saltyflorida wrote:
> I forgot to mention that I am using caching with the HTTP Proxy module and that I only want to cache responses from the production servers. When I have the cookie set to "testing" or "staging", I'd like to bypass the cache and talk directly to the backend. Does this sound feasible?
>
Sure. Do a rewrite using your $backend variable under the 'location /'
block to one of three other blocks, which have the different definitions
of your proxy_pass, proxy_cache_valid...

e.g.

map $cookie_[name] $backend {

default production;
test test;
...
}

location / {
rewrite ^(.*)$ /$backend/$1;
}

location /production/ {
proxy_pass http://backend_production;
proxy_cache_valid ...
}

location /test/ {
proxy_pass
# no proxy_cache_valid
...
}

Note, you'll need some way to catch the case of no cookie variable, so
it's unwise to put $cookie_[name] directly in the rewrite result (you'll
get an infinite loop on such results).

Marcus.

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