Post-Incident Review: EU-West Edge Ingestion Transit Degradation

Postmortem for Elevated Ingestion Latency on EU-West Monitoring Edge

Created by Incident Response Team•Aug 20, 2026•Published Aug 18, 2026•Resolved Aug 18, 2026

Executive Summary

Between 19:51 and 20:15 UTC, the EU-West ingestion cluster experienced transient latency spikes caused by fiber degradation on a primary European transit provider. Traffic was re-routed via secondary edge tunnels. All queued payloads were processed with zero data loss.

Root Cause Analysis & Contributing Factors

Identified Contributing Factors

No specific contributing factors tagged.

No 5-Whys root cause analysis recorded for this incident.

Root Cause Analysis Narrative

BGP route flap and localized packet loss on primary transatlantic transit link between London edge proxies and Frankfurt core ingress cluster.

Mitigation & Resolution Summary

Automated failover engaged backup transit routes via Amsterdam IX. Latency normalized to <15ms baseline.

Lessons Learned & Future Resiliency

Edge failover detection threshold reduced from 90s to 30s to accelerate future transit provider degradation responses.