litestar-debugging
Debugging
Execution Workflow
- Reproduce the issue with the smallest possible app, route, or test case.
- Identify the failing layer first: requests, routing, dependency injection, middleware, auth, responses, exception handling, or lifecycle.
- Turn on only the minimum safe diagnostics needed: local
debug=True, focused logs, or temporary assertions. - Inspect the boundary where the behavior diverges from expectation.
- Fix the root cause, remove temporary diagnostics, and add a regression test.
- Re-run the affected tests and re-check the surrounding contract for regressions.
Core Rules
- Keep
debug=Truelocal-only. - Prefer deterministic logs, assertions, and focused reproduction apps over ad hoc print debugging.
- Narrow the failing layer before changing code.
- Use request and app loggers for evidence, not speculation.
- Keep debug output free of secrets and sensitive payloads.
- Remove temporary diagnostics once the root cause is understood.
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Configure Litestar DTO behavior for inbound parsing and outbound serialization, including layer-scoped `dto`/`return_dto`, `DTOConfig` policies, `DTOData` update workflows, and custom `AbstractDTO` implementations. Use when API payload contracts differ from internal model structures. Do not use when internal models can be exposed safely without transformation.
18