As thousands of developers focus on constructing reliable, well-performing, and secure APIs, there's immense demand for a practical, up-to-date, technology-and-platform-independent guide to API design. API Design Patterns fills this gap. A team of expert authors cut through the complexity of API communication and message content, presenting rich and complete design guidelines and heuristics for engineering APIs sustainably and specifying them clearly. API Design Patterns covers the entire API lifecycle, from launching projects and establishing business goals through defining architecturally significant requirements, elaborating and implementing designs, and documentation. It illuminates patterns drawn from both public web APIs and proprietary application development and software integration projects the authors have led or participated in. You'll find a complete library of concrete, actionable design patterns, each formatted consistently to explain context, forces, problem, solution, d