DevOps & Infrastructure

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Insights on DevOps, infrastructure, and modern engineering

The Mathematics of Maglev: An Analysis of Consistent Hashing in eBPF Load Balancers

The Mathematics of Maglev: An Analysis of Consistent Hashing in eBPF Load Balancers

Load balancing at scale requires more than engineering intuition. When Google introduced Maglev, they presented an elegant solution to a fundamental distributed systems problem. Today, this algorithm powers critical infrastructure through implementations like Cilium's eBPF-based load balancer.

22 min read
Deriving the Magic Numbers: Why Multi-Window Burn Rate Alerts Use 14.4× and 6×

Deriving the Magic Numbers: Why Multi-Window Burn Rate Alerts Use 14.4× and 6×

If you've implemented SLO-based alerting, you've likely encountered these seemingly arbitrary numbers: burn rates of 14.4× and 6×, paired with windows of 1h/5m and 6h/30m respectively. The Google SRE Workbook presents these as proven values, but why these specific numbers? Where do they come from?

22 min read
Longhorn → Ceph Migration Post-mortem: When Storage Systems Collide

Longhorn → Ceph Migration Post-mortem: When Storage Systems Collide

"In production you don't rise to the level of your architecture... you fall to the level of your observability." My SigNoz dashboards went blood-red: Longhorn's instance-manager pods were thrashing in a tight restart loop, chewing through crash-backoff timers like popcorn. Within minutes I was

6 min read

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