ShaoZeMing opened a new issue #3541: URL: https://github.com/apache/apisix/issues/3541
### Issue description Add global plugins, such as cors, zipkin, and find that the response header appears twice. I want to know if the global plugin is called repeatedly internally, will this affect performance? ? I added cors and zipkin plugins globally, but I found that the response header appeared twice, so I want to ask. Thank you #### Example  ### Environment * apisix version : 2.2-master * OS (cmd: `uname -a`): linux centos * OpenResty / Nginx version (cmd: `nginx -V` or `openresty -V`): 1.19 * etcd version, if have (cmd: run `curl http://127.0.0.1:9090/v1/server_info` to get the info from server-info API): 3.4 * apisix-dashboard version, if have: 2.3-docker ---------------------------------------------------------------- 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: [email protected]
