Scale & Performance
Handling traffic peaks, web performance, Core Web Vitals and scaling under real-world load.
CrUX vs Core Web Vitals: Metrics, Data Sources and When to Use Which
Teams often talk about 'CrUX' and 'Core Web Vitals' as if they were the same thing. One is a set of metrics; the other is a dataset of real Chrome users. Knowing the difference, and where lab tests and your own RUM fit, changes how you measure and fix performance.
Core Web Vitals as a Replatforming Success Metric: Real Before and After Numbers
When running a platform infrastructure review, you need objective metrics to evaluate options and measure success. Core Web Vitals gave us exactly that: here are the actual before/after numbers from a full replatforming, and why they mattered more than we expected.
Peak Trading Readiness: How We Prepare a Subscription Platform for Valentine's Day
For a flower subscription business, Valentine's Day is our Black Friday. Here's the readiness playbook I use: load testing, capacity planning, change freezes, kill switches, runbooks and a calm war room.
London Olympics 2012: Handling 100K Transactions Per Hour on AWS
During the London 2012 Olympics, Samsung ran a major digital campaign on TouchNote. We processed 100K transactions per hour at peak. Here's the AWS architecture that made it possible, and what nearly failed.