Chapter 3 — Architecture Reviews: Defending Decisions

System Design

Principal/Staff-level system design reference collection for MAANG interview preparation — observability pipelines, distributed systems, reliability engineering, and beyond.

Chapter 1 — Interview Methodology

Requirement gathering, capacity estimation, API design, data modeling, scaling, and bottleneck analysis as the repeatable sequence behind every design in this book.

Chapter 2 — Whiteboarding & Communication

Diagramming and narrating a design out loud so an interviewer can follow the trade-off reasoning, not just the final architecture.

Chapter 4 — Alerting Systems

Multi-window burn-rate alerts, recording rules, routing, and deduplication as the difference between an actionable page and noise.

Chapter 3 — Monitoring at Scale

Prometheus, Mimir, Cortex, and Thanos as the horizontally-scaled answer to a single Prometheus instance running out of room.