CDK

Every production system needs a cache, and most of us run Redis on ElastiCache. By switching the engine to Valkey — a one-line CDK change — we saved 20% on our caching bill. Here’s the full story with real numbers.

When building production-grade enterprise solutions on AWS, we try to follow all the best practices. But what happens when CDK itself creates unexpected issues? A deep dive into a real-world problem with CloudFront caching and CDK configuration.