Why this week matters: SRE teams measure you by uptime, deployment safety, and operational controllability. Every exercise this week implements a capability your SRE team will demand before approving a production launch.
Background in this wiki: Linux guide Ch 74 (signals and PID 1), Ch 78 (file descriptors), Ch 81 (pprof leak hunting), Ch 82 (image, systemd, Kubernetes); TCP/IP guide Ch 57 (draining); HTTPS guide Ch 19 (graceful shutdown), Ch 21 (circuit breakers), Ch 23 (SLOs). Security in Depth: Chapter 52 (tamper-evident audit logs, Go lab).