Duration

3 days

Overview

Technology will never stand still. After 20 years of stateless web technology, solutions like Gmail and Facebook has inspired real-time websites with push capability. These real-time web applications are employing push technology over web sockets. Web solutions are being pushed to handle huge number of simultaneous connections with high throughput, which equates to high scalability. These connections are from various types of devices like mobile phones, IOT devices as well as the normal PC browsers.

Node.js shines in real-time web applications employing push technology over web sockets. Finally the Node.js technology allows us to have web applications with real-time, two-way connections, where both the client and server can initiate communication, allowing them to exchange data freely. Node really shines in building fast, scalable network applications, as it’s capable of handling a huge number of simultaneous. Compared to traditional web-serving techniques where each connection (request) spawns a new thread, taking up system RAM and eventually maxing-out at the amount of RAM available, Node.js operates on a single-thread, using non-blocking I/O calls, allowing it to support tens of thousands of concurrent connections.

Understanding the fundamental concepts of Node.js is very important for a fulfilling career in this area, even for those who are not working directly in this industry. For example a basic grasp of the subject area will enable a project manager to appreciate the technical challenge faced in the project or help a mechanical engineer understand why the circuit designer insists on specific technical decision.

With this objective in mind, this course is designed to equip participants with both foundation knowledge and broad appreciation of each underlying application, and therefore increased interest and confidence for their future undertaking. The subject is delivered with minimal complex equations, stressing on practical applications instead.

After over 20 years of stateless-web based on the stateless request-response paradigm, we finally have web applications with real-time, two-way connections. This course also includes MongoDB and also how to use the MongoDB open-source NoSQL document database in Node.js environment. Attendees learn Mongo's most compelling use cases and master the fundamentals of Mongo’s features.

Prerequisites

Before attending this course, students should have general programming experience and knowledge of HTML and CSS. All students should be familiar with basic programming in almost any scripting or object-oriented language (command-line scripting, database programming, or application programming), and have some experience with any SQL or NoSQL database.

Course Topics

Day 1

Introduction to "Modern (ES5)" JavaScript
Basic language features
JavaScript types: Number, String, Boolean
Variable declaration using let
Operators – arithmetic, assignment, comparison
Decision Making – if, else, switch case, double equal ==, triple equal ===
Loops – for, while, do ... while
Arrays, iterating arrays using for … in
Functional Programming
Functions
Returning functions
Parameterized functions
Default function parameters
REST parameters
Anonymous functions and IIFE
Function constructor
Lambda functions
Lambda statement
Lambda expression
Function hoisting
Generated functions
Object Oriented Programming - OOP
Java Script Objects
Object creation – Literal method, Using Object, Function constructor
Properties, Methods
Comparing Objects
Object de-structuring
JavaScript call, apply and bind
Class
Creating Objects
Constructor
Inheritance
Method Overriding
Collections – Map, Set
Promise
Importing a module
Exporting a module
Error Handling
Syntax Errors
Runtime Errors
Logical Errors
Throwing Exceptions
Exception handling
Custom Errors
Node Projects
The JavaScript Repository
Node Package Manager (NPM)
Creating a JavaScript project
The package.json configuration file
Installing Packages Global
Installing Packages Locally
Adding dependency in package.json
Scripting through package.json
Webpack Project
HTTP
The HTTP protocol
Creating web server
Handling http requests
Sending requests
Building an HTTP server
Rendering a response
Processing query strings
Using Representational State Transfer
Node JS Console
Configuring TLS

Day 2

File System
Synchronous I/O vs. asynchronous I/O
Path and directory operations
__dirname and __filename
Synchronous file reads
Synchronous file writes
Asynchronous file reads using Promises
Asynchronous file writes using Promises
Buffers, Streams, and Events
Using buffers for binary data
Flowing vs. non-flowing streams
Streaming I/O from files and other sources
Processing streams asynchronously
Configuring event handlers
Modules and Unit Testing
Modularization
The CommonJS and RequireJS specifications
Defining modules with exports
Modules are singletons
Creating a package
Module scope and construction
Unit testing frameworks
What to test and how to test it
Building unit tests with Mocha
Events
When to use Event Emitters
Binding Functions to Events
Event Requests
Event Listening
What are callbacks
Callback-last
Callbacks: Error-first
Errors in Event Emitters
Uncaught Exceptions
Using Domains
Express
The model-view-controller pattern
Defining Jade and Handlebars templates
Building a front-end controller
Defining routes
Creating actions
Configuring Express to use Handlebars
Using REST
Reading POST data
Building Handlebars helpers
Adding middleware

Day 3

Data Sources
How Node.js connects to databases
Configuration and platform setup
RDBMS databases and NoSQL databases
Connecting to RDBMS and NoSQL databases
Performing CRUD operations
Building client requests to web services
MongoDB?
The current SQL/NoSQL landscape
Document-oriented vs. other types of storage
Mongo's featureset
Common use-cases
Introduction to JSON
Documents and Collections
Creating documents
Managing documents in collections
Iterating over documents
Simple Queries
Field equality tests
Operators available
Projections
Limiting results and paging
Data Modelling
Create Database
Drop Database
Create Collection
Drop Collection
Data Types
Insert Document
Query Document
Update Document
Delete Document

Day 4

Queries
Field equality tests
Operators available
Projections
Limiting Records
Paging
Sorting Records
Simple Updates and Deletes
Field updates
Field insertions
Field removal
Document deletion
Existential field values
More Complex Types of Queries
Existential field values
Aggregations and groups
Aggregations and groups in hierarchical data
Updates and Arrays
Altering array field elements
Insertion to array fields
Removing from array fields
Indexing
The primary index and the _id field
Problems requiring an index
Defining secondary indexes
Compound indexes
Indexing 2
Index selection
Index hints
Covering indexes
Index storage size
Indexes effect insertion and update speeds
Mongo Replication and Sharding
Configuring replication
Configuring sharding
Accessing clustered data from client APIs
Latency and consistency in replicated and sharded Mongo

Day 5

Creating a REST API with Node.js

Introduction

Setting up Node Project with MongoDB for API
Mongo RESTful API
CRUD operations through REST
Adding Data (POST requests in Node)
Retrieving Data (GET requests in Node)
Updating Data (PUT requests in Node)
Deleting Data (DELETE requests in Node)
Authentication and Security
Setting up our User Model for Authentication in Node
Authentication Middleware and Securing Resources in Node
MapReduce
Explanation of MapReduce
Types of logic that can be expressed as MapReduce declarations
Mapping documents
Reducing values
Mongo Security
Authorization and securing collections, documents
The limits of Mongo's authorization scheme
Authentication
Mongo in the enterprise
Socket Programming
Network Structure
Classifications and Topologies
Switching and Routing
Gateway, Repeater, Hub, Bridge
OSI & TCP/IP Protocol Layers
Physical & Logical Addresses
ARP & RARP Networking and TCP/IP Applications
Internet Protocol
Routing Protocol and IP Datagram
Error and Control Messages (ICMP) UDP
Transfer Control Protocol
TCP Networking Applications
(FTP, TFTP, TELNET, DNS, DHCP, SNTP, POP3, IMAP, SNMP)

Programme scope, delivery arrangements and suitability are confirmed during enquiry.

NodeJS with MongoDB