Caching by headers?

Hi, is it possible to cache pages based on the response headers or similar?

We have some "static" pages on our site that we'd like to cache in Cloudflare, but we don't know the URLs (as we support custom CNAMEs) so I'm struggling to find a way to "Cache everything" without using Page Rules?

I tried using a worker, but I couldn't seem to get that working either...

ryanbadgerOP•11/19/23, 9:14 AM

forgot to mention, we set some headers on these pages hoping we could either encourage CF to cache them, or we could use them in workers to cache the response:

// Set header to let Cloudflare know this request is static content and should be cached

$CI->output->set_header('X-Static-Site: 1');

// Set Cache-Control header
$CI->output->set_header('Cache-Control: public, max-age=60');

// Optionally set Expires header
$expiresDate = gmdate('D, d M Y H:i:s', time() + 60) . ' GMT';
$CI->output->set_header("Expires: $expiresDate");

// Ensure there's no conflicting Pragma header
$CI->output->set_header('Pragma: cache');

ryanbadgerOP•11/19/23, 10:10 AM

it's a static html page, do you mean I need to explicitly set the content type or something?

ryanbadgerOP•11/19/23, 10:13 AM

here's my response headers im getting:

Access-Control-Expose-Headers:
X-Country, X-Language
Alt-Svc:
h3=":443"; ma=86400
Cache-Control:
public, max-age=60
Cf-Cache-Status:
DYNAMIC
Cf-Ray:
8287ad8dee1e2df8-DPS
Content-Encoding:
br
Content-Type:
text/html; charset=UTF-8
Date:
Sun, 19 Nov 2023 10:12:59 GMT
Expires:
Sun, 19 Nov 2023 10:13:59 GMT
Nel:
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Pragma:
cache
Report-To:
{"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v3?s=XH%2FPJXa8RpPl5J19gE1EXyoybmxIyuHMZ228uI15PGN0hGhw1Wa1VbDzShravyn2X7gUsiLtda3HvxFF%2FHxRCcQlifiQtMxtqV09wN5kDazRHBQmXo7NHnqyrhQXgZO8SuWNTA%3D%3D"}],"group":"cf-nel","max_age":604800}
Server:
cloudflare
Set-Cookie:
ci_sessions=xxx; expires=Mon, 20-Nov-2023 10:12:59 GMT; Max-Age=86400; path=/; secure; HttpOnly
Strict-Transport-Security:
max-age=15552000; includeSubDomains; preload
Vary:
Accept-Encoding
X-Content-Type-Options:
nosniff
X-Country:
ID
X-Language:
en-GB
X-Static-Site:
1

Rryanbadger here's my response headers im getting: Access-Control-Expose-Headers: X-Countr...

Hello, I’m Allie!•11/19/23, 10:58 AM

Do you have a Cache Everything rule set?

ryanbadgerOP•11/19/23, 10:58 AM

in page rules? no

ryanbadgerOP•11/19/23, 10:58 AM

the URLs are dynamic so i cant use page rules (hence me trying to do it via headers or workers)

ryanbadgerOP•11/19/23, 11:33 AM

thanks but i dont think that will work for this page? https://demo.shoprocket.io/

Green Fingers Online Store

Browse & buy online from Green Fingers

ryanbadgerOP•11/19/23, 11:33 AM

we also support custom cnames, so it could also be something liek https://store.mahakatha.com/

Mahakatha Meditation Online Store

Official Store of Mahakatha Meditation Mantras and Ancient Chants from India, Shiva Mantras, Ganesha Mantras and more

ryanbadgerOP•11/19/23, 11:34 AM

i've been trying with workers all day and i THINK I have a solution

ryanbadgerOP•11/19/23, 11:34 AM

its not perfect

ryanbadgerOP•11/19/23, 11:37 AM

that's what i thought, but i cant figure out how

ryanbadgerOP•11/19/23, 11:37 AM

in that link you sent, you say:
"You can add a cache rule to force CF to cache stuff, it still wont cache dynamic content but will attempt to cache everything in caching/cache-rules/new"

ryanbadgerOP•11/19/23, 11:38 AM

pretty sure i tried that

ryanbadgerOP•11/19/23, 11:38 AM

but let me try again

ryanbadgerOP•11/19/23, 11:39 AM

would you mind checking my headers here: https://demo.shoprocket.io/
are they correct?

Green Fingers Online Store

Browse & buy online from Green Fingers

ryanbadgerOP•11/19/23, 11:41 AM

like this?

ryanbadgerOP•11/19/23, 11:42 AM

i used a != to apply to all requests

ryanbadgerOP•11/19/23, 11:42 AM

because i wont know the hostnames (we support custom cnames)

ryanbadgerOP•11/19/23, 11:43 AM

is it wrong?

ryanbadgerOP•11/19/23, 11:44 AM

hows this?

ryanbadgerOP•11/19/23, 11:45 AM

whoops sorry, 1 moment

ryanbadgerOP•11/19/23, 11:45 AM

ryanbadgerOP•11/19/23, 11:46 AM

like this?

ryanbadgerOP•11/19/23, 11:46 AM

no effect

ryanbadgerOP•11/19/23, 11:46 AM

ryanbadgerOP•11/19/23, 11:47 AM

ive been on/off trying to get this workign with CF for a couple of years now

ryanbadgerOP•11/19/23, 11:47 AM

it never does

ryanbadgerOP•11/19/23, 11:47 AM

every time i get close i find some small print somehwere that say it requires an enterprise plan

ryanbadgerOP•11/19/23, 11:47 AM

i cant do that

ryanbadgerOP•11/19/23, 11:48 AM

because then it will cache every response from our zone (if it caches at all)

ryanbadgerOP•11/19/23, 11:48 AM

we have APIs etc that must not be cached

ryanbadgerOP•11/19/23, 11:48 AM

i'll try...

ryanbadgerOP•11/19/23, 11:49 AM

ryanbadgerOP•11/19/23, 11:49 AM

how dot CF know whats dynamic?

ryanbadgerOP•11/19/23, 11:49 AM

back to this again

ryanbadgerOP•11/19/23, 11:49 AM

ryanbadgerOP•11/19/23, 11:50 AM

welp

ryanbadgerOP•11/19/23, 11:50 AM

it worked

ryanbadgerOP•11/19/23, 11:50 AM

and cahced our APIs

ryanbadgerOP•11/19/23, 11:50 AM

great

ryanbadgerOP•11/19/23, 11:51 AM

yes

ryanbadgerOP•11/19/23, 11:51 AM

json

ryanbadgerOP•11/19/23, 11:52 AM

e.g **

ryanbadgerOP•11/19/23, 11:52 AM

https://api.shoprocket.io/storefront/v1/stores/sr_live_pk_0ac696797e14d49ca01f523ffb8d962e670f/products?search=&sort=product_order&page=1&limit=12

ryanbadgerOP•11/19/23, 11:52 AM

i just disbaled it and had to "purge everything"

ryanbadgerOP•11/19/23, 11:54 AM

because i disabled it

ryanbadgerOP•11/19/23, 11:54 AM

but it was caching

ryanbadgerOP•11/19/23, 11:54 AM

yeh

ryanbadgerOP•11/19/23, 11:54 AM

and age

ryanbadgerOP•11/19/23, 11:55 AM

Caching by headers?

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