Need to connect an EC2 instance in us-west-2 to an ElastiCache Redis/Valkey cluster in ap-southeast-2? This guide walks through the only safe way to do it—private networking—covering inter-region VPC peering (or Transit Gateway), routing, security group rules for port 6379, DNS resolution, and a quick checklist for troubleshooting timeouts.
AWS Predictive Scaling for EC2 Auto Scaling Groups forecasts your future demand from historical CloudWatch metrics and scales out ahead of time—ideal for workloads with daily or weekly traffic patterns. This article explains how it works, what it does (and doesn’t) do, and how to use it effectively alongside dynamic scaling.
Confused by S3 links that work in one region and fail in another? This guide explains S3’s regional endpoints, the right URL patterns to use, common errors, and when to put CloudFront in front of your bucket.
A plain-English summary of the Oct 20 us-east-1 outage: a DynamoDB DNS automation bug cascaded into EC2 launches, NLB health checks, and higher-level services. What failed, how AWS fixed it, and practical resiliency takeaways for builders.
Chasing “five nines” sounds heroic, but every extra nine slashes downtime while exploding cost and complexity. This post translates nines into real minutes, shows why the next nine often isn’t worth it, and walks through setting solid SLOs with error budgets. We share a quick ROI model, vendor-SLA gotchas, and practical ways to raise reliability—graceful degradation, safer deploys, and drills—so you buy the reliability your users feel, not vanity nines.
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