Netlify's caching for dynamic data has been broken for a long time. For example, Functions cache on the path only, excluding any query strings. This was report

Netlify's caching for dynamic data has been broken for a long time. For example, Functions cache on the path only, excluding any query strings. This was reported in May 2020 [0], still unfixed. This means you cannot have any content that you want cached in a query string. It must go in the path. I just deployed a test site now[1]. Try modifying the query string params. No matter what you change, the first request/response is cached (for 10 seconds 'cache-control: public, max-age=10') [0]: https://answers.netlify.com/t/netlify-function-with-query-strings-ignores-custom-cache-control-header/15390 https://answers.netlify.com/t/netlify-function-with-query-st... [1]: https://zen-blackwell-f7a1bd.netlify.app/.netlify/functions/test?foo=bar https://zen-blackwell-f7a1bd.netlify.app/.netlify/functions/...