An Introduction to Node.js

Introduction
Node.js is an application framework and sometimes is referred to as a runtime, through which applications are built using the JavaScript programming language. Node.js is well known for its speed, due to the fact that it is non-blocking. Further, being non-blocking means one request does not wait for the other request to finish (i.e it is asynchronous). The asynchronicity is what makes Node.js the framework that it is today in terms of throughput, unlike Java application servers which are mostly blocking each request that is bound to a thread and as soon as there are no more threads available the server almost always stops receiving requests.
In this article, we will discover some aspects of Node.js. We will do so by discussing some topics such as: uses cases of Node.js, how Node.js achieves concurrency, and its main design pattern.  

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