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Retry logic is commonly added to improve reliability. In real systems, it can amplify failures, increase load, and turn partial degradation into full outages.
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Logging is meant to make production systems easier to understand. At scale, it often does the opposite - obscuring causality, distorting timelines, and changing system behavior in subtle ways.- Published on
Feature flags reduce deployment risk, but over time they can quietly reshape system behavior in ways that make correctness harder to reason about.- Published on
Tests can pass with confidence while production fails in surprising ways. The gap is rarely missing tests - it’s the assumptions those tests quietly encode.- Published on
Some bugs only surface when systems experience real traffic. This article examines why production load changes behavior, even when code paths appear identical.