Sheet ⁨03⁩ · ⁨Case studies⁩Surveyed ⁨2026⁩

Architecture

A Service Mesh Rollout That Was Worth It

A Service Mesh Rollout That Was Worth It

The request that started this was not "can we have a service mesh". It was an auditor asking how we encrypted traffic between services, and the honest answer being that we mostly did not. Everything i

Cutting p99 Latency 60% with a Caching Rearchitecture

Cutting p99 Latency 60% with a Caching Rearchitecture

The complaint that started this was not about speed. It was a support ticket saying the dashboard "sometimes doesn't load," from a customer whose account was roughly forty times larger than our median

Multi-Region Active-Active for a Payments API

Multi-Region Active-Active for a Payments API

A payments API that moves real money had been running comfortably in a single AWS region for years. It was reliable until the day it was not: a regional control-plane incident took the whole service o

Migrating a Monolith to Kubernetes Without a Big-Bang Cutover

Migrating a Monolith to Kubernetes Without a Big-Bang Cutover

Almost every failed "let's move off the monolith" project shares one detail: the plan was a big-bang cutover. Rewrite in parallel, pick a weekend, flip the switch, and pray. This is the opposite of th