AWS, DigitalOcean, deployment guides
24 articles
Redis evictions on ElastiCache don't throw errors — they just make your app slower and harder to debug. Here's how to detect what's being evicted, why it's happening, and how to stop it from quietly killing your cache hit rate.
A stalled CodeDeploy rollback is worse than a failed deployment — half your fleet runs old code, half runs broken new code, and alarms are firing. Here's how to diagnose and fix it fast.
If your SQS consumers are processing the same message twice, visibility timeouts are almost certainly the culprit. Here's how to diagnose the problem and fix it before it corrupts your data or floods your downstream services.
When dozens of containers spin up at once, each fetching secrets from AWS Secrets Manager, you hit rate limits fast. Here's exactly how to diagnose the problem and fix it before your next deployment meltdown.
Your EKS cluster has pending pods and the node group isn't scaling up — even though Cluster Autoscaler is running. Here's how to diagnose the exact failure point and get your workloads scheduled again.
awsvpc mode gives each ECS task its own elastic network interface, but that isolation also creates subtle packet-drop scenarios that can silently kill your service. Here's how to diagnose and fix them.
Your NAT Gateway bill doubled but your traffic looks the same. The culprit is almost never what you expect — data processing charges, cross-AZ traffic, and noisy internal services account for most surprise cost spikes. Here's how to find and fix each one.
ECS auto scaling looks great on paper but when a traffic burst hits, your tasks spin up too late and users already saw errors. Here's how to diagnose the lag and tune your scaling policy so it actually keeps up.
You triggered a CloudFront invalidation, waited for it to complete, refreshed the page — and the old file is still there. Here's why that happens and exactly how to fix it for good.
Your S3 bucket uploads succeed, your Lambda looks healthy, but nothing runs. No errors, no logs, just silence. Here's how to systematically diagnose and fix S3 event notification failures before they burn you in production.
API Gateway has a hard 29-second integration timeout that silently kills requests your Lambda or backend finishes just fine. Here's how to diagnose the mismatch and fix it before it ruins your users' experience.
IAM errors that slip past staging and only explode in production are a special kind of frustrating. This guide walks you through a systematic approach to diagnosing, reproducing, and fixing them before they take down your next deployment.