LIFE CYCLE OF MEAN STACK DEVELOPER
MEAN is a complete software package. It uses JavaScript frameworks for front-end and back-end tools, in addition to the library. The database is a document-oriented NoSQL database. So, the MEAN stack is a full stack web development tool. Helps develop fast and efficient web applications. They are mainly used to create dynamic websites

A MEAN Stack developer is an expert on MongoDB, Express.js, Angular.js, and Node.js. They are JavaScript experts and use HTML, CSS, and JavaScript to handle front-end operations and back-end server scripts. MEAN is just the name given to the stack like Django for Python. MEAN is not the stack order. It’s just an acronym. Based on the three-tier model, the stacks will be organized as such: AngularJS framework for client-side coding. This is followed by NodeJS, which is the toll for server-side scripts.
Technologies That Come Under MEAN
  • MongoDB:: It manages the database of web applications.
  • Express.js:It is used to build APIs for web applications.
  • Angular.js: It is an important development framework maintained by Google.
  • Node.js::It is used to manage the server-side.
MongoDB
It is one of the most powerful NoSQL databases and systems on the market. It is an open-source database that uses a document-oriented data model. It is an unstructured query language.
NoSQL tool means that it doesn’t use the usual rows and columns that you associate so much with relational database management. It is an architecture built on collections and documents. This database uses a document storage format called BSON, which is a binary style of JSON documents. The data model followed by MongoDB is a very elastic model that allows you to combine and store data of multivariate types without compromising powerful indexing options, data access rules, and validation. There is no downtime when you want to change templates dynamically. This means that you can focus more on making your data work harder instead of spending more time preparing the data for the database.

Express Js
Express.js is a Node.js framework, which means most of the code is already written for programmers to work with. You can create a single, multipage, or hybrid web application with Express.js. Express.js is lightweight and helps organize server-side web applications in a more organized MVC architecture.

It is important to learn JavaScript and HTML to use Express.js. Express.js simplifies the management of web applications. It is part of a JavaScript-based technology called the MEAN software stack which stands for MongoDB, Express, AngularJS, and Node.js. Express.js is the backend part of MEAN and handles routing, sessions, HTTP requests, error handling, etc.Express.js can cut coding times in half by helping us build efficient web applications. This not only reduces the time but also reduces the effort required to create web applications using its various functions.

Angular Js
Angular JS is a JavaScript framework this is used to build web applications. It can be easily used, changed, and shared with anyone. This is developed by Google. This is an excellent framework for building single-phase applications and lines of business applications.

Features:
  • Express.js is a Node.js framework, which means that most of the code is already written for programmers to work with. You can create a single, multipage, or hybrid web application with Express.js. Express.js is lightweight and dependent injection: Dependency Injection specifies a design pattern in which components receive their dependencies instead of coding them into the component.
  • Bidirectional data binding: AngularJS creates a bidirectional data binding between the selected item and the order Prop model. order Prop is used as the input for the order by filter.
  • Test: Angular JS is designed in such a way that it can be tested from scratch. Therefore, it is very easy to test any component through unit testing and end-to-end testing.
  • Model View Controller – In Angular JS it is very easy to develop a neat MVC application. Simply divide the application code into MVC components, namely the model, the view, and the controller.
  • It is important to learn JavaScript and HTML to use Express.js. Express.js simplifies the management of web applications. It is part of a JavaScript-based technology called the MEAN software stack which stands for MongoDB, Express AngularJS, and Node.js. Express.js is the backend part of MEAN and handles routing, sessions, HTTP requests, error handling, etc.

Node.js
It is used for developing a wide array of software and systems. Basically, used for no non- blocking, event drivers’ servers and due to its single threaded nature.

Features:
  • Asynchronous and Event Driven– All APIs of Node.js library is asynchronous, that is, non-blocking. It essentially means a Node.js based server never waits for an API to return data. The server moves to the next API after calling it and a notification mechanism of Events of Node.js helps the server to get a response from the previous API call.
  • Very Fast-Being built on Google Chrome’s V8 JavaScript Engine, Node.js library is very fast in code execution.
  • Single Threaded but Highly Scalable-Node.js uses a single-threaded model with event looping. the Event mechanism helps the server to respond in a non-blocking way and makes the server highly scalable as opposed to traditional servers which create limited threads to handle requests. Node.js uses a single-threaded program and the same program can provide service to a much larger number of requests than traditional servers like Apache HTTP Server.
  • No Buffering-Node.js applications never buffer any data. These applications simply output the data in chunks.

