Spring Full-Stack Practical Cases

Jun 29, 2026 · Backend Development

4 Advanced Techniques for Designing Spring Boot Controllers

This article examines four common shortcomings in typical Spring Boot controller APIs—lack of idempotency, misuse of PUT for partial updates, missing optimistic concurrency control, and always returning full objects—and demonstrates concrete solutions using Idempotency-Key headers, PATCH with JsonMergePatch, ETag handling, and sparse field selection.