They work together, but of course, they aren’t the same thing.
It helps make websites interactive and even build games. It’s lightweight, flexible, and powerful.
That’s right, we are gonna talk about Node.JS.
What is node.js and how it works?
Node.js is designed to build scalable network applications, many connections can be handled concurrently.
Upon each connection, the callback is fired, but if there is no work to be done, Node.js will sleep.
According to OpenJS Foundation, this is in contrast to today’s more common concurrency model, in which OS threads are employed.
Thread-based networking is relatively inefficient and very difficult to use.
Furthermore, users of Node.js are free from the worries of dead-locking the process, since there are no locks.
Almost no function in Node.js directly performs I/O, so the process never blocks. Because nothing blocks, scalable systems are very reasonable to develop in Node.js.
The Event Loop
Node.js uses only one thread, called the Event Loop.
The event loop is the true coding engineering treasure, allowing Node.js to perform non-blocking I/O operations.
When one of these operations completes, the kernel tells Node.js so that the appropriate callback may be added to the poll queue to be executed.
The Event Loop architecture allows a larger number of competing requests to be handled.
When compared to the traditional model, there is another advantage: the pricing.
The multi-thread model requires high computational consumption of servers.
To guarantee the creation and maintenance of threads for each request, the investment in hardware would be pretty significant.
This is a simplification, for more information about The Node.js Event Loop check out the official Node.js website.
Where can You use Node.js?
Node.js proved to be a tool with a lot of adaptabilities.
You can implement Node.js in different situations, with different objectives.
Run MockServers: Because of its very popular language in the web universe, Node.js can test different possibilities in different scenarios. You can mock systems that utilize HTTP or HTTPS with a proxy for recording requests sent by a system.
Scalable environments: Being capable of handling a large number of connections at the same time, Node is perfect in environments that have multiple concurrent connections.
How to install Node.js?
To learn about installing Node.js you can check out our installation tutorial in our community!