Tag: sre

All the articles with the tag "sre".

• When Kubernetes Scales, But Your Network Design Does Not

  12 Mar, 2026

  Kubernetes can scale pods, but that does not mean your TCP connections, clients, queues and failover model are ready to scale with it.

• It Is Always DNS. This Time It Was Hiding in the Defaults.

  16 Sep, 2025

  CoreDNS CPU was pegged and name resolution failed at random across the cluster. Nothing in the app changed. The load came from a default nobody chose, quietly turning one lookup into five.

• From firewalls and VoIP to SRE

  15 Apr, 2025

  I didn't start in the cloud. Fifteen years from telecom and firewalls to SRE, and why the old layers still make me better at the new ones.