Failure Modes & Blast Radius

Failure modes and blast radius, SLOs and error budgets, the three signals of observability, the retry patterns that cause outages rather than preventing them, and shipping a schema change without downtime.

This module is 06.1 of the 5 in Reliability & Operations. It runs about 4 hours across 5 lessons, and closes with Blast Radius — One dependency goes down. Trace what it takes with it before the pager does.