01Essay
The Question That Became Clutta
A slide from 2019, a catalog that lied politely, and one engineering question that kept surviving every change of system.
A slide from 2019, a catalog that lied politely, and one engineering question that kept surviving every change of system.
A closed incident proves that a workflow ended. It does not prove that the customer recovered, the system stayed correct, or the same failure will not return under a new number.
A maintenance window is a confession: somewhere, an operation was never made bounded, observable, or abortable. What rebalancing 50,000 Kafka replicas taught me about removing the confession.
Availability, designed from a place where the power grid is part of your threat model. Reliability lessons the textbooks cannot teach.
Publishing in order as each is finished. Subscribe and they arrive the day they land.
Beyond the Three Pillars: Correlating Signals at Scale
Metrics, logs and traces can reconstruct what happened. There is an information bound on what they can ever tell you about what should have.
When Health Checks Lie: Anatomy of a Cascading Failure
A 200 proves a process is alive. It proves nothing about whether the work it is doing is correct, and that gap is where cascades are born.