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Node.js is a lightweight web container that is a strong option for development of micro services and as a server to mobile and single-page web applications. Due to the asynchronous nature of node.js, developers are turning to promise libraries to simplify their application code. As the use of promises mature within the node.js community, we expect to see more applications developed for node.js. For those teams that are reluctant to try node.js in production, it is still worthwhile to consider node.js for development tasks like running JavaScript tests outside of the browser or generating static web content from tools like CoffeeScript, SASS, and LESS.

For many years JavaScript was predominantly used as a client side Web programming language, but a lightweight language such as JavaScript can easily be embedded in different environments, including the server side. Node.js allows developers to write applications in JavaScript on both client and server sides. Since most servers spend the majority of their time waiting for I/O operations, Node.js¡¯ event driven non-blocking architecture is very efficient. Unlike threadbased solutions, Node.js does not need to wait for I/O operations to complete while processing incoming requests, making it a good choice when implementing high performance services.