Success Stories
The Postmortem Library
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SEV-1
API Gateway 502 Errors
During peak traffic, the API Gateway exhausted ephemeral ports, resulting in 502 errors for 15% of inbound requests.
SEV-2
Primary Database CPU Spike
A new deployment introduced an unoptimized N+1 query in the billing service, causing DB CPU to hit 100%.
SEV-1
Payment Webhook Failures
Webhook signature verification failed due to rotated secrets not being propagated to the consumer service.
SEV-2
Redis Cache Eviction Loop
Cache stampede occurred after flushing Redis keys. Database overwhelmed by read spikes.
SEV-3
Kubernetes Node OOM Kill
Memory leak in the image processing worker caused repeated OOM kills on worker nodes.
SEV-2
DNS Propagation Delay
TTL values were too high during migration, leading to split-brain routing for users in EU-West.