Admin Page Caching issue

plugin itself doesn’t do this

please check what is the http response header from any admin page

I’ve no idea what i’m supposed to look for.
Basically everything is loaded from local cache, including the main .php file from each page.

General
Request URL:
https://redacted.website/wp-admin/plugins.php
Request Method:
GET
Status Code:
200 OK (from disk cache)
Remote Address:
[redacted:redacted:redacted:redacted:redacted:redacted]:443
Referrer Policy:
no-referrer-when-downgrade

 Response Headers
Alt-Svc:
h3=":443"; ma=86400
Cache-Control:
max-age=31536000
Cf-Cache-Status:
DYNAMIC
Cf-Ray:
redacted-MXP
Content-Encoding:
br
Content-Security-Policy:
upgrade-insecure-requests
Content-Type:
text/html; charset=UTF-8
Date:
Thu, 07 Dec 2023 16:43:24 GMT
Expires:
Wed, 11 Jan 1984 05:00:00 GMT
Permissions-Policy:
camera=(), microphone=(), geolocation=(self), fullscreen=(self)
Platform:
hostinger
Referrer-Policy:
no-referrer-when-downgrade
Server:
cloudflare
Vary:
Accept-Encoding
X-Content-Type-Options:
nosniff
X-Frame-Options:
SAMEORIGIN
X-Litespeed-Cache-Control:
no-cache
X-Turbo-Charged-By:
LiteSpeed
X-Xss-Protection:
0

Cache-Control:
max-age=31536000

this one is culprit

wordpress page should gives cache-control: no-cache, must-revalidate, max-age=0 , no-store header to disable browser cache

most likely from your CF cache setting , set it to respect origin header or something

That is already the case. On CF the Browser Cache TTL is set to “Respect Existing Headers”

So i guess this one here is the culprit then
It’s set in the mod_headers.c :
Header always set Cache-Control: max-age=31536000

I assume that overwrites the mod_expires.c definitions created by LightSpeed Cache?!

By the way, thank you very much for your support despite already having pointed out that it’s not casued by LightSpeed Cache, really appreciate it!

yes , for browser , cache-control will take precedence over expire if both exists and LSCWP doesn’t set expire over HTML page though.

but you can use

	SetEnvIf Request_URI "/$" change_header
	Header set Cache-Control "no-cache, no-store, must-revalidate, max-age=0" env=change_header

to put no-cache over any URI that ends with / which by default , all wp page does that way.

Yes it was indeed the culprit.
Thank you so much!

@qtwrk
Is there any specific reason why LiteSpeed Cache sets the mod_expires by default to A31557600 instead of A31536000 ?
1 year equals 60s * 60m * 24h * 365d = 31536000

Also these are deprecated:
ExpiresByType application/javascript A31557600
ExpiresByType application/x-javascript A31557600

And if i recall that correctly then jpeg already includes jpg, so the mime-type jpg is redundant.

Not sure about x-font-tff and x-font-woff, but i assume those could be deprecated as well.

Just letting you know. Maybe you have reasons to add these.