mod_proxy_balancer requires the service of mod_proxy, and it provides load balancing for all the supported protocols.

mod_proxy_balancer has following scheduling algorithm

• mod_lbmethod_byrequests
• mod_lbmethod_bytraffic
• mod_lbmethod_bybusyness
• mod_lbmethod_heartbeat

Followings are the example of a balancer configuratoin:

<Proxy "balancer://mycluster">
    BalancerMember "http://192.168.1.50:80"
    BalancerMember "http://192.168.1.51:80"
</Proxy>
ProxyPass        "/test" "balancer://mycluster"
ProxyPassReverse "/test" "balancer://mycluster"