Overview

Serverless APIs for Beginners with Fastify & AWS Lambda is a practical, project-based guide to building high-performance Node.js APIs using Fastify, AWS Lambda, and modern AWS serverless patterns. You'll go beyond ""hello world"" and learn how real backends stay stable under retries, bursts, and messy production input. Inside, you'll build three complete projects from scratch: a clean CRUD API with authentication, a webhook relay designed for real-world failure modes (signature verification, idempotency, SQS buffering, retries, and DLQs), and a tool-ready Support API built for automation and LLM tool calling-using strict schemas, deterministic JSON, and versioned contracts. Along the way, you'll apply practical production patterns like timeouts, caching, payload sizing, usage controls, and predictable error handling so your APIs remain fast, safe, and maintainable as they grow. If you want a hands-on path to shipping serverless APIs that behave predictably in production, this book gives you the patterns, code, and structure to build with confidence.

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