https://thecodersblog.com/tag/resilience-engineering/Recent content in Resilience Engineering on The Coders BlogHugoen-usFri, 01 May 2026 21:23:47 +0000https://thecodersblog.com/artemis-ii-fault-tolerance-2026/Fri, 01 May 2026 21:23:47 +0000https://thecodersblog.com/artemis-ii-fault-tolerance-2026/<p>Your &lsquo;highly available&rsquo; system just crashed because a seemingly minor dependency failed, propagating bad state faster than you could say &lsquo;rollback&rsquo;. Welcome to the brutal reality of software reliability beyond marketing slides.</p> <h2 id="the-illusion-of-high-availability-a-dangerous-misconception">The Illusion of &lsquo;High Availability&rsquo;: A Dangerous Misconception</h2> <p>Most developers equate &ldquo;high availability&rdquo; (HA) with resilience. They run multiple instances, perhaps across availability zones, and feel confident. This confidence is often misplaced.</p> <p>High availability typically means your system can recover quickly from a failure, minimizing downtime. However, it implicitly accepts downtime as an inevitable part of the operational lifecycle. True <strong>fault tolerance (FT)</strong>, on the other hand, aims for <strong>continuous operation</strong> despite the occurrence of faults. It&rsquo;s the difference between quickly restarting after a crash and never crashing at all.</p>