AWS journey β€” API Gateway & Lambda & VPC performance

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We decided to hide some EC2 instances in private subnets (VPC). They’re accessible via bastion hosts or via API (API Gateway & Lambda). Works well, but there’s one weird issueβ€Šβ€”β€Šcold lambda start time is over 10s sometimes. We experienced even 15s. This is not acceptable and I’m seeking for answers to my questions. Does increased memory size help? Is this huge cold start time VPC related? Is there a difference when we do use another language? Read More...