API Design Mastery

Resource Modeling

Learn how to model API resources as nouns, not verbs, to build intuitive, scalable REST APIs that developers actually want to use.

Versioning Strategies

Compare URL versioning, header versioning, and content negotiation to choose the right API versioning strategy — and learn how to deprecate safely.

Error Design

Design machine-readable API errors using RFC 7807 Problem Details so clients can handle failures programmatically without parsing error strings.

Pagination and Filtering

Choose between cursor-based and offset pagination, design composable filter expressions, and implement stable sorting for large API collections.

Auth and Scopes

Secure your API with bearer tokens, design fine-grained OAuth scopes, and harden the perimeter with mTLS for machine-to-machine traffic.

Idempotency

Design idempotent APIs with idempotency keys to safely handle retries, network failures, and partial failure semantics without duplicating side effects.

Rate Limiting and Quotas

Implement per-key and per-tenant rate limiting, choose the right algorithm for fairness, and communicate limits to clients through standard headers.

Webhooks

Build reliable webhooks with HMAC signing, exponential-backoff retries, guaranteed ordering, and replay capability that your integrators can actually trust.

SDK Ergonomics

Build generated API clients that developers love — with sane retry logic, built-in observability, and a clear breaking-change strategy.

Deprecation as a Process

Retire API versions gracefully with Sunset headers, migration guides, dual-stack operation, and per-client usage tracking that prevents surprises on cutover day.