Book Image

TypeScript Microservices

Book Image

TypeScript Microservices

Overview of this book

In the last few years or so, microservices have achieved the rock star status and right now are one of the most tangible solutions in enterprises to make quick, effective, and scalable applications. The apparent rise of Typescript and long evolution from ES5 to ES6 has seen lots of big companies move to ES6 stack. If you want to learn how to leverage the power of microservices to build robust architecture using reactive programming and Typescript in Node.js, then this book is for you. Typescript Microservices is an end-to-end guide that shows you the implementation of microservices from scratch; right from starting the project to hardening and securing your services. We will begin with a brief introduction to microservices before learning to break your monolith applications into microservices. From here, you will learn reactive programming patterns and how to build APIs for microservices. The next set of topics will take you through the microservice architecture with TypeScript and communication between services. Further, you will learn to test and deploy your TypeScript microservices using the latest tools and implement continuous integration. Finally, you will learn to secure and harden your microservice. By the end of the book, you will be able to build production-ready, scalable, and maintainable microservices using Node.js and Typescript.
Table of Contents (17 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Communication styles


A microservice ecosystem is essentially a distributed system that is running on multiple machines. Each service instance is just another process. We saw in the earlier diagram different process communications. In this section, we will learn about communication styles in much more detail.

A service consumer and service responder may communicate through many different types of communication styles, each one targeting some scenario and outcome in mind. The communication types can be categorized into two different aspects.

The first aspect deals with the type of protocol, whether it is synchronous or asynchronous:

  • Communication invoked via commands and queries such as HTTP are synchronous in nature. The client sends a request to wait for a response from the service. This waiting is language-dependent, that is, it can be synchronous (languages such as Java) and it can be asynchronous (response can be processed via callbacks, promises, and so on, in our case, Node.js). The important...