Introduction
applications that run atop nodes. Other web technologies that can be used instead of node include JSP, Spring MVC, ASP.NET, HTML, Ajax, jQuery, etc. Js uses Single Threaded Event Loop Model design to support numerous concurrent clients. To accommodate several concurrent clients, the technologies in the list above adhere to “Multi-Threaded Request-Response” architecture. If you want to learn more about Node JS Training in Chennai with certification and placement support for your career enhancement.
What Is Node JS?
Scalable network applications can be created using Node.js, an event-driven asynchronous JavaScript runtime. Numerous connections can be managed at once in the following “hello world” example. Each time a connection is made, the callback is activated, but if nothing needs to be done, Node.js will sleep.
Why is Node.js a single-threaded language?
Single thread: The Multi-Threaded Request/Response Stateless Model is not adhered to by the Node JS Platform. The Single-Threaded Event Loop Model is used. The main source of inspiration for the Node JS Processing paradigm was the JavaScript Event-based Model with JavaScript Callback Mechanism. Node.js can so easily manage more concurrent client requests. The Node.js processing model’s event loop, as depicted in the figure below, is its central component.
Node.js uses a single-threaded event loop model design for the following reasons:
- Node.js was initially developed as an experiment in asynchronous processing. The idea was that performing asynchronous processing on a single thread could offer greater performance and scalability than the typical thread-based implementation under typical web loads, especially when the application isn’t performing CPU-intensive tasks. Node.js can also support thousands more concurrent connections than Apache, IIS, or other thread-based servers.
- Node.js’ single-threaded, asynchronous nature adds to the complexity, but threading is worse in terms of the time required to design an application, the expense of development, deadlocks, priority inversions, and any other issues that arise throughout an application’s life cycle.
- Another well-known and frequently criticized problem with the one thread per request model for servers is that it doesn’t scale as well as the event loop thread model in a number of scenarios. They are not scalable as the application expands to handle increasing demand and the addition of new features.
- due to the fact that Node.js uses a single-threaded, event-based approach with a JavaScript callback system. Because Ryan Dahl is not a fan of JavaScript, node.js is single-threaded and similar to JavaScript but is not entirely JavaScript code. This means that tasks that are performed asynchronously, such as network calls, file system operations, DNS lookups, etc., are actually not handled by the main thread and are instead implemented in C++.
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Conclusion
I hope that this blog helps you to get some valuable information about Node JS. If you want to learn more about Node JS, then join FITA Academy because it provides you with training. From real-time working experts with certification and placement support for your career enhancement.