How to use with reverse_proxy? (caching is not working)

[fa1rid]

Hi, I'm trying to use Caddy to cache .m3u8 files when reverse proxying to an upstream server. I’m using the cache directive and set up my Caddyfile as follows:

{
    order cache before rewrite
    order cache before reverse_proxy
    cache {
        allowed_http_verbs GET POST
        ttl 60s
        timeout {
            backend 20s
            cache 100ms
        }
    }
}

:9991 {
    route /ch1/* {
        @m3u8_files {
            path_regexp m3u8 ^/.*\.m3u8(\?.*)?$
        }

        handle @m3u8_files {
            header +X-Custom-Header "Some Value"
        }

        cache @m3u8_files {
            ttl 60s
        }

        uri strip_prefix /ch1
        rewrite * /ChannelOne{uri}
        reverse_proxy https://upstream-host.me {
            header_up Host {http.reverse_proxy.upstream.hostport}
        }
    }
}

What’s working:

• The X-Custom-Header is successfully added to the .m3u8 responses.
• The reverse proxy is functioning and serving content.

What’s not working:

• The caching doesn't seem to take effect at all. I expected .m3u8 files to be cached for 60 seconds, but every request still hits the upstream server.

Any help or guidance would be appreciated. Thanks in advance!

[darkweak]

@fa1rid sorry for the delay, can you paste the curl command and the HTTP response headers? Maybe you're sending a Cache-Control: no-cache HTTP request header or you have a Cache-Control: no-store in the HTTP response headers.