Quorum Reads & Writes
🔴 P0 — the mathematical