Introduction

Operating in Production: How to Read This Module

Here's the industry's uncomfortable statistic: most outages are self-inflicted. Not hardware, not traffic, not attackers: changes. A deploy, a config push, a migration: the system was fine until someone improved it. The reliability module taught you to survive the world's failures; this module teaches you to survive your own releases: and to see what's happening while you do.

Five patterns, two jobs. The first two are eyes: knowing whether each server should receive traffic, and following one request through thirty services