Learning Objectives
5 objectives- Understand the fundamentals and architecture of Node.js and its ecosystem.
- Set up and configure a Node.js development environment effectively.
- Develop scalable and asynchronous server-side applications using Node.js and Express.
- Integrate databases and implement secure authentication in Node.js applications.
- Apply best practices for testing, debugging, error handling, and deployment of Node.js applications.
Content Outline
PreviewUnit 889: Comprehensive Node.js Development
1. Introduction to Node.js
- What is Node.js?
- Key features of Node.js
- Event-driven, non-blocking I/O model
- Single-threaded architecture
- Differences between Node.js and traditional server-side technologies (e.g., PHP, Java, .NET)
- Typical use cases and advantages
2. Setting up a Node.js Environment
- Installing Node.js and npm
- Verifying installations
- Overview of npm (Node Package Manager)
- Setting up a project folder and initializing a Node.js project (
npm init) - Choosing and configuring a code editor (e.g., VS Code)
- Introduction to debugging tools and environment variables
3. Node.js Modules and Packages
- Understanding CommonJS and ES Modules
- Creating custom modules
- Exporting and importing modules
- Using core Node.js modules (e.g., fs, path, http)
- Managing third-party packages via npm
- Semantic versioning and
package.jsondependencies - Updating and removing packages
4. Asynchronous Programming in Node.js
- Event loop and asynchronous architecture
- Callbacks: concept and callback hell problem
- Promises: creation, chaining, and error handling
- Async/Await syntax and best practices
- Handling asynchronous errors
- Using utilities like
util.promisify
5. Building RESTful APIs with Node.js
- Introduction to REST principles
- Overview of Express framework
- Setting up Express application
- Routing and route parameters
- Handling HTTP methods: GET, POST, PUT, DELETE
- Middleware in Express
- Parsing request bodies (JSON, URL-encoded)
- Sending appropriate HTTP status codes and responses
- Implementing CRUD operations
6. Working with Databases in Node.js
- Overview of popular databases: MongoDB, MySQL, PostgreSQL
- Connecting to databases using Node.js drivers
- Introduction to Object-Relational Mapping (ORM) and Object Document Mapping (ODM)
- Mongoose for MongoDB
- Sequelize for SQL databases
- Defining schemas and models
- Performing basic CRUD operations
- Handling database connection errors and pooling
7. Authentication and Authorization in Node.js
- Importance of authentication and authorization
- Overview of authentication strategies
- Implementing JWT (JSON Web Tokens)
- Using Passport.js strategies
- Password hashing and storage (bcrypt)
- Protecting routes and middleware for authorization
- Handling sessions and cookies
8. Error Handling and Debugging in Node.js
- Types of errors (synchronous vs asynchronous)
- Error handling patterns and middleware in Express
- Using try/catch with async/await
- Debugging techniques and tools (Node Inspector, VS Code debugger)
- Logging practices (console, Winston, Morgan)
- Monitoring and performance tools
9. Testing Node.js Applications
- Importance of testing
- Unit testing with Mocha and Chai
- Writing test cases for functions and modules
- Integration testing
- End-to-end testing with Supertest
- Test-driven development (TDD) basics
- Automating tests with npm scripts
10. Deploying Node.js Applications
- Preparing applications for production
- Environment configuration and managing secrets
- Using process managers (PM2)
- Deploying on cloud platforms (Heroku, AWS, DigitalOcean)
- Handling dependencies and build processes
- Load balancing and scaling Node.js applications
- Continuous Integration/Continuous Deployment (CI/CD) overview
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