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Registered services and nodes can be queried using both a DNS interface as well as an HTTP interface.

This is very cool. Integrating with a name resolution protocol that every existing programmer and stack knows how to use (often without even thinking about it) should lead to some magical "just works" moments.

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See also SkyDNS, another service discovery system: http://blog.gopheracademy.com/skydns

In common with Consul:

* DNS interface

* Operates as a distributed cluster

* Uses Raft for consensus

SkyDNS is compared to Consul here: http://www.consul.io/intro/vs/skydns.html

IIRC, the Chubby paper mentions how Google put protocol conversion servers in front of Chubby to convert DNS queries into lookups into a Chubby cluster. Here, it's built right into the service itself.

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