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What is MEAN Stack? All you need to know [ OverView ]

Last updated on 28th Oct 2022, Artciles, Blog

About author

Kowsalya Sekar (Mean Stack Developer )

Kowsalya Sekar has over four years of experience as a project estimator. She provides extensive expertise in HTTP/2, JavaScript, ES6, Micro Services, Performance Engineering, Docker, Kubernetes, AZURE, CI/CD pipeline, and MySQL Database design.

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    • In this article you will learn:
    • 1. What is a MEAN stack?
    • 2. How does MEAN stack work?
    • 3. MEAN stack components.
    • 4. Advantages of the MEAN stack.
    • 5. Disadvantages of the MEAN stack.
    • 6. When can MEAN stack be used.
    • 7. How secure is a MEAN stack?
    • 8. Conclusion.

What is a MEAN stack?

  • The MEAN stack is the JavaScript-based framework for developing a web applications.
  • MEAN is named after a MongoDB, Express, Angular, and Node,a four key technologies that make up layers of the stack.
  • MongoDB — document database.
  • Express(.js) — Node.js web framework.
  • Angular(.js) — a client-side JavaScript framework.
  • Node(.js) — a premier JavaScript web server.
  • There are variations to a MEAN stack such as MERN (replacing Angular.js with React.js) and a MEVN (using Vue.js).
  • The MEAN stack is one of the most popular technology concepts for the building web applications.

How does MEAN stack work?

MEAN stack architecture: The MEAN architecture is designed to make a building web applications in JavaScript and handling a JSON incredibly easy.

MEAN Stack

MEAN stack components:

  • Angular.js front end.
  • Express.js and Node.js server tier.
  • MongoDB database tier.

Advantages of the MEAN stack:

MEAN applications can be used in more ways with a cross-platform write-once approach.While a MEAN is particularly suited to real-time applications, particularly those running natively in a cloud and single-page (dynamic) web applications built in a Angular.js:

It can be used for other use cases are:

  • Workflow management tools.
  • News aggregation sites.
  • Todo and calendar applications.
  • Interactive forums.

Disadvantages of the MEAN stack:

  • JavaScript is the great modern language, but it wasn’t initially designed to build a back-end servers.
  • Since foundation of the MEAN stack is JavaScript, including a back-end server.
  • It might come with the concurrency and performance problems at scale due to the JavaScript nature.
  • Additionally, since a development opportunity is so rapid, business and server logic might suffer from a poor isolation.
  • Making potential spaghetti code and bad practices a reality along way.
  • Finally, although there are more guides and tutorials out there, they generally will not include a concrete JS coding guidelines appropriate for this stack.
  • Therefore, something that worked really well for the one application might surface issues for another.
MEAN Stack Architecture

When can MEAN stack be used?

  • Three -tier stack pattern, including a display tier (Angular.js), application tier (Express.js and Node.js), and a database tier (MongoDB).
  • If building a JavaScript application, particularly in the Node.js, then should give a MEAN serious look.
  • MongoDB stores data in the JSON-like format (BSON, a binary JSON extension), a MongoDB Query Language (MQL) is explained in JSON, and its command line interface (CLI) is JavaScript interpreter.
  • Using MEAN stack with a MongoDB Atlas.
  • The MongoDB Node.js driver makes working with the MongoDB from inside a Node.js script simple and an intuitive for developers — saving developers time and also increasing their productivity.
  • Next, need a MongoDB database. The simplest way to get started with MongoDB is to create free cluster in a MongoDB Atlas.
  • MongoDB’s fully managed, multi-cloud document database as service.

How secure is a MEAN stack?

Recommend using a MEAN stack with MongoDB Atlas, since Atlas has been built-in credentials, a firewall, and end-to-end encryption, which is best foundation for securing a MongoDB.


There are more technologies that full-stack developers work with, but over a course of time, IT specialists have come to most optimal set of tools that allows delivering a best possible results.This set is called a MEAN stack, which consists of a MongoDB, Express.js, Angular, and Node.js.

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