API Design & OpenAPI

API Design & OpenAPI

Principles for designing APIs that last: REST constraints, versioning, auth patterns, rate limiting, OpenAPI 3.x specs, docs generation, code generation, and tools like Swagger UI and Redoc.

FundamentalsTopics 1–10

·What are APIs?
·REST Principles
·URL Design & Naming
·Request/Response Structure
·HTTP Methods
·HTTP Status Codes
·Headers & Content Negotiation
·Authentication Basics
·Versioning Strategies
·OpenAPI & Documentation

Start Fundamentals →

IntermediateTopics 1–10

·Pagination: Cursor vs Offset
·Filtering & Sorting
·Rate Limiting Strategies
·Idempotency Keys
·Bulk Operations
·File Upload Patterns
·Webhooks Design
·GraphQL Overview
·gRPC Overview
·API Testing & Automation

Start Intermediate →

AdvancedTopics 1–10

·OAuth 2.0 & OIDC Flows
·API Gateway Patterns
·Request/Response Validation
·Hypermedia & HATEOAS
·Event-Driven APIs (AsyncAPI)
·The BFF Pattern
·Long-Running Operations
·Streaming Responses
·Backward Compatibility
·Contract Testing (Pact)

Start Advanced →

ProductionTopics 1–10

·API Observability
·DDoS & Abuse Protection
·Secrets & Key Rotation
·Zero-Downtime Versioning
·Developer Experience (DX)
·Client SDK Generation
·Changelogs & Communication
·Multi-Region Routing
·API Monetisation
·Common Design Mistakes

Start Production →