Tag
reliability
- Jun 17, 2026 Error Budgets as a Release Gate: The Arithmetic Behind the Freeze Converting a service level objective into a measured allowance of failure, normalising it with burn rate, alerting on two windows at once, and the places where the arithmetic stops matching user experience. software engineering
- Jun 10, 2026 Reliability Block Diagrams and Markov Availability Models Composing availability through series and parallel blocks, translating nines into downtime, and using a small state model where repair and degradation matter more than independence. software architecture
- Apr 8, 2026 Burn-In, Lifetime Models, and the Bathtub Curve Why a fraction of dies fail early and separately from wear-out, how Arrhenius voltage and temperature acceleration are used to compress a lifetime into a test, and what burn-in costs. hardware engineering
- Nov 13, 2024 The TCP/IP Split and the End-to-End Argument Why reliability moved out of the network and into the endpoints, what that costs in duplicated work, and how the argument constrains where a function may legally live. computing history
- Jun 13, 2024 Decomposing Recovery Time into Detection, Diagnosis, and Mitigation Why a single mean time to recovery mixes intervals with different floors and different distributions, how concurrent incidents queue behind one responder, and how to measure each phase without corrupting the comparison. software engineering
- May 9, 2024 Postmortem Causation: Triggers, Latent Conditions, and Failed Defences Why a single root cause discards the information needed to prevent recurrence, how counterfactual reasoning behaves in stochastic systems, and how to rebuild a sequence from telemetry with its uncertainty intact. software engineering