Postmortem: The 2026 Slack Outage Due to Istio 1.22 Circuit Breaker Misconfiguration
Postmortem: The 2026 Slack Outage Due to Istio 1.22 Circuit Breaker Misconfiguration Executive Summary On March 12, 2026, Slack experienced a global outage lasting 2 hours and 27 minutes, rendering core messaging and collaboration features unavailable to 18.2 million active users. The i
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