Graphql

This is for developers who need to build or work with GraphQL APIs and want to avoid the common production disasters. It covers schema design, resolver patterns, DataLoader for preventing N+1 queries, federation for microservices, and client integration with Apollo and urql. The sharp edges table is the real value here: it calls out critical issues like missing DataLoader causing database storms, unlimited query depth enabling DoS attacks, and the nullability propagation gotcha that can surprise you. The underlying philosophy is right: GraphQL is a contract, and your schema is your API documentation, so design it with intention. If you've ever watched a poorly designed GraphQL API melt under load, you'll recognize these lessons.