Book: System Design Pocket Guide: Interviews

Also by me: Event-Driven Architecture Pocket Guide

My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools

Me: xgabriel.com | GitHub

Picture a growth team that ships a "weekly digest" on a Wednesday. The cron job enqueues a couple million emails in minutes, the email provider throttles the account for exceeding its contracted send rate, and the incident channel turns into a wall of red. Every notification produced after the throttle goes into a tight retry loop, which produces more 429s, which produces more retries.

The canonical failure mode is not volume.…