I can't get cache-control: max-age to be anything other than zero for my static files

1

Using Django for my app and Whitenoise and have set up everything as per Render’s instructions. Site is working well but all of my static files have max-age=0 for the cache-control header. Not sure how to troubleshoot this further and am looking for suggestions.

Here is the output from curl for getting an image file:

HTTP/2 200
date: Sat, 21 Sep 2024 00:16:17 GMT
content-type: image/webp
content-length: 57144
cf-ray: 8c65dd9dcdbecf4e-CMH
cf-cache-status: DYNAMIC
access-control-allow-origin: *
cache-control: max-age=0, public
etag: “66ee02a8-df38”
last-modified: Fri, 20 Sep 2024 23:18:00 GMT
cross-origin-opener-policy: same-origin
referrer-policy: same-origin
rndr-id: f5719fc7-e841-4686
x-content-type-options: nosniff
x-render-origin-server: uvicorn
server: cloudflare

Assuming this has something to do with CF but even if so, how do I solve it? I have not yet pointed my real domain to my .onrender.com sub-domain, if that matters.

2

Hi,

This is a side-effect of Render Web Services being fronted by Cloudflare, which is configured not to cache.

Using a CDN for static assets is a feature request on our feedback site, but I don’t have an ETA: https://feedback.render.com/features/p/cdn-for-static-assets-in-backend-apps

A workaround could be to provision your own Cloudflare account with a custom domain to override caching options. This has come up in other topics in the community, e.g.:

3

Thanks, I am in the process of setting up CF. Having some caching issues there but started a new topic. They may not be Render related.

4

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.