REST API Complete Masterclass (39 Chapters, 15 Phases)
📌 Covered in this course:
What is REST API? · HTTP Request & Response · HTTP Methods & Status Codes · Headers · Resources & URLs · API Versioning · JSON · Request & Response Schemas · CRUD APIs · Query Parameters · Filtering & Searching · Sorting · Pagination · Validation · Error Handling · Authentication & JWT · Authorization · CORS & Rate Limiting · API Security · OpenAPI & Swagger UI · Postman & curl · API Testing · Contract Testing · Load Testing · HTTP Caching · Reliability & Retries · Idempotency · WebSockets · SSE · Webhooks · API Gateway · Microservices APIs · GraphQL & gRPC · REST API Projects & Quiz
Welcome to Our Compiler's REST API Complete Master Course. REST (Representational State Transfer) is the architectural foundation of modern web and mobile applications. This comprehensive 39-chapter bootcamp guides you through HTTP fundamentals, status code semantics, clean URL design, security, JWT authentication, OpenAPI documentation, WebSockets, Webhooks, API Gateways, Microservices, and building real-world projects like Our Compiler REST API.
🎯 Ready to Master REST API Architecture?
Choose where to start: explore REST introduction, CRUD APIs, WebSockets, Webhooks, API Gateway, Microservices, or Our Compiler REST API Architecture:
📚 Master Course Curriculum
Phase 01
REST API Introduction
Phase 02
HTTP Fundamentals
02
2. HTTP Request & Response
HTTP ante enti? · Request line · Request method · Request URL · Request headers · Request body · Query parameters · Path parameters · Status line · Status code · Response headers · Response body · Content type
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03
3. HTTP Methods
GET · POST · PUT · PATCH · DELETE · HEAD · OPTIONS · Safe methods · Idempotent methods · Method selection · Method misuse · Method security
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04
4. HTTP Status Codes
1xx informational · 2xx success · 3xx redirection · 4xx client errors · 5xx server errors · 200 OK · 201 Created · 202 Accepted · 204 No Content · 400 Bad Request · 401 Unauthorized · 403 Forbidden · 404 Not Found · 409 Conflict · 422 Unprocessable Content · 429 Too Many Requests · 500 Internal Server Error · 503 Service Unavailable
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05
5. Headers
Content-Type · Accept · Authorization · Location · Cache-Control · ETag · CORS headers · Request ID header · Rate limit headers · Custom headers
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Phase 03
Resource & URL Design
06
6. Resources & URLs
Resource ante enti? · Resource naming · Nouns vs verbs · Singular resources · Collection resources · Nested resources · Resource identifiers · Slugs · Public IDs · Resource relationships · Avoiding action URLs · Consistent naming
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07
7. API Versioning
Why versioning is needed · URL versioning · Header versioning · Query versioning · v1 · v2 · Breaking changes · Non-breaking changes · Deprecation · Migration guides · Backward compatibility · Sunset headers
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Phase 04
JSON & Data Formats
08
8. JSON
JSON ante enti? · JSON object · JSON array · Strings · Numbers · Boolean · Null · Nested objects · Nested arrays · JSON encoding · JSON decoding · Invalid JSON · JSON size · JSON naming conventions
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09
9. Request & Response Schemas
Request schema · Response schema · DTO · Required fields · Optional fields · Nullable fields · Nested schema · Pagination schema · Error schema · Schema versioning · Sensitive field filtering · Consistent data shape
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Phase 05
CRUD API Operations
Phase 06
Querying, Filtering & Pagination
11
11. Query Parameters
Query parameter ante enti? · Filtering · Search · Sorting · Multiple filters · Date filters · Range filters · Boolean filters · Query validation · URL encoding · Default values · Invalid query response
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12
12. Filtering & Searching
Multi-field filters · Full-text search · Search text normalization · Search indexes · Search result ranking · Search pagination · Search security · Search performance
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13
13. Sorting
Sort by one field · Sort by multiple fields · Ascending order · Descending order (-field) · DB index optimization · Stable sorting
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14
14. Pagination
Why pagination is needed · Page-based pagination · Offset pagination · Limit · Page number · Cursor-based pagination · Next cursor · Previous cursor · Pagination metadata · Stable sorting · Large dataset performance
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Phase 07
Validation & Error Handling
15
15. Validation
Why validation is needed · Required fields · Data types · String length · Number limits · Email validation · Enum values · Nested validation · Cross-field validation · File validation · Validation error format
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16
16. Error Handling
Client errors · Server errors · Custom error codes · Global error handler · Exception mapping · Validation errors · Database errors · External API errors · Logging internal details · Safe public messages · Correlation IDs · Retryable errors
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Phase 08
Authentication & Authorization
17
17. Authentication
Authentication ante enti? · Authorization ante enti? · Login · Registration · Logout · Sessions · Cookies · API keys · Bearer tokens · JWT · OAuth2 · OpenID Connect · Password hashing · Multi-factor authentication
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18
18. JWT
JWT structure · Header · Payload · Signature · Access tokens · Refresh tokens · Token expiry · Token validation · Token revocation · Role claims · Permission claims · Secure token storage · JWT risks
