api

Learn how to design and build ingestion APIs for IoT systems — handling high-throughput device data, batching, validation, backpressure, and storage strategies with practical examples.

Set up an Express + TypeScript project from scratch and build your first URL shortening API endpoint. Covers project scaffolding, folder structure, URL validation, Base62 short codes, redirect handling, and error middleware.

Build production-ready REST APIs with Yii2 — ActiveController for instant CRUD, custom controllers, field serialization, pagination, Bearer token auth, rate limiting, API versioning, and CORS configuration.

Understand Cross-Origin Resource Sharing (CORS) from the ground up. Learn how browsers enforce the same-origin policy, how preflight requests work, and how to configure CORS correctly in Node.js, Express, FastAPI, Spring Boot, and Go.

Build type-safe GraphQL APIs in Spring Boot using Spring for GraphQL. Learn schema definition, queries, mutations, subscriptions, DataLoader for N+1 prevention, authentication, testing, and production best practices with complete Java examples.

Master production-ready Node.js API development with TypeScript. Learn Express.js and Fastify setup, middleware patterns, request validation with Zod, error handling, authentication, file uploads, background jobs, and logging.

Master GraphQL fundamentals: schemas, queries, mutations, subscriptions, resolvers, and best practices. Learn how GraphQL compares to REST and when to use each approach.

Master API documentation in Spring Boot using SpringDoc OpenAPI. Learn to auto-generate interactive Swagger UI, document endpoints with annotations, secure your API docs, and create production-ready documentation.

Master REST API fundamentals: HTTP methods, status codes, URL design, authentication, versioning, pagination, and best practices. The complete guide for backend developers.

Master the HTTP protocol from basics to advanced concepts. Learn HTTP methods, status codes, headers, cookies, HTTPS, HTTP/2, HTTP/3, caching, CORS, and debugging with practical examples.