Tag
slo
- Aug 26, 2026 Objective Windows: Rolling Windows, Calendar Months, and Time Equivalence How the choice of measurement window changes what a target means, why a 28-day window is the conventional default, and how to convert a time-based target into a count-based one. observability
- Jun 29, 2026 Multiwindow Burn-Rate Alerts and Why a Short Window Also Suppresses How pairing a long lookback with a short confirmation window yields both fast detection and durable alerts, and what the boolean pairing costs in edge cases. observability
- 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
- Jan 20, 2026 Error Budgets and the Burn Rate That Consumes Them How an error budget turns a service level objective into a spendable quantity, and how the burn rate compresses a window into a single number that can be compared against a threshold. observability
- Jul 17, 2025 Error Budget Units: Why Burn Rate Beats Remaining Budget How a budget derived from a target becomes a rate, why the rate is comparable across services with different targets, and where the arithmetic breaks at low volume. observability
- Jan 1, 2025 Symptom-Based Alerting and the Cause Signals It Replaces Why paging on the metric that explains a failure produces more pages than paging on the failure itself, and how to tell a symptom from a cause when writing a rule. observability
- Oct 5, 2024 Composite Objectives: Compressing Multi-Signal Health into a Single Score How normalization, weighting, and aggregation order determine what a composite objective means, and why the same weights can hide opposite failure patterns. observability
- Sep 2, 2024 Where Latency Is Measured, and Why Percentiles Do Not Average A serving latency number is a function of the point where the clock starts, and percentiles computed at different layers cannot be combined; both facts determine whether a monitoring figure means anything. inference systems