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19
19. Authorization
Role-based access (RBAC) · Permission-based access · Admin endpoints · User-owned resources · Policy checks · Scope-based access · Multi-tenant access · Forbidden response (403) · Authorization middleware
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Phase 09
Security & Rate Limiting
20
20. CORS
Same-origin policy · CORS ante enti? · Simple request · Preflight request · OPTIONS · Allowed origins · Allowed methods · Allowed headers · Credentials · CORS errors · Development vs Production configuration
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21
21. Rate Limiting
Rate limiting ante enti? · Requests per minute · IP-based limits · User-based limits · Token-based limits · Login rate limits · API quotas · 429 Too Many Requests · Retry-After header · Redis rate limiting · Distributed rate limiting
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22
22. API Security
HTTPS · Input validation · SQL injection prevention · NoSQL injection · XSS · CSRF · Security headers · Rate limiting · Brute-force prevention · Request size limits · Secret management · Audit logging
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Phase 10
OpenAPI & Documentation
23
23. OpenAPI
OpenAPI ante enti? · API specification · API metadata · Servers · Paths · Operations · Parameters · Request bodies · Responses · Schemas · Components · Security schemes · Tags · Examples
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24
24. Swagger UI
Swagger UI ante enti? · Interactive documentation · Testing endpoints · Request examples · Response examples · Authentication in Swagger · Schema display · API grouping · Documentation deployment · Versioning
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25
25. Postman & curl
Postman · Insomnia · curl · HTTPie · Browser DevTools · Environment variables · Collections · Test scripts · Importing OpenAPI · Sharing API collections
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Phase 11
Testing & Performance
26
26. API Testing
Unit testing · Integration testing · End-to-end testing · Contract testing · Request tests · Response tests · Status code tests · Header tests · JSON schema tests · Authentication tests · Validation tests · Error tests
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27
27. Contract Testing
API contract ante enti? · Consumer expectations · Provider expectations · OpenAPI validation · Breaking change detection · Consumer-driven contracts · Contract test workflow · Version compatibility · CI integration
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28
28. Load Testing
Load testing ante enti? · Stress testing · Spike testing · Endurance testing · Concurrent requests · Response latency · Throughput · Error rate · k6 overview · Apache JMeter overview · Bottleneck analysis · Performance baseline
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Phase 12
Caching & Reliability
29
29. HTTP Caching
Cache ante enti? · Cache-Control · ETag · Last-Modified · Conditional requests · 304 Not Modified · Public cache · Private cache · No-cache · No-store · Cache invalidation · CDN overview
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30
30. Reliability & Retries
Timeouts · Retries · Exponential backoff · Jitter · Circuit breaker · Bulkheads · Fallbacks · Idempotency keys · Graceful degradation · Health checks (Readiness, Liveness)
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31
31. Idempotency
Idempotency ante enti? · Idempotent methods · Duplicate requests · Payment APIs · Idempotency key · Request storage · Retrying POST requests · Duplicate prevention · Conflict handling · Idempotency testing
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Phase 13
Real-Time APIs & Events
32
32. WebSockets
WebSocket ante enti? · REST vs WebSocket · Connection · Messages · Broadcasting · Rooms · Authentication · Reconnection · Error handling · Chat API
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33
33. Server-Sent Events
SSE ante enti? · One-way server updates · Event stream · Reconnection · Notifications · Progress updates · Browser EventSource · SSE vs WebSocket · Scaling SSE · SSE security
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34
34. Webhooks
Webhook ante enti? · Event notification · Webhook endpoint · Signature verification · Retry handling · Duplicate events · Event IDs · Webhook logs · Webhook testing · Payment webhook project
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Phase 14
Advanced API Architecture
35
35. API Gateway
API gateway ante enti? · Routing · Authentication · Rate limiting · Load balancing · Request transformation · Response aggregation · Gateway security · Gateway monitoring · Microservices gateway
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36
36. Microservices APIs
Monolith vs microservices · Service boundaries · Inter-service communication · REST between services · Service discovery · API gateway · Distributed tracing · Correlation IDs · Eventual consistency · Distributed transactions · Saga pattern · Service versioning
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37
37. GraphQL & gRPC Overview
GraphQL ante enti? · REST vs GraphQL · gRPC ante enti? · REST vs gRPC · Protocol Buffers · Streaming · Internal services · Public APIs · Choosing the right protocol · Hybrid architecture
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Phase 15
Projects & Certification
38
38. REST API Projects
Beginner Projects (Calculator, Todo, Notes, Contact API) · Intermediate Projects (Blog REST API, Auth API, E-commerce API) · Advanced Projects (Our Compiler REST API Architecture, Real-time Chat, Payment API) · Complete Our Compiler Endpoint Specification
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39
39. REST API Practice Quiz
Comprehensive REST API Knowledge Check · 30 Multiple Choice Certification Exam Questions · HTTP, Status Codes, Security & Design
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