Worked on the vikejs/vike repository to enhance backend reliability by addressing HTTP caching behavior for server errors. Focused on backend and API development using TypeScript, the developer fixed a bug in the getCacheControl function to ensure that 5xx server error responses are not cached. By returning a safe default cache-control value when server errors occur, the update prevents clients from receiving stale or incorrect data after failures. This change improved the correctness and stability of gateway responses, aligning with best practices for HTTP caching semantics and reducing the risk of unintended behavior following server-side issues in production environments.