How a REST API Works
Learn how REST APIs work from the ground up: HTTP fundamentals, resources, methods, status codes, and practical design patterns explained.
A comprehensive series of structured guides to master REST API design, implementation, and maintenance. Each guide builds upon the previous one, creating a coherent learning path.
{
"journey": "API Mastery",
"guides": 12,
"path": [
"fundamentals",
"design",
"security",
"patterns",
"operations"
],
"outcome": "production-ready"
}Follow this structured path to build solid API knowledge
Understand what REST APIs are, HTTP, methods, status codes, and fundamental architecture.
Design professional APIs with resources, endpoints, and document everything with OpenAPI.
Implement authentication, authorization, OAuth 2.0, and protect your API against threats.
Handle errors correctly, implement retries, and build resilient APIs.
Version your API, manage its lifecycle, and monitor with observability.
12 comprehensive guides ordered for progressive learning
Learn how REST APIs work from the ground up: HTTP fundamentals, resources, methods, status codes, and practical design patterns explained.
Master HTTP methods, status codes, and headers for REST APIs. Learn what breaks clients when HTTP semantics are misused and how to fix it.
Understand REST as an architectural style, not just HTTP with JSON. Resources, representations, statelessness, and why most APIs aren't …
Learn to design REST APIs from scratch: naming conventions, resource modeling, pagination, filtering, error handling, and versioning basics.
Understand OpenAPI as an API contract, not just documentation. Learn what it is, what problems it solves, and the difference between …
Master the difference between authentication and authorization. Learn API keys, Basic auth, Bearer tokens, token lifecycle, and scopes.
Understand OAuth 2.0 flows, roles, and PKCE. Learn the difference between OAuth and OpenID Connect, and when to use each.
Secure your APIs against real threats. Learn OWASP top 10, input validation, CORS, rate limiting, and essential security headers with …
Understand why APIs fail, timeouts, retries with exponential backoff, idempotency, and the circuit breaker pattern for resilient systems.
Master API versioning strategies, breaking changes, and lifecycle management. Learn deprecation policies, sunset procedures, and semantic …
Comprehensive guide to detecting and managing Shadow APIs. Learn governance frameworks, detection tools, and implementation roadmaps for …
Master API observability with logs, metrics, and traces. Learn to detect silent failures, set SLAs, and build resilient monitoring systems.
Start with the fundamentals and progress to building production-grade APIs.
Start with Guide 0