How to use Expires OR Cache-Control in nginx?

Question

Nginx

Google's guidelines say that:

1. It is recommended to use either Expires or Cache-Control, but not both
2. Similar to Last-Modified and ETag

I set the line expires 7d for statics in the nginx config, both Expires and Cache-Control are added to the headers.
Can these headers be managed in a more flexible way?
nginx is running as the only webserver, Apache is disabled.

Answer 1

You can use the add_header directive: "add_header Cache-Control public,max-age=259200;". Excluding the expires directive accordingly