global
        log 127.0.0.1 local0 #notice
        #log 127.0.0.1 local1 alert

        daemon
        nbproc 1
        maxconn 32000
        ulimit-n 65536
        # and uid, gid, daemon, maxconn...

defaults
        # setup logging
        log global
        option tcplog
        option httplog
                option dontlognull
                option allbackups

        # setup statistics pages
        stats   enable
        stats uri  /something_stats
        stats refresh 10
        stats auth    blahblah


        mode            http
        retries         20
        option          abortonclose
        option          redispatch


        timeout connect 120s  # time waiting for backend server to accept
        timeout client  80s  # data from client (browser)
        timeout server  120s  # data from server (mongrel)


frontend webservers *:80
        reqitarpit (something\/download)
        reqtarpit (121\.125\.69)
        mode http
        option httpclose
        acl dyn_update path_beg /something/update
        acl non_toxic url_sub version=1
        acl dyn_fast path_beg /something/end /something/heartbeat
        acl dyn_curl path_beg /something/something0 /something/start
        acl dyn_other path_beg /something/something2 /something something/something3 /something4/ /something5/
        acl dyn_other path /
        acl mobile hdr_beg(host) -i d.
#       acl priority_full dst_conn gt 10
#       use_backend everything if priority_full
        use_backend fast_mongrels if dyn_update non_toxic
        use_backend fast_mongrels if dyn_curl
        use_backend mongrels if dyn_fast
        use_backend mongrels if dyn_other !mobile
        use_backend mongrels if METH_POST
        default_backend nginx
        maxconn 1200

backend nginx
        mode http
        option httpchk HEAD /something.html
        balance roundrobin
        server localhost-http 127.0.0.1:8080 weight 100 check inter 10s fastinter 1s fall 3
        server webapp01-http xx.x.x.x:8080 weight 10 check inter 10s fastinter 3s fall 3 backup
        server webapp02-http xx.x.x.x:8080 weight 10 check inter 10s fastinter 3s fall 3 backup
        server webapp04-http xx.x.x.x:8080 weight 10 check inter 10s fastinter 3s fall 2 backup