Building Event-Driven Microservices, 2nd Edition

Chapter 22. Conclusion

Event-driven microservice architectures provide a powerful and flexible approach to solving business problems. Event streams provide well-defined low-latency data to whichever services need it, as many times as they need it. Microservices enable you to create purpose-built services using the technologies best suited for the job, including databases, languages, and frameworks. Together, they enable resilient decoupled services that communicate durably and asynchronously, leaving you open to choosing the best options for solving your business use cases.

Here is a quick recap of everything covered in this book, as well as some final words.

The Data Communication Structure

The data communication structure is what allows you to get access to important business data from across your company, without having to build or rely on ad-hoc solutions.

Event brokers, as part of an event-driven architecture, enable you and your services to access any of the data they need, provided it has been written to an event stream. They permit a strict organization of data, can propagate updates in near–real time, and can operate at truly enormous scale. The event broker is agnostic to the business logic of the producers and the consumers. It simply focuses on resiliently storing events and distributing them to the subscribed consumers.

By writing events to an event stream, the producer services provide readily available, low-latency, and decoupled access to events for all interested ...