:Handle commands and raise events. Use the mediator pattern to implement command and query dispatchers. Create and change the state of an aggregate with event messages.
Implement an event store / write database in MongoDB. Create a read database in MySQL. Apply event versioning.
Implement optimistic concurrency control. Produce events to Apache Kafka. Consume events from Apache Kafka to populate and alter the read database.
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