Why Use Node.js?
Why use node.js?
How it Works
Node.js is event-driven and the server comprises a single thread that processes events, one after the other. For instance:
- When one new request comes in, it is one event.
- When the server begins processing this even, and there is an I/O blocking operating, the server registers a callback function, instead of waiting for event completion
- The server immediately picks up the new event or request processing
- After the completion of the I/O operation, the server processes the operation by callback execution.
- Node.js runs on a single-thread and continues to process many requests of simultaneous connections
Advantages of Using Node.js
Node.js has various advantages, which include:
One of the major advantages of using Node.js is that as a developer, you will find it easier to scale the applications in both horizontal and vertical directions. You can scale the applications horizontally by adding additional nodes to the already existing system.
Easy to Learn
Node.js is known as a full-stack JS as it serves clients and server-side applications. With Node.js, there is no need to hire different developers for front-end and back end developers, which saves you a lot of valuable effort, time and money.
Traditionally, I/O operations consume a huge chunk of memory and are hard to program. When Node.js needs to perform any I/O operation, it sends an asynchronous task to the event loop, together with a callback function and continues to the execution of the program. When it completes the asynchronous operation, the event loop returns to the async task to execute the callback.
Large and Active Community Support
Node.js, as mentioned before has an open-source runtime, which also provides one with the ability to cache single modules. When there is a request for the first module, it is cached in the application’s memory. A developer is not obligated to re-execute the codes because caching lets applications load web pages much faster and respond to the user faster.
Some of the Node.js frameworks allow serializing functions and mapping, which keeps your code organized. You do not have to build complex functional structures whereby you embed them into each other. The framework automatically groups them and you are allowed to access the needed function without having to keep using the callback command.
In a framework, you are allowed to computerize all repetitive operations, schedule actions and share any modification records. All you need to do is to specify the code requirements, and the framework does the rest of the hard tasks.
Single Programming Language
App development Freedom
Process Several Requests at Once
Node.js assists you in processing several requests at once. It can easily manage simultaneous requests in comparison to other platforms such as Python and Ruby on Rails.
Node.js developers have extended support for different tools. For instance, you can test the platform’s source code via Jasmin and other tools.
You may be making use of a rich client framework such as Backbone, Ember, and Angular) and a REST-full (Representational State Transfer) server-side API which moves JSON to and fro. REST server provides you with access to resources and the client accesses and modifies resources via FTTP protocol.
It's very extensible
The Node.js platform is very extensible, meaning you can easily customize it and extend it as per requirement. You can use JSON to provide you with scope for data exchange between the client and the internet server. It has in-built APIs that can develop TCP, DNS< HTTP, and other servers.
Where Node.js can be used
There are several instances when Node.js can be utilized:
Chat is the most common multi-user and real-time application. The chat app is the
The best use for Node.js as it is light, data-intensive with low computation, and high traffic app, which runs across several distributed devices.
In typical platforms, HTTP queries and responses are considered as isolated cases and are called streams. You can access files as they are uploading, as data comes via a stream and you can process it using an online mode.
Node.js is used as s server-side proxy and it can manage many connections all at once without blocking. Node.js is useful when it comes to proxying various services that have various responds times or data collection from different sources.
Node is excellent with real-time apps. It is great in exposing data from object databases such as document DB and Azure. JSON’s stored data, allows Node.js to operate without mismatches or data conversion.
npm is the package manager for Node.js, and it is fast, consistent and robust. It is excellent in the specification and installation of project dependencies. It isolates packages from the rest of the projects, this preventing version conflicts. It manages global installs of platform-dependent binaries and shell commands.
If Node.js works well in various connections, it follows that it works well at multi-user, real-time web apps such as games and chats. The real-time ability comes via the utilization of a web socket protocol. A web socket is a two-way communication channel that exists between the client and their server. The server pushes data to the client as easily as the client pushes data to the server.
Platform-as-A -service (PaaS) providers reduce deployment to one command.
Node.js is a platform typically used for event-driven, non-blocking servers because of its single-threaded qualities. It is utilized for back-end API services and conventional websites. It was initially built for push-based and real-time architectures.