The original version of Node.js was released in 2009 and immediately gained popularity among developers. Technical experts around the world were amazed at how powerful, versatile, and fast this programming language could be. You can use it to create an internal application as well as a server.
Many companies are adding Node.js to their technology stack and one of the key reasons for this phenomenon is the speed and performance it provides. But what makes Node.js so fast? In this article, RexSoft Node.js experts will try to answer this question.
1. Single-threaded structure
NodeJS is single-threaded and asynchronous. Any input/output operation doesn’t block work. This means that you can read files, send emails, query a database, and do other things all at the same time.
2. V8 Virtual Machine
3. Event Loop
An event loop is a construct that is responsible for handling events in some programs. An event loop is almost always asynchronous in relation to the message source. When you call an input/output operation, NodeJS will retain the callback associated with that operation and continue to process other events. The callback will be invoked when the necessary data has been retrieved.
Node.js supports an event loop that handles all asynchronous operations for you. This allows you to use a non-blocking input/output loop where threads (in this case, serial instead of parallel), can manage multiple requests. If it cannot be processed, it is effectively “held” as a promise, which means that it can be executed later without holding up other threads. This whole process allows developers to manage more operations using less memory and resources.
To summarize, Node.js is lightweight due to its architecture built around event handling. It’s built to work as a web server, and it handles lightweight tasks very well. For example, a simple query like calculating something, or writing to a database will be executed very fast. And if we have too many requests and want to scale the system in Node, we can use Nginx or Apache webserver.
Many large companies have already had the opportunity to appreciate all the benefits of Node.js. A good example is Paypal, which used Node in its application. As it turned out, the application was created twice as fast with fewer people, the number of lines of code was reduced by 33%, and the number of files by 40%.
At the same time, the number of requests handled per second doubled, and the average response time was reduced by 35%. Node.js is an excellent choice for building well scalable applications, as long as you have a good Node JS development team in mind who knows how to use it.
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