https://www.compilemymind.com/tags/reliability/ Recent content in Reliability on Compile My Mind Hugo en Thu, 22 Oct 2026 11:30:19 +0300 https://www.compilemymind.com/posts/high-availability-vs-disaster-recovery/ Thu, 22 Oct 2026 11:30:19 +0300 https://www.compilemymind.com/posts/high-availability-vs-disaster-recovery/ <p>The application has three servers, a load balancer, and a database replica. One server fails, traffic moves elsewhere, and nobody notices.</p> <p>Then an operator deletes the wrong production data. The database faithfully replicates the deletion to every live copy.</p> <p>The architecture was available. It was not recoverable.</p> <p>That is the tension between high availability and disaster recovery. <strong>High availability keeps a service usable through failures the running system is designed to absorb. Disaster recovery restores an acceptable service after a larger or different disruption crosses that design boundary.</strong></p>