Hi Stephen,
When I open your website at https://www.auction-savvy.com/
I see these response headers:
cache-control: max-age=0
cf-cache-status: DYNAMIC
cf-ray: 592e056389d70d5a-VIE
cf-request-id: 02b0a1b23800000d5a24315200000001
content-encoding: br
content-type: text/html; charset=UTF-8
date: Wed, 13 May 2020 17:15:22 GMT
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
expires: Wed, 13 May 2020 17:15:21 GMT
last-modified: Wed, 13 May 2020 16:29:59 GMT
server: cloudflare
status: 200
vary: Accept-Encoding,Cookie,User-Agent,Accept
x-content-type-options: nosniff
then I open the same page like this: https://www.auction-savvy.com/?adasdas
and I get the following response headers:
cache-control: max-age=0
cf-cache-status: DYNAMIC
cf-ray: 592e07515b2f0d5a-VIE
cf-request-id: 02b0a2e6d900000d5a241da200000001
content-encoding: br
content-security-policy: frame-ancestors 'none'
content-type: text/html; charset=UTF-8
date: Wed, 13 May 2020 17:16:43 GMT
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
expires: Wed, 13 May 2020 17:16:40 GMT
link: <https://www.auction-savvy.com/wp-json/>; rel="https://api.w.org/"
referrer-policy: no-referrer
server: cloudflare
status: 200
strict-transport-security: max-age=63072000; includeSubDomains; preload
vary: Accept,Accept-Encoding,User-Agent
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
x-xss-protection: 1; mode=block
As you can see the late is a “fresh” request, with all your security headers.
So, I guess you are using some intermediate cache like Cloudflare.
To overcome this you can try to adjust the Cache-Control
header to include the public
directive.
For example:
Cache-Control: public, max-age=0
Note that you may need to purge the Cloudflare cache after a change of HTTP Headers plugin settings.
For more info read this:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control
Dimitar
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This reply was modified 4 years, 6 months ago by Dimitar Ivanov. Reason: clarification