API Development & Design

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API-First Design — Complete Guide

Learn how to prioritize API design before writing implementation code to ensure consistency, reusability, and alignment across teams and best practices.

API Contract-First — Complete Guide

Learn the contract-first approach where API specifications are written before any backend or frontend code to reduce integration issues and best practices.

Design-First vs Code-First — Complete Guide

Learn the differences between design-first and code-first API development methodologies and when each approach is right design design design design design.

OpenAPI Basics — Complete Guide

Learn the fundamental concepts of the OpenAPI Specification including its structure, versioning, and standardized documentation design design design design.

OpenAPI Paths — Complete Guide

Learn how to define API paths and operations in OpenAPI including path parameters, operation IDs, tags, and descriptions design design design design design.

OpenAPI Parameters — Complete Guide

Learn to specify query, header, path, and cookie parameters in OpenAPI with proper schemas, constraints, and examples design design design design design.

OpenAPI Request Body — Complete Guide

Learn how to describe request bodies in OpenAPI using media types, schema references, and content negotiation patterns design design design design design.

OpenAPI Responses — Complete Guide

Learn to define API responses in OpenAPI including status codes, headers, body schemas, and error representations design design design design design design.

OpenAPI Security — Complete Guide

Learn how to declare authentication and authorization in OpenAPI including API keys, OAuth2, JWT, and OpenID Connect design design design design design.

OpenAPI Composition — Complete Guide

Learn how to compose OpenAPI specs using dollar-ref to reuse schema components across endpoints and reduce duplication design design design design design.

OpenAPI Discriminator — Complete Guide

Learn how to use the discriminator property in OpenAPI for polymorphic schemas and model inheritance hierarchies design design design design design design.

REST API Design — Complete Guide

Master REST API design from resources naming to HATEOAS — a complete step-by-step guide covering HTTP methods, status codes, pagination, versioning, and security.

Building REST APIs with Node.js — Complete Guide

Build production-ready REST APIs with Node.js — Express routing, JWT auth, MongoDB/Prisma, file upload, rate limiting, Redis caching, testing, Docker deployment, and more.

OpenAPI OneOf — Complete Guide

Learn how to implement oneOf in OpenAPI to specify schemas matching exactly one of several alternative definitions design design design design design.

Building REST APIs with FastAPI — Complete Guide

Build high-performance REST APIs with FastAPI — Pydantic models, SQLAlchemy, async database, JWT/OAuth2 auth, WebSocket, background tasks, deployment, and OpenAPI docs.

OpenAPI AnyOf — Complete Guide

Learn how to use anyOf in OpenAPI to define schemas matching any combination of alternative sub-schema options design design design design design design.

Building Serverless APIs — Complete Guide

Build serverless APIs with AWS Lambda, API Gateway, DynamoDB, S3, and the Serverless Framework — covering cold starts, VPC, IAM security, monitoring, and best practices.

OpenAPI AllOf — Complete Guide

Learn how to apply allOf in OpenAPI to merge multiple schemas into complex types satisfying all constraints design design design design design design.

Hypermedia APIs & HATEOAS — Complete Guide

Master HATEOAS and hypermedia APIs — the Richardson Maturity Model, link formats (HAL/JSON API/Siren), dynamic discovery, media types, design patterns, and practical implementation.

OpenAPI Not Schema — Complete Guide

Learn how to use the not keyword in OpenAPI schemas to exclude structures from validation and data models design design design design design design design.

API Documentation — Complete Guide

Master API documentation with OpenAPI, Stoplight, Swagger UI, Redoc, and Postman. Learn to design, write, and publish interactive API reference pages that developers love.

OpenAPI Callbacks — Complete Guide

Learn how to define asynchronous callbacks in OpenAPI for webhook-style server-to-client interactions design design design design design design design.

OpenAPI External Docs — Complete Guide

Learn how to link external documentation in OpenAPI specs to provide context and references for consumers design design design design design design design.

