The Most Dangerous Reliability Failures Aren't Component Failures
DevOps.com, Wednesday, September 16th, 2026
System outages can occur when healthy components interact unsafely, not just from individual failures.
A provisioning service outage occurred when a policy library designed for serial use was reused for concurrent operations, causing memory exhaustion despite all components functioning as intended.
The problem emerged from interactions between healthy components rather than individual failures. The solution requires making resource constraints explicit and using signals like memory pressure and concurrency levels to control accepted workload.
Systems-safety approaches help identify how individually safe actions can combine into unsafe system states.