Nginx with balancing and PHP

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user       www www;
worker_processes  5;
error_log  logs/error.log;
pid        logs/nginx.pid;
worker_rlimit_nofile 8192;

events {
    worker_connections  4096;
}

http {
    include    conf/mime.types;
    include    /etc/nginx/proxy.conf;
    include    /etc/nginx/fastcgi.conf;

    default_type application/octet-stream;
    log_format   main '$remote_addr - $remote_user [$time_local] $status '
                      '"$request" $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
    access_log   logs/access.log  main;
    sendfile     on;
    tcp_nopush   on;
    server_names_hash_bucket_size 128; # this seems to be required for some vhosts

    server { # php/fastcgi
        listen       80;
        server_name  domain1.com www.domain1.com;
        access_log   logs/domain1.access.log  main;
        root         html;

        location / {
            index    index.html index.htm index.php;
        }

        location ~ \.php$ {
            fastcgi_pass   127.0.0.1:1025;
        }
    }

    server { # simple reverse-proxy
        listen       80;
        server_name  domain2.com www.domain2.com;
        access_log   logs/domain2.access.log  main;

        # serve static files
        location ~ ^/(images|javascript|js|css|flash|media|static)/  {
                root    /var/www/virtual/big.server.com/htdocs;
                expires 30d;
        }

        # pass requests for dynamic content to rails/turbogears/zope, et al
        location / {
            proxy_pass      http://127.0.0.1:8080;
        }
    }

    upstream big_server_com {
        server 127.0.0.3:8000 weight=5;
        server 127.0.0.3:8001 weight=5;
        server 192.168.0.1:8000;
        server 192.168.0.1:8001;
    }

    server { # simple load balancing
        listen          80;
        server_name     big.server.com;
        access_log      logs/big.server.access.log main;

        location / {
                proxy_pass      http://big_server_com;
        }
    }
}