In this chapter, we studied the key concepts around microservices, as well as the best practices to be followed when designing high-quality software components towards building robust and resilient software architectures that enable us to respond quickly to the business needs.

You have also learned the key benefits such as the possibility of using the right language for the right service (technology heterogeneity) on the microservices-oriented architectures as well as some of the pitfalls that could make our life harder, such as the overhead on the operational side caused by the distributed nature of the microservices-oriented architectures.

Finally, we discussed why Node.js is a great tool for building microservices, as well as how we could benefit from JavaScript to build high-quality software components through techniques like API aggregation.

In the following chapters, we will be developing the concepts discussed in this chapter, with code examples and further explanation about the topics I have learned over the years.

As explained before, we will focus on the V8 version of JavaScript, but I will provide some hints on how to easily write upgradeable components to embrace ECMAScript 6.