OpenAPI Specification — Step-by-Step Guide

Learn OpenAPI specification (formerly Swagger) from scratch. Design, document, and generate REST API clients with YAML and JSON definitions for automated API workflows.

OpenAPI Servers — Complete Guide

Learn how to configure server objects in OpenAPI including base URLs, variables, and environment endpoints design design design design design design design.

OpenAPI Links — Complete Guide

Learn how to use OpenAPI links to describe operation relationships and enable hypermedia-driven interactions design design design design design design.

OpenAPI Webhooks — Complete Guide

Learn how to define webhook subscriptions in OpenAPI 3.1 for event-driven real-time API notifications design design design design design design design.

API Blueprint Basics — Complete Guide

Learn the fundamentals of API Blueprint for designing RESTful APIs with Markdown syntax and tooling design design design design design design design design.

API Security — Complete Protection Guide

Master API security from HTTPS to incident response — a complete step-by-step guide covering authentication, authorization, input validation, CORS, rate limiting, and penetration testing.

Authentication Patterns — Complete Implementation Guide

Master API authentication from sessions to OAuth 2.0 — a complete step-by-step guide covering JWT, refresh tokens, PKCE, SAML, MFA, passwordless auth, social login, and LDAP.

RAML Basics — Complete Guide

Learn the core concepts of RAML including resource types, traits, security schemes, and reusable libraries design design design design design design design.

API Gateway Concepts — Complete Architecture Guide

Master API gateway concepts from reverse proxying to service mesh — a complete step-by-step guide covering routing, load balancing, rate limiting, Kong, AWS, NGINX, and Envoy.

API Spec Comparison — Complete Guide

Learn how OpenAPI, RAML, API Blueprint, and GraphQL compare across features, tools, and use cases design design design design design design design design.

API Portal Generator — Complete Guide

Learn how to generate API portals from specs using Redoc, Swagger UI, and Stoplight for documentation design design design design design design design.

Rate Limiting and Throttling — Complete Implementation Guide

Master rate limiting from token bucket to distributed systems — a complete step-by-step guide covering algorithms, Redis implementation, headers, and retry strategies.

API Documentation Builder — Complete Guide

Learn how to build API documentation sites with interactive explorers, code samples, and versioned guides design design design design design design design.

API Monitoring and Analytics — Complete Observability Guide

Master API monitoring from metrics to distributed tracing — a complete step-by-step guide covering Prometheus, Grafana, OpenTelemetry, ELK, Datadog, New Relic, and alerting.

API Sandbox Environment — Complete Guide

Learn how to create sandbox environments for safe API testing with realistic mock data design design design design design design design design design.

GraphQL API Design — Complete Guide

Master GraphQL API design from schema fundamentals to federated architecture. Covers types, resolvers, queries, mutations, subscriptions, dataloader, pagination, and security best practices.

API Mock Server — Complete Guide

Learn how to set up mock servers simulating API responses from specs for frontend development design design design design design design design design.

gRPC Basics — Complete Guide

Learn gRPC from Protocol Buffers to production deployment. Covers proto3 syntax, service definitions, RPC types, interceptors, authentication, deadlines, metadata, load balancing, reflection, gateway, and performance tuning.

API Stub — Complete Guide

Learn how to create API stubs returning predefined responses for testing before service implementation design design design design design design design.

WebSocket APIs — Complete Guide

Build real-time WebSocket APIs covering handshake, frames, Node.js integration, rooms, broadcasting, middleware, reconnection, heartbeats, Django Channels, FastAPI, Spring, sticky sessions, load balancing, security, and deployment.

API Proxy Tools — Complete Guide

Learn how to use API proxy tools to inspect, modify, and replay HTTP traffic during development design design design design design design design design.

API Testing — Complete Guide

Comprehensive API testing guide covering unit, integration, and e2e tests with Postman, Newman, Supertest, pytest, REST Assured, contract testing, mock servers, load testing with k6, security testing, CI/CD integration, and monitoring.

