Example nginx configuration

An example site configuration that passes all requests to the backend except images and requests starting with "/download/".
user www www;
worker_processes 2;
pid /var/run/nginx.pid;
# [ debug | info | notice | warn | error | crit ]
error_log /var/log/nginx.error_log info;
events {
 worker_connections 2000;
 # use [ kqueue | epoll | /dev/poll | select | poll ];
 use kqueue;
}
http {
 include conf/mime.types;
 default_type application/octet-stream;
 log_format main '$remote_addr - $remote_user [$time_local] '
 '"$request" $status $bytes_sent '
 '"$http_referer" "$http_user_agent" '
 '"$gzip_ratio"';
 log_format download '$remote_addr - $remote_user [$time_local] '
 '"$request" $status $bytes_sent '
 '"$http_referer" "$http_user_agent" '
 '"$http_range" "$sent_http_content_range"';
 client_header_timeout 3m;
 client_body_timeout 3m;
 send_timeout 3m;
 client_header_buffer_size 1k;
 large_client_header_buffers 4 4k;
 gzip on;
 gzip_min_length 1100;
 gzip_buffers 4 8k;
 gzip_types text/plain;
 output_buffers 1 32k;
 postpone_output 1460;
 sendfile on;
 tcp_nopush on;
 tcp_nodelay on;
 send_lowat 12000;
 keepalive_timeout 75 20;
 #lingering_time 30;
 #lingering_timeout 10;
 #reset_timedout_connection on;
 server {
 listen one.example.com;
 server_name one.example.com www.one.example.com;
 access_log /var/log/nginx.access_log main;
 location / {
 proxy_pass http://127.0.0.1/;
 proxy_redirect off;
 proxy_set_header Host $host;
 proxy_set_header X-Real-IP $remote_addr;
 #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 client_max_body_size 10m;
 client_body_buffer_size 128k;
 client_body_temp_path /var/nginx/client_body_temp;
 proxy_connect_timeout 70;
 proxy_send_timeout 90;
 proxy_read_timeout 90;
 proxy_send_lowat 12000;
 proxy_buffer_size 4k;
 proxy_buffers 4 32k;
 proxy_busy_buffers_size 64k;
 proxy_temp_file_write_size 64k;
 proxy_temp_path /var/nginx/proxy_temp;
 charset koi8-r;
 }
 error_page 404 /404.html;
 location = /404.html {
 root /spool/www;
 }
 location /old_stuff/ {
 rewrite ^/old_stuff/(.*)$ /new_stuff/1ドル permanent;
 }
 location /download/ {
 valid_referers none blocked server_names *.example.com;
 if ($invalid_referer) {
 #rewrite ^/ http://www.example.com/;
 return 403;
 }
 #rewrite_log on;
 # rewrite /download/*/mp3/*.any_ext to /download/*/mp3/*.mp3
 rewrite ^/(download/.*)/mp3/(.*)\..*$
 /1ドル/mp3/2ドル.mp3 break;
 root /spool/www;
 #autoindex on;
 access_log /var/log/nginx-download.access_log download;
 }
 location ~* \.(jpg|jpeg|gif)$ {
 root /spool/www;
 access_log off;
 expires 30d;
 }
 }
}