Does anyone have experience with hosing Discourse behind a Varnish instance? I use it for load balancing. Which cookies do I need to whitelist (ie. enable to affect the page) when using Varnish?

I have it working very well - as far as I can see Discourse behaves well towards Varnish and you can aggressively cache everything under the /assets directory. backend discourse { .host = "x.x.x.x"; .port = "81"; } sub vcl_recv { if (req.http.host == "forum.myhost.org.uk") { …

[imagem] richp10: cache everything under the /assets directory. I would strongly recommend going with a origin pull CDN for assets as opposed to caching locally, CDNs are so cheap anyway.

That makes a lot of sense, thanks :slight_smile:

Reviving this briefly. I’ve already got Varnish running on my web server, so including Discourse’s static assets in it has basically zero additional cost to me. On the other hand, I’m running Discourse behind Nginx with Passenger; Nginx is quite good at serving static assets—in fact, under low-to-m…

I’ve gone ahead and turned on Varnish caching for my assets directory, using a slightly modified version of @richp10 ’s config: # Cache only the static assets in Discourse's "assets" dir and pass everything else if (req.http.host ~"discourse.bigdinosaur.org") { …

Maybe you can do a little “how to” tutorial for this plz? Thanks!

I’ve changed my discourse varnish config since 2013. Looks like this now: sub vcl_recv { ... # Cache only the static assets and pass everything else if (req.http.host ~"discourse.bigdinosaur.org") { if (req.url ~ "^/uploads/" ) { return (l…

Upgraded Varnish to V4, bringing with it some subtle but important VCL syntax changes. My Discourse block now looks like this, but it’s working only inconsistently: # Cache only the static assets in Discourse's' "assets" dir and pass everything else if (req.http.host ~"discourse.bigdinosaur…

Quick update on this a year later: this is the Varnish 4.1/5 Discourse config I’ve been using that appears to work without any issues: if (req.http.host ~"discourse.bigdinosaur.org") { if (!(req.url ~ "(^/uploads/|^/assets/|^/user_avatar/)" )) { return (pass); } } Could probably also t…

Discourse behind Varnish?

Product Support Self-hosting

nineb 29 Setembro , 2025 12:05 15

Posso usar um segundo VPS para executar o Varnish? Como um CDN menos custoso para um pequeno discourse?

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Discourse behind Varnish?

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