API Gateway vs Service Mesh

Learn the differences between API gateways and service meshes for microservice communication design design design design design design design design design.

Postman Collections — Complete Guide

Master Postman collections for API development and testing. Covers setup, request building, variables, pre-request scripts, test scripts, chai assertions, workflows, data-driven testing, collection runner, and Newman CI integration.

Kong API Gateway — Complete Guide

Learn how to configure Kong for routing, rate limiting, authentication, and plugin-based traffic management design design design design design design.

Apigee Management — Complete Guide

Learn how to use Google Apigee for API management including analytics, portals, security, and monetization design design design design design design design.

AWS API Gateway Deep — Complete Guide

Learn advanced AWS API Gateway features including authorizers, validation, caching, and canary deployments design design design design design design design.

Azure API Management — Complete Guide

Learn how to use Azure API Management to publish, secure, transform, and monitor APIs design design design design design design design design design design.

Tyk Gateway — Complete Guide

Learn how to deploy Tyk Gateway with plugins, authentication, and analytics for API traffic management design design design design design design design.

Gravitee Gateway — Complete Guide

Learn how to set up Gravitee Gateway with policies, documentation, rate limiting, and multi-env deployments design design design design design design.

API Analytics Monitoring — Complete Guide

Learn how to implement API analytics and monitoring for latency, errors, usage, and system health design design design design design design design design.

API Usage Analytics — Complete Guide

Learn how to track API consumption metrics including endpoint popularity and traffic patterns design design design design design design design design.

API Monetization Strategy — Complete Guide

Learn how to design API monetization with freemium tiers, pay-per-call, and revenue sharing design design design design design design design design design.

Tiered API Pricing — Complete Guide

Learn how to structure tiered API pricing with rate limits, features, and support levels design design design design design design design design design.

Usage-Based Billing — Complete Guide

Learn how to implement usage-based billing with metering, invoicing, quota enforcement, and tracking design design design design design design design.

API Subscription Workflow — Complete Guide

Learn how to design API subscription workflows from signup to key generation and onboarding design design design design design design design design design.

API Key Management — Complete Guide

Learn how to manage API keys including generation, rotation, revocation, scoping, and auditing design design design design design design design design.

API OAuth Scopes — Complete Guide

Learn how to define OAuth 2.0 scopes for fine-grained access control across API resources design design design design design design design design design.

API OAuth Roles — Complete Guide

Learn how to implement role-based access with OAuth 2.0 using claims, hierarchies, and policies design design design design design design design design.

API SSO Integration — Complete Guide

Learn how to integrate SSO into APIs using SAML, OpenID Connect, and federated identity providers design design design design design design design design.

API Custom Domain — Complete Guide

Learn how to configure custom API domains with SSL, DNS, and reverse proxy setup design design design design design design design design design design.

API CORS Configuration — Complete Guide

Learn how to configure CORS headers for secure browser-based cross-origin API requests design design design design design design design design design.

API Caching Strategy — Complete Guide

Learn how to design API caching with ETags, Cache-Control, CDNs, and invalidation patterns design design design design design design design design design.

API Version Strategy — Complete Guide

Learn how to choose URI, header, or parameter versioning for evolving APIs gracefully design design design design design design design design design design.

API Lifecycle Management — Complete Guide

Learn how to manage the full API lifecycle from design through deployment and retirement design design design design design design design design design.

API Deprecation Policy — Complete Guide

Learn how to create API deprecation policies with timelines, migration guides, and notifications design design design design design design design design.

API Sunset Strategy — Complete Guide

Learn how to plan API sunset strategies with phased retirement and migration support design design design design design design design design design design.

API Standards Governance — Complete Guide

Learn how to establish API governance with naming rules, design reviews, and linting automation design design design design design design design design.

API Naming Conventions — Complete Guide

Learn API naming best practices for resources, endpoints, parameters, and terminology design design design design design design design design design design.