Hello!

On Wed, Jul 11, 2012 at 09:15:53AM -0400, WarrickF wrote:

> Hi Guys,
>
> I'd like to setup a reverse proxy that functions as follows.
>
> Servers responds telling the client to cache content for 1 hour, but a
> the same time tells Nginx to cache the content for 24 hours.
>
> Every hour client still re-request content but it's served from cache.
>
> If something changes on the origin servers I can still dump the cache on
> Nginx, which will get a fresh copy.
>
> Is something like this currently supported?

Yes.

1) Instruct nginx to ignore Cache-Control / Expires headers you
use to control expiration on client.

2) Either use explicit expiration set by proxy_cache_valid, or use
X-Accel-Expires header to control expiration from backend.

See here for more details:

http://nginx.org/r/proxy_ignore_headers
http://nginx.org/r/proxy_cache_valid

Maxim Dounin

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