nginx.conf file optimized for nginx 1.7.4 with the pagespeed module installed

nginx.conf

worker_processes 5;
worker_rlimit_nofile 300000;
 
pid /var/run/nginx.pid;
 
events {
    worker_connections 10540;
    # multi_accept on;
}
 
http {
        proxy_cache_path /data/nginx/cachepath levels=1:2   keys_zone=STATIC:50m
                                                      inactive=12h max_size=5g;
 
    
        ## Proxy caching options
        #   proxy_buffering           on;
        proxy_cache_min_uses      1;
        proxy_ignore_client_abort off;
        proxy_intercept_errors    on;
        proxy_next_upstream       error timeout invalid_header;
        proxy_redirect            off;
        #   proxy_set_header          X-Forwarded-For $remote_addr;
        proxy_connect_timeout     60;
        proxy_send_timeout        60;
        proxy_read_timeout        60;
 
        include       mime.types;
        default_type  application/octet-stream;
 
        access_log off;
        #   error_log /dev/null crit;
        #error_log /etc/nginx/log/error.log;
 
        gzip on;
        gzip_disable "msie6";
        gzip_proxied any;
        gzip_types text/plain text/xml text/html text/css application/x-javascript text/javascript application/json application/xml+rss;
        gzip_vary on;

        ##
        # Virtual Host Configs
        ##
        # Size Limits
          client_body_buffer_size     128K;
          client_header_buffer_size   2M;
          client_max_body_size          2M;
          large_client_header_buffers 8 8k;
 
 
        ## Timeouts
          client_body_timeout   60;
          client_header_timeout 60;
          expires               24h;
          keepalive_timeout     60 60;
          send_timeout          60;
 
        ## General Options
          ignore_invalid_headers   on;
          keepalive_requests      100;
          limit_zone gulag $binary_remote_addr 5m;
          recursive_error_pages    on;
          sendfile                 on;
          server_name_in_redirect off;
          server_tokens           off;
 
        ## TCP options
          tcp_nodelay on;
          tcp_nopush  on;
          
        pagespeed StatisticsPath /ngx_pagespeed_statistics;
        pagespeed GlobalStatisticsPath /ngx_pagespeed_global_statistics;
        pagespeed MessagesPath /ngx_pagespeed_message;
        pagespeed ConsolePath /pagespeed_console;
        pagespeed AdminPath /pagespeed_admin;
        pagespeed GlobalAdminPath /pagespeed_global_admin;

        server {
            listen   80; ## listen for ipv4; this line is default and implied
            #listen  # [::]:80 default ipv6only=on; ## listen for ipv6
         
            root /usr/share/nginx/www;
            index index.html index.htm;
		
	    pagespeed on;

            # Needs to exist and be writable by nginx.  Use tmpfs for best performance.
            pagespeed FileCachePath /var/ngx_pagespeed_cache;

            location /ngx_pagespeed_statistics { allow 127.0.0.1; deny all; }
            location /ngx_pagespeed_global_statistics { allow 127.0.0.1; deny all; }
            location /ngx_pagespeed_message { allow 127.0.0.1; deny all; }
            location /pagespeed_console { allow 127.0.0.1; deny all; }
            location ~ ^/pagespeed_admin { allow 127.0.0.1; deny all; }
            location ~ ^/pagespeed_global_admin { allow 127.0.0.1; deny all; }

            # Ensure requests for pagespeed optimized resources go to the pagespeed handler
            # and no extraneous headers get set.
            location ~ "\.pagespeed\.([a-z]\.)?[a-z]{2}\.[^.]{10}\.[^.]+" {
              add_header "" "";
            }
            location ~ "^/pagespeed_static/" { }
            location ~ "^/ngx_pagespeed_beacon$" { } 

            # Make site accessible from http://localhost/
                server_name localhost;
         
                location / {
                        proxy_pass              http://origin.server.com;
                        proxy_set_header        Host $host;
                        proxy_cache             STATIC;
                        proxy_cache_valid       ANY 1m;
                        proxy_cache_valid       302 5m;
                        proxy_cache_valid       200 5d;
                	proxy_cache_valid   	404 1m;
                        proxy_cache_use_stale   error timeout invalid_header updating
                                                http_500 http_502 http_503 http_504;
         
                    expires 72h;
                }
        }
}