Book Image

Microservice Patterns and Best Practices

By : Vinicius Feitosa Pacheco
Book Image

Microservice Patterns and Best Practices

By: Vinicius Feitosa Pacheco

Overview of this book

Microservices are a hot trend in the development world right now. Many enterprises have adopted this approach to achieve agility and the continuous delivery of applications to gain a competitive advantage. This book will take you through different design patterns at different stages of the microservice application development along with their best practices. Microservice Patterns and Best Practices starts with the learning of microservices key concepts and showing how to make the right choices while designing microservices. You will then move onto internal microservices application patterns, such as caching strategy, asynchronism, CQRS and event sourcing, circuit breaker, and bulkheads. As you progress, you'll learn the design patterns of microservices. The book will guide you on where to use the perfect design pattern at the application development stage and how to break monolithic application into microservices. You will also be taken through the best practices and patterns involved while testing, securing, and deploying your microservice application. At the end of the book, you will easily be able to create interoperable microservices, which are testable and prepared for optimum performance.
Table of Contents (20 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Understanding the pattern


The aggregator design pattern is a pattern with a simple concept, but the applicability can be complex, depending on the scenario to which it applies. If we look at the real world, we will see that the aggregator design pattern is one of the most applicable and scalable patterns.

Obviously, there must be a need for the use of the aggregator design pattern. Let's look at our current microservices. We built a microservice to manipulate data from the UsersService and three other microservices to manipulate the data from the News microservice.

When we deal with our UsersService, we can say that, so far, this microservice is sufficient in itself. The business of a microservice is very simple and consists of registering and exposing user data; there is no business requirement that makes us think of modifying this microservice currently.

We can't say the same when it comes to the News microservices. One of the clients of our microservices is the portal main screen, and, for...