There's no way it's DNS...

There's no way it's DNS...

From Adventures in DevOps by Will Button, Warren Parad

March 20, 2026 · 52 min · Episode 266

About this episode

The episode explores the complexities of DNS with guest Simone Carletti, discussing its critical role during outages and the challenges of modern web frameworks.

Share Episode                     How much do you really know about the protocol that everything is built upon? This week, we go behind the scenes with Simone Carletti, a 13-year industry veteran and CTO at DNSimple , to explore the hidden complexities of DNS. We attempt to uncover why exactly DNS is often the last place developers check during an outage, drawing fascinating parallels between modern web framework abstractions and network-level opaqueness.           Simone shares why his team relies on bare-metal machines instead of cloud providers to run their Erlang-based authoritative name servers, highlighting the critical need to control BGP routing. We trade incredible war stories, from Facebook locking themselves out of their own data centers due to a BGP error, to a massive 2014 DDoS attack that left DNSimple unable to access their own log aggregation service. The conversation also tackles the reality of implementing new standards like SVCB and HTTPS records, and why widespread DNSSEC adoption might require an industry-wide mandate…

People in this episode

Hosts: Warren Parad, Will Button

Guest: Simone Carletti

Topics covered

  • DNS complexities
  • network routing
  • BGP errors
  • DDoS attacks
  • DNS standards
  • web frameworks

Keywords

  • DNS
  • BGP
  • DDoS
  • Erlang
  • DNSSEC
  • SVCB
  • HTTPS
  • networking
  • web development

Mentioned in this episode

Organizations: DNSimple, Facebook

Books & works: One Second After

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