Node js applications are widely used across the globes as they are fast, have high performance and have ability to handle too many sever requests at the same time. This helps in scaling the enterprise applications within the organization at the time of business growth. Nodejs development company develop highly scalable, event driven applications that can perform real time analysis tasks in business enabling business owners to make data driven business decisions to ensure success of their organization. With the real time monitoring system in admin dashboard we can check the performance of the team, and monitor the progress of work efficiently.
What is Node.js? Is it a programming language or framework?
Node.js is neither a programming language nor a traditional framework. It is a runtime environment built on V8 JavaScript engine of Chrome. By using Nodejs developers can run JavaScript on server side, making it easier to develop scalable, high performance application that can perform data intensive tasks on the server or network with ease by using event driven or non blocking input/output model. A lot of applications can be developed using Node.js like chat servers, online gaming and streaming services. Node.js is supposed to have largest open source libraries in the world making node.js highly extensive and versatile for a wide range of server side applications.
Who developed node.js? Why was it developed? When was it developed?
Ryan Dahl noticed that traditional web servers such an apaches http server were incapable of handling too many concurrent connections efficiently. Keeping this in mind he thought of creating a more scalable and lightweight server environment that could handle asynchronous I/O operations on the server. By leveraging the Google’s V8 JavaScript engine he was able to execute node js code on server side with non blocking and event driven architecture. This facilitated development of real time applications’ that require high concurrency and multiple files executing at the same time.
Why and when should we use Node.js applications?
If you are looking forward to make real time applications that require admin dashboard then we can make use of Node.js. For developing online games, streaming applications where we need event driven and non blocking input output operations on the network we can make use of node.js.
What makes Node.js efficient for application development?
Traditional web servers are capable of handling too many server responses hence we need JavaScript framework that runs on chrome V8 engine that can handle these requests concurrently. Node js is one such JavaScript environment that runs on chrome v8 engine. Node js comes with extensive JavaScript library files that help us in reusing the code by simple declaration at the time of need. It also has NPM popularly known as Nodejs package manager that holds all the essential files that is required for making the development task easier with node js. We can create a custom server on our local host computer few lines of Nodejs codes that when browsed on any browser with specific port number can view the results after execution of the Nodejs program. The method of renaming node js file is same as that of any other JavaScript file. But we need to download the Nodejs software and install in our computer. The extension of the file must be .js.
How to handle or manage events in Nodejs?
Every action we do on a computer creates an event like clicking, scrolling, typing, moving cursor, opening files, reading the contents of the file, and executing the scripts etc. Node js support object oriented programming where once declared can object fie specific event. For example readstream object fire opening and closing of the files in Nodejs environment. We can also use built in events where we can create, fire or listen for our own created events. If there are multiple events we can make use of event emitter object and use emit function to perform specific tasks.
Is Nodejs compatible with MySQL?
Nodejs can be utilized for creating dynamic web based applications that uses MySQL database. We can accept the input using form and submit the data to insert the data in specific table of database. Nodejs package managers allow us to interact with the database seamlessly with API that is safe, secure and easy to use.
Understanding global variables in Nodejs
Global variables are built in variable in Nodejs environment that can be accessed globally after declaration through function, and JavaScript files. Global variables can be utilized time and again to safeguard precious time in writing same lines of code again and again. Simply by calling global variable with function we can get the same implementation. Built in variables like process, console, __dirname, __filename, setTimeout, and require are regarded as global variables in NodeJS.
While global variables helps in minimizing the coding efforts however it can cause the performance related issues on the server if too many global variables are used it makes the program even more complicated and difficult to manage.
How to download and install Nodejs?
Nodejs Development Company recommends you to download the Nodejs software from its official site nodejs.org. The website has software for Linux, windows and Mac operating system. Download the one which you want to use and that matches the operating system installed on your computer. Once the executable file is downloaded then open it to run the installation wizard, click on I agree to the terms and condition and then to all positive response that comes to your screen. You can click on finish to complete the installation set up. Once the software is installed on your laptop or computer then open terminal or command prompt type node –v or npm –v to check the version of NodeJS or node js package manager installed on your system respectively.
To sum up we must say that Node js allows us to create dynamic web based applications that can communicate with MySQL database seamlessly with secured API and allows us to compute asynchrous server requests thereby making it efficient for handling events, and securing data at the same time.