Between 3:30 PM and 9:30 PM PDT, some Amazon Relational Database Service (RDS) Aurora PostgreSQL instances in the US-EAST-2 Region experienced increased latency and fault rates. This issue also caused issues with Elasticache, ELB, and API Gateway APIs. Existing Elasticache, ELB, and API Gateway instances were not impacted by this event and were operating normally during this entire impact period. We have recovered the vast majority of affected instances and will contact any customers who are still impacted through the Personal Health Dashboard (PHD).