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Comment by blibble | Hacker News Reader

things like naming, load balancing and service discovery can be done by a well managed dynamic dns system

monitoring / "circuit breakers" would probably require a proxy I guess

Speaking as someone who has successfully implemented service discovery and load balancing using DNS and DNSSRV, let me emphatically state that these are not the right tools for the job. They are slow, client support is so variable it can only be called broken, and they're extremely difficult to rationalize and debug.

as a counter example I've implemented it myself for non-trivial systems using short TTL SRV records, and it's worked very well indeed

you can use existing tools to introspect state (e.g. dig), and with sufficient logging it's perfectly debuggable

The CNCF also has [coredns.io](https://coredns.io/), which I think fits the use-case you describe well. I actually really like the concept behind linkerd, it makes a lot of sense when used in conjunction with Kubernetes.

linkerd contains some advanced features, that are not easily solvable with DNS.

By sending specific headers (and having your application forward them) one can have per request routing[1] and/or tracing[2].

[1] https://blog.buoyant.io/2016/11/04/a-service-mesh-for-kubern...

[2] https://blog.buoyant.io/2017/03/14/a-service-mesh-for-kubern...

> well managed dynamic dns system

oxymoron?

Yeah, that's the problem typically. In most large corps the DNS is broken and difficult to change.

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