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Over-fetching is a performance problem and a data leakage problem. Sparse fieldsets and response projection are the tools that solve it.
Read moreUnit tests give you confidence your classes work in isolation. Integration tests tell you whether your application actually works. Most Spring Boot projects have too few of the latter — and pay for it in production.
Read moreFunctional correctness is the floor, not the ceiling. The APIs developers choose to build on have properties that go beyond working — they are predictable, honest, and low-friction.
Read moreVague error messages are not just unhelpful — they are a tax on every developer who integrates your API. Here is how to stop writing them.
Read moreMost API error responses are structurally incomplete. Here is a concrete template for what to include, why each field earns its place, and what to leave out.
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