JanLi-air opened a new issue #3677: URL: https://github.com/apache/apisix/issues/3677
### Issue description If proxy-cache is configured in plugin list, it will override Cache-Control and Expires headers from the upstream. Problem is that even if proxy-cache is not configured in any route, those headers will still be overridden. So we have a side effect for proxy-cache. ### Environment * apisix version (cmd: `apisix version`): 2.0 * OS (cmd: `uname -a`): linux * OpenResty / Nginx version (cmd: `nginx -V` or `openresty -V`): openresty/1.19.3.1 * etcd version, if have (cmd: run `curl http://127.0.0.1:9090/v1/server_info` to get the info from server-info API): * apisix-dashboard version, if have: ### Minimal test code / Steps to reproduce the issue 1. Use the default configuration from apisix 2. Write Cache-Control and Expires headers in upstream 3. Check the response ### What's the actual result? (including assertion message & call stack if applicable) Cache-Control and Expires headers disappeared ### What's the expected result? If proxy-cache is not configured for a route, apisix should not rewrite Cache-Control and Expires headers. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