MEAN Stack Architecture
MEAN is a free and open-source JavaScript software stack for building dynamic websites and web applications. It is very simple and easy to use for the back end and the front end. In other technologies, different languages are used for the front-end and the back-end, however, MEAN is written in a single language for server-side and client-side execution.

The operation of MEAN Stack is explained below in the figure correctly MEAN Stack Architecture Explanation

  • When the client makes any request, it is firstly processed by the AngularJS. AngularJS is a client-side language in JavaScript.
  • After that, the request enters phase 2 which is NodeJS. NodeJS is a server-side language in JavaScript.
  • In phase 3, which is ExpressJS makes the request to the database.
  • MongoDB retrieves the data & returns the response back to the ExpressJS.

Skills required by a MEAN stack developer
  • HTML, CSS and JavaScript programming languages.
  • CSS and JavaScript based frameworks.
  • Basic understanding of the client-side processes and requirements.
  • Basic understanding of the server-side processes and requirements.
  • Basic understanding of the architecture and workflow.
  • MEAN stack expertise- ability to work with Angular.js, Node.js, Express.js and MongoDB. If not Angular, then you need to know ReactJS or VueJS
  • Familiar with package manager-npm.
  • Familiarity with Git and design framework like MotionUI is desirable.
  • Time-management, Critical thinking and communication skills are expected.

Future scope
  • From client site to server site, MEAN stack development makes use of the same code.
  • MEAN stack is open source software, which accelerates the application development and makes the process simple.
  • Using Node JS, deploying applications is easy and simple as the required version of the web server is clearly defined along with the rest of runtime dependencies.
  • Mongo DB allows for speedy addition, deletion or editing of data as it does not need any predefined database schemas and rules to establish field regulations.
  • The apps developed with MEAN stack run smoothly with reduced time for page loading due to the use of single programming language like JavaScript.
  • MEAN stack can run on multiple operating systems like Windows, MAC OS and Linux due to the use of Node JS.

MEAN STACK Development is booming field in Web development. A mean stack developer is also known as full stack developer because they can do both front end and back end development. So, if you are MEAN STACK developer then you can create the both ends. You not need the other developer for front end or back end. So, there are good opportunity in future if you have good knowledge about MEAN STACK. Also, your company will pay you more because you are two face (Front end + Back End) in one person.

What is the salary of a MEAN stack developer abroad?
The average salary in Australia is A$112,169/-. The highest recorded salary is A$208,000/-. The average salary is €49, 230/- in the United Kingdom. The highest recorded salary is €106,000/-.

The salary in the United States is $111302/-. The highest recorded salary is $216,000/-. The salary is subject to change depending upon the location, the relevant experience,and the skills. Salary records obtained from indeed.com, au.indeed.com, indeed.co.uk.

What is the salary of a MEAN stack developer in India?
The national average of a JavaScript/MEAN stack developer in India is Rs. 5,28,436/- per year. The highest recorded salary is around 15 Lakhs*. The salary is subject to change depending upon the location, the relevant experience, and the skills. Salary records obtained from Indeed.co.in.

Summary
  • The MEAN stack developer is a subset of a full stack web developer.
  • MEAN full stack web developer is also an in-demand job and the developers get a high salary.
  • They are experts in JavaScript. They are adepts at working with MongoDB, AngularJS, NodeJS.
  • Additionally, knowledge of ReactJS and VueJS is desirable.
  • You need to learn an only JavaScript programming language and build upon it.
  • It reduces the amount of code being written with isomorphic code.
  • In addition to the stack, you should learn Git and some design tools.
  • You can use MEAN stack to create Single page Applications as well as complex web sites and real-time applications.
  • There are a lot of advantages to being a MEAN stack developer over other stacks, like flexibility, scalability and very user-friendly.