Reverse Proxy with caching

[Smrchy]

Hi,

i setup nginx and it's working great for us for static files. I'm wondering
if nginx would be suited for the following scenario:

We have an application server that has a lot of .php files and even more
static files (.gif, .jpg etc).

Can i put nginx in front of if like a proxy but have nginx cache the static
files (everything except the .php stuff). So that only .php requests reach
the server and the static files will be cached on the nginx machine once the
get retrieved from the upstream server.

Thx for your help

Patrick
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