HAProxy may be dynamically weighted via their Runtime API. That's how they load balance microservices dynamically... You can use whatever you want as criteria

HAProxy may be dynamically weighted via their Runtime API. That's how they load balance microservices dynamically... You can use whatever you want as criteria and then make the changes. https://www.haproxy.com/documentation/haproxy-runtime-api/reference/set-weight/ https://www.haproxy.com/documentation/haproxy-runtime-api/re... They did something similar at Reincubate to dynamically scale according to load.