[hintymad]

Thanks for the insight.

> also started to expose internal DNS-based service discovery. Then this is similar to Consul-based service discovery. In that case, do you know how Netflix continued to support their client-defined routing rules, like selecting a specific set of nodes of a given service to route traffic to? I'd imagine that the number of IP addresses in an ARecord is limited too, so a service won't retrieve the entire list of IPs from a DNS record?

[jrockway]

> I'd imagine that the number of IP addresses in an ARecord is limited too, so a service won't retrieve the entire list of IPs from a DNS record?

This is common even in xDS implementations; client services don't need to know every possible endpoint.