Distributed Systems

🔴 P0 — the distributed transaction pattern for microservices; critical for Stripe payment flows

🔴 P0 — the classical distributed transaction protocol and why it’s limited

🟠 P1 — directly relevant to Stripe (multi-tenant SaaS platform)

🟠 P1 — store events, not state; the append-only log as source of truth

🟠 P1 — the understandable consensus algorithm; know conceptually, not implementation details

🟠 P1 — Peter Deutsch’s eight fallacies; useful as a shortcut reference in interviews

🟠 P1 — Command Query Responsibility Segregation; separate read and write models

🔴 P0 — minimises data movement when nodes are added or removed

🔴 P0 — how to split data across multiple databases when one isn’t enough

🔴 P0 — the mathematical foundation for consistency in replicated systems