Server setup resources: Linode Library & Slicehost.

@ Debian 6
_ http://library.linode.com/web-servers/nginx/installation/debian-6-squeeze

Cache Purge module
_ http://wiki.nginx.org/3rdPartyModules
_ http://wiki.nginx.org/NginxHttpProxyModule#proxy_cache_path
_ http://labs.frickle.com/nginx_ngx_cache_purge/

--with-debug
_ http://www.nginx-discovery.com/2011/04/day-46-how-to-debug-location-in-nginx.html
_ http://nginx.org/en/docs/debugging_log.html

./configure \
  --prefix=/opt/nginx \
  --user=www-data \
  --group=www-data \
  --with-http_ssl_module \
  --with-ipv6 \
  --with-debug \
  --with-http_flv_module \
  --add-module=../ngx_cache_purge-1.4

Configure Couch apps with caching
location @couch {
  proxy_pass http://127.0.0.1:5984;
  proxy_redirect off;
  proxy_cache couch;
  proxy_cache_valid  200 302  60m;
  proxy_cache_valid  404      1m;
  proxy_cache_use_stale updating;
  proxy_cache_key    $request_uri$is_args$args;
  #proxy_set_header Host $host;
  #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location ~ /purge(/.*) {
  proxy_cache_purge  couch  $1$is_args$args;
}
location ~ ^/foo {
  rewrite /foo/?(.*) /db/_design/ddoc/_rewrite/$1 break;
  try_files $uri @couch;
}
_ http://serverfault.com/questions/30705/how-to-set-up-nginx-as-a-caching-reverse-proxy

_ http://nginx.org/en/docs/http/request_processing.html
_ http://nginx.org/en/docs/http/server_names.html