Spring I/O 2025 - 22-23 May, Barcelona An entertaining review of the most common mistakes in designing an API, from the most outrageous goofs to the most dangerous “innocent” shortcuts. You’ll see examples of: Breaking Changes, Domain Model Leak, Sensitive Data Exposure, Performance Issues, Endpoint Coupling, CRUD vs CQRS, PUT overload, Religious REST Fallacy, and Improper Error Handling. Collected with love from over 150 companies.