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

Developing some microservices for a shopping cart 


In this section, we will develop some microservices for a shopping cart, uniquely identified by their business capabilities. So, let's get a quick overview of our current problems before getting our hands dirty. The shopping cart monolithic was going well, but with the advent of digitalization, there was a huge increase in transaction volumes—300-500 times compared the original estimates. The end to end architecture was reviewed and it had the following limitations, based on which the microservice architecture was introduced:

  • Firmness and sturdiness: The firmness of the system was greatly impacted due to errors and stuck threads, which forced the Node.js application server to not accept any new transactions and do a forceful restart. Memory allocation issues and database lock threads were major problems. Certain resource-intensive operations were impacting the entire application and the resource allocation pool was always consumed.
  • Deployment...