What is Node.Js?
It is used for server-side programming, and primarily deployed for non-blocking, event-driven servers.
Application of Node.JS:
- Real-Time Chats
- Complex Single-Page applications
- Real-time collaboration tools
- Streaming apps
What Is Node.js Written In?
Features of Node.JS:
- It’s easy to get started and can be used for prototyping and agile development
- It provides fast and highly scalable services
- Source code cleaner and consistent.
- Large ecosystem for open source library.
- It has Asynchronous or Non-blocking nature.
Advantages of Node.JS:
- Easy Scalability: It is easily scaling the application in both horizontal and vertical directions. We can also add extra resources during the scalability of the application.
- Real-time web apps: If you are building a web app you can also use PHP, and it will take the same amount of time when you use Node.js, But if I am talking about building chat apps or gaming apps Node.js is much more preferable because of faster synchronization. Also, the event loop avoids HTTP overloaded for Node.js development.
- Fast Suite: Node.Js runs on the V8 engine developed by Google. Event loop in NodeJs handles all asynchronous operation so Node.Js acts like a fast suite and all the operations can be done quickly like reading or writing in the database, network connection, or file system
- Advantage of Caching: It provides the caching of a single module. Whenever there is any request for the first module, it gets cached in the application memory, so you don’t need to re-execute the code.
Components of Node.js:
- Node CLI
- Node Modules
- Development Tools and Frameworks
Requests: Depending on the actions that a user needs to perform, the requests to the server can be either blocking (complex) or non-blocking (simple).
Node.js Server: The Node.js server accepts user requests, processes them, and returns results to the users.
Event Queue: The main use of Event Queue is to store the incoming client requests and pass them sequentially to the Event Loop.
Thread Pool: The Thread pool in a Node.js server contains the threads that are available for performing operations required to process requests.
Event Loop: Event Loop receives requests from the Event Queue and sends out the responses to the clients.
External Resources: In order to handle blocking client requests, external resources are used. They can be of any type ( computation, storage, etc).
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