🟣 REST APIs

Master RESTful web services design, implementation, and best practices

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REST APIs Curriculum

12
API Units
~50
REST Concepts
6+
HTTP Methods
JSON
Data Format
1

Introduction to REST APIs

Learn REST principles and understand why REST is the standard for web APIs.

  • What is REST?
  • REST principles
  • API vs web service
  • REST constraints
  • Stateless communication
  • Resource-based design
  • REST vs SOAP
  • API ecosystem
2

HTTP Methods & Status Codes

Master HTTP methods and status codes for proper REST API communication.

  • GET, POST, PUT, DELETE
  • PATCH and OPTIONS
  • Idempotency
  • Safe methods
  • HTTP status codes
  • 2xx, 3xx, 4xx, 5xx responses
  • Custom status codes
  • Error handling
3

Resource Design & URLs

Design clean, intuitive URLs and organize resources effectively.

  • Resource identification
  • URL structure
  • Naming conventions
  • Nested resources
  • Query parameters
  • Path parameters
  • Resource relationships
  • URL best practices
4

JSON & Data Formats

Work with JSON and other data formats for API communication.

  • JSON structure
  • Data serialization
  • Content-Type headers
  • Accept headers
  • XML alternatives
  • Data validation
  • Schema design
  • Nested objects
5

Request & Response Handling

Handle HTTP requests and craft appropriate responses.

  • Request parsing
  • Request validation
  • Response formatting
  • Headers management
  • CORS handling
  • Content negotiation
  • Compression
  • Response optimization
6

Authentication & Authorization

Secure APIs with proper authentication and authorization mechanisms.

  • API keys
  • Basic authentication
  • Bearer tokens
  • JWT tokens
  • OAuth 2.0
  • API security
  • Role-based access
  • Rate limiting
7

Error Handling & Validation

Implement robust error handling and input validation.

  • Error response format
  • Validation strategies
  • Input sanitization
  • Error codes
  • Error messages
  • Global error handlers
  • Validation libraries
  • Error logging
8

API Versioning

Manage API evolution with proper versioning strategies.

  • Versioning strategies
  • URL versioning
  • Header versioning
  • Query parameter versioning
  • Backward compatibility
  • Deprecation policies
  • Migration strategies
  • Version documentation
9

Pagination & Filtering

Handle large datasets with pagination, filtering, and sorting.

  • Pagination strategies
  • Offset-based pagination
  • Cursor-based pagination
  • Query filtering
  • Sorting parameters
  • Search functionality
  • Response metadata
  • Performance optimization
10

API Documentation

Create comprehensive API documentation using modern tools.

  • Documentation importance
  • OpenAPI/Swagger
  • API specifications
  • Interactive documentation
  • Code examples
  • Postman collections
  • Documentation tools
  • Maintenance strategies
11

Testing REST APIs

Implement comprehensive testing strategies for REST APIs.

  • Testing strategies
  • Unit testing
  • Integration testing
  • API testing tools
  • Postman testing
  • Automated testing
  • Mock servers
  • Performance testing
12

API Performance & Monitoring

Optimize API performance and implement monitoring solutions.

  • Performance optimization
  • Caching strategies
  • Response compression
  • API monitoring
  • Analytics and metrics
  • Rate limiting
  • Load balancing
  • Scaling strategies

Unit 1: Introduction to REST APIs

Learn REST principles and understand why REST is the standard for web APIs.

What is REST?

Understand REST as an architectural style for designing networked applications.

Architectural Style Stateless Resource-Based HTTP
REST (Representational State Transfer) is an architectural style for designing networked applications. It relies on a stateless, client-server communication protocol and treats server objects as resources that can be created, read, updated, or deleted.
REST Principles
Stateless
Client-Server
Cacheable
Uniform Interface
Layered System
// Basic REST API endpoint
GET /api/users/123
Host: api.example.com
Accept: application/json

Response:
{
  "id": 123,
  "name": "John Doe",
  "email": "