The document outlines the LAMP stack's limitations and introduces the MEAN stack as a full-stack JavaScript solution that utilizes MongoDB, Express, AngularJS, and Node.js for building web applications. It highlights the features, advantages, and disadvantages of each component in the MEAN stack, focusing on their performance, scalability, and ease of development. The conclusion states that MEAN is a suitable framework for creating modern, responsive web applications.

1. Problems with LAMP?
• Apache is not the fastest web server around
• It’s hard to write good-to-read, reusable and fast PHP
code
• Frontend works with other languages than the
backend
• Too many conversions (XML to PHP to HTML, model
to SQL)
• There is no separated server-side and client-side
development

2. What is MEAN Stack?
MEAN Stack is a full-stack JavaScript solution that
helps you build fast, robust and maintainable
production web applications using MongoDB, Express,
AngularJS, and Node.js.

3. • 100% free , 100% Open Source
• 100% Java Script (+JSON and HTML)
• 100% Web Standards
• Consistent Models from the backend to the frontend and back
• Use a uniform language throughout your stack
o JavaScript (the language of the web)
o JSON (the data format of the web)
o No conversion needed for the database
• Use JavaScript with a great framework (compared to jQuery)
• Allows to start with the complete frontend development first
• Very low memory footprint/overhead

4. Processing model

5. MongoDB
MongoDB is a cross-platform document-oriented
database - classified as a NoSQL database which
eschews the traditional table-based relational database
structure in favour of JSON-like documents with
dynamic schemas.

6. What is MongoDB
• Developed by software company 10gen (now
MongoDB Inc.)
• Fast NoSQL schemaless database written in
C++
• Document-Oriented Storage
o JSON-style documents with dynamic schemas
• Full Index Support
o Index on any attribute
o Replication & High Availability
• Auto-Sharding
o Scale horizontally without compromising
functionality

7. MongoDB RDBMS
Collection Table
Document Row
Index Index
Embedded Document Join
Reference Foreign Key

8. Example
>db.mycol.insert({ _id:
ObjectId(7df78ad8902c),
title: 'MongoDB Overview',
description: 'MongoDB is
no sql database', by:
'tutorials point', url:
'http://www.tutorialspoint.
com', tags: ['mongodb',
'database', 'NoSQL'], likes:
100 })

9. MongoDB - Document

10. MongoDB - Collection

11. MongoDB – Query a
database

12. Advantages And
Disadvantages
Advantages
• Lightening fast.
• Auto sharding.
• Replication is very easy.
• You can perform rich queries, can create on the fly
indexes with a single command.
Disadvantages
• Very unreliable
• Indexes take up a lot of RAM.
o B-tree indexes

13. Express JS
Express is a minimal and flexible node.js web
application framework, providing a robust set of
features for building single and multi-page, and hybrid
web applications.

14. What is Express ?
• Node JS based web framework
• Based on connect middleware
• Makes usage of Node JS even easier
• Easy to implement REST API
• Easy to implement session management
• Supports several template rendering engines (Jade, EJS)
o Supports partials -> so you can split your HTML in
fragments
• Asynchronous
• Implements MVC pattern

15. Express – What is it?
• Allows to set up middlewares to respond to HTTP
Requests.
• Defines a routing table which is used to perform
different action based on HTTP Method and URL.
• Allows to dynamically render HTML Pages based on
passing arguments to templates.

16. Example
var express = require('express');
var app = express();
app.get('/', function (req, res)
{
res.send('Hello World!'); });
app.listen(3000, function ()
{
console.log('Example app
listening on port 3000!');
});

17. Advantages And
Disadvantages
Advantages
• Regardless of complexity, there should be very few
roadblocks if you know JavaScript well.
• Supports concurrency well.
• Fast and the performance is comparable with Golang
micro frameworks and Elixir's Phoenix.
Disadvantages
• There is no built in error handling methods.

18. What is Angular?
AngularJS is an open-source JavaScript
framework, maintained by Google, that assists with
running single-page applications.
• Its goal is to augment browser-based applications
with model–view–controller (MVC) capability, in
an effort to make both development and testing
easier.

19. AngularJS
• JavaScript framework developed by Google
• Based on Model-View-* Pattern (client-side)
o MVC/MVVM
o Bi-Directional Data Binding
• Declarative Programming (focus on what – not the how!)
o Directives are integrated in HTML directly
o DOM Manipulations completely hidden
• Great for Frontend development
o Great for SPA (Single Page Applications)
o Great for mobile apps
• Very modular and extensible
o Makes testing an ease
• Great Browser support (> IE8)
• Well documented

20. Two Way Data-binding

21. AngularJs directives
• ng-app
o Declares an element as a root element of the application
allowing behaviour to be modified through custom
HTML tags.
• ng-bind
o Automatically changes the text of a HTML element to the
value of a given expression.
• ng-model
o Similar to ng-bind, but allows two-way data binding between
the view and the scope.
• ng-controller
o Specifies a JavaScript controller class that evaluates HTML
expressions.

22. AngularJs directives
• ng-repeat
o Instantiate an element once per item from a collection.
• ng-show & ng-hide
o Conditionally show or hide an element, depending on the
value of a boolean expression.
• ng-switch
o Conditionally instantiate one template from a set of choices,
depending on the value of a selection expression.
• ng-view
o The base directive responsible for handling routes that
resolve JSON before rendering templates driven by
specified controllers.

23. Advantages and
Disadvantages
Advantages
• Fast development
• Makes developing SPA easy
• Awesome performance
•Make apps
scalable
Disadvantages
• Good for IO driven
apps only (not
games)

24. Node JS
Node.js is a platform built on Chrome's JavaScript
runtime for easily building fast, scalable network
applications.
• Node.js uses an event-driven, non-blocking I/O
model that makes it lightweight and
efficient,
perfect for data-intensive real-time applications that
run across distributed devices.

25. What is Node JS ?
• Written in C/C++
o Can also use C libraries
• Built on top of Chrome’s V8 engine – so pure
JavaScript!
o Therefore based on latest ECMAScript 5
• Framework to build asynchronous I/O
applications
• Single Threaded – no concurrency bugs – no
deadlocks!
o Not internally though – but we’ll get to that
• One node process = one CPU Core

26. What is Node JS continue
• Can easily handle 10k concurrent connections
o Doesn’t have any problems with concurrency
o Doesn’t create much overhead (CPU/Memory)
• Easily scalable (just create a cluster)
• Very fast (well, it’s mostly C code)
• Installation and first server start within less than 5
minutes
o REST-API that replies to GET requests can be
implemented in less than 5 minutes as
well!
• It’s not a web framework!

27. Blocking I/O vs.
Non-Blocking I/O

28. Example
var http = require('http');
http.createServer(function (req, res)
{
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('HelloWorldn');
}).listen(80);
console.log('Server listening on port 80');

29. Advantage and
Disadvantage
Advantages
• Node.js is fast
• The ever-growing NPM
• Real-time web apps
• Productivity
Disadvantages
• JavaScript's semantics and culture

30. Disadvantages of
mean Stack
• There are still no general JS coding guidelines
• MongoDB is not as robust as an SQL server
o This security is what they sacrifice to gain speed
• Once you’ve created the first site with this
technology, it’s hard to go back to the old approach

31. Conclusion
In the end, Mean is a full stack, Javascript, web
application framework. If you require a fast, easy,
simple way to create a modern, responsive, dynamic
web site then MEAN would be a great solution.

32. References
• http://www.mean.io
• https://angularjs.org
• http://mongodb.org
• https://nodejs.org
• http://expressjs.com
• http://slideshare.net

33. Any Questions ? ?

34. THANK YOU