5- AWS Serverless:: Caching and Event-Driven Design (opens in new tab)

When building high-scale, resilient systems on AWS, performance isn't just about writing fast code, it’s about avoiding unnecessary work. A Engineer’s philosophy often boils down to a simple truth: The fastest code is the code that never executes, and the fastest database query is the one you never have to make. Let’s unpack caching in AWS piece by piece with a few real-world examples. Layer 1: Edge Caching (AWS CloudFront) AWS CloudFront is a Content Delivery Network (CDN). Instead of forcin...