KITFORMA · EDITORIAL ANSWER
How do I reject an invalid timeout configuration before serving requests?
KitForma editorial guide. A value can bind successfully yet be operationally invalid, such as a negative connection timeout. Scattered string parsing delays failure until an unlucky request.
Step-by-step answer
A value can bind successfully yet be operationally invalid, such as a negative connection timeout. Scattered string parsing delays failure until an unlucky request.
Bind related options into typed ConfigurationProperties and apply explicit constraints with the required validation support. Represent units clearly, for example Duration, and decide whether zero means disabled or invalid. Register the properties through the supported scanning or enabling mechanism.
Start with valid, absent and negative values and assert the intended startup outcome. Validation only checks declared constraints; it does not prove remote reachability or that the timeout fits real latency. Avoid a permissive fallback that silently disables protection.
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