Design and implement robust REST API request validation middleware with patterns, code examples, error models, testing, and production tips.
Learn how to model polymorphism in GraphQL with unions and interfaces, when to use each, querying patterns, resolvers, and best practices.
A practical guide to HTTP If-Modified-Since for REST APIs: how it works, 304 responses, server/client examples, pitfalls, and best practices.
A practical, secure guide to setting up a Model Context Protocol (MCP) server in TypeScript and Python, wiring clients, and hardening for production.
Design, implement, and test REST API content negotiation: headers, q-values, media types, versioning, caching, and error handling with practical examples.
A practical, production-grade guide to implementing GraphQL file uploads with Node.js, Apollo, streaming, S3, validation, and security.
