Widespread performance degradation across 20+ application servers
Applications degraded and multiple managed servers entered warning state, putting shared-domain services at risk.
Thread dumps showed threads stuck in HTTP calls. Log correlation traced the dependency to an internal load balancer with abnormal CPU usage.
The immediate load balancer issue was addressed and workload isolation was introduced to reduce cross-application impact.
Service was restored and the environment became more resilient to recurrence of the same failure class.