How Scaling Only Cart and Checkout on Black Friday Cut Our Marketplace Infrastructure Bill

https://www.fingerlakes1.com/2026/02/03/most-cost-effective-composable-commerce-firms-for-usa-brands-in-2026/

After three failed marketplace projects, one sharp pull request on a Black Friday weekend taught me which parts of a platform truly need to scale. We used to spin up every service, every database replica, every cache cluster when traffic spiked