If done right can really be awesome , set up stack using hasicorp's consul(consul.io) and theres the option to change the TTLs and cache limits.If using the DNS

If done right can really be awesome , set up stack using hasicorp's consul(consul.io) and theres the option to change the TTLs and cache limits.If using the DNS interface the updates are relatively painless and nodes are almost instantly available when provisioned.