Node offers an alternative solution to the common concurrency model for runtime, where OS threads are necessary, and often inefficient. Node.JS users are free from concerns about dead-locked processes, as there are no locks built into the design. There's almost no function in the Node that directly performs I/O, which means the process never blocks, and systems can scale naturally.
How Does Node.JS Work?
Node.JS is designed to work very similarly to systems like Python Twisted and the Ruby Event Machine. However, the Node application takes the concept of the "event" model a little further, presenting an event loop as a specific runtime construct instead of as a library. In other systems, there is usually a blocking call that starts the event loop, and then behaviour can be determined through call-backs at the end and beginning of scripts.
In Node, there are no start-event loop calls. Instead, the system enters the event loop after the input script is executed and exits the event loop when there are no more additional call-backs remaining. Additionally, HTTP is treated as a first-class citizen in Node, with low latency and streaming in mind. As such, Node is very well suited to the foundation of a web framework or library.
What's more, just because Node is a thread-less runtime solution, doesn't mean that there aren't opportunities to access multiple cores in a developer environment. Child processes are available through the child_process-fork API, and they're built on the same interface as a cluster module, so you can share sockets and enable additional load balancing within your network.
The Benefits of Node.JS
Node.JS empowers today's busy and agile organisations to create quick and effective network applications that can handle various parallel connections using increased throughput. What's more, Node.JS doesn't not slow the working processes within a business, but you will need to make sure that you're careful when you write the codes if you want to get the most out of the formula. For an insight into the benefits of Node.JS, you only need to look at PayPal, a company that managed to achieve a 35% reduction in their response times with the Node.JS applications.
Making the Most of Node.JS
Often, the mark of an ethical framework is a great community, and that's something that Node.JS has plenty of. Besides, its fantastic core competencies, Node. JS also boasts a flourishing open-source community that delivers a range of fantastic modules to the marketplace on a regular basis, helping the Node.JS application to keep shining in a competitive environment. For instance, one recent development is the Socket.io module, which allows for constant communication between the server and client, allowing for real-time updates to be pushed instantly to clients.
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