In cloud-native operations, few scenarios are as maddening as the “phantom slowdown.” This happens when Grafana or Kubernetes dashboards show a sea of green: pods are running, liveness and readiness probes return success codes, and node CPU utilization stays well below capacity limits. Yet users submit urgent tickets complaining of sporadic, severe latency when querying an application or waiting for an AI model’s response. Why do basic health checks pass inspection while application performance degrades? And how can engineering teams trace the root cause when the issue is intermittent and...

Source: The New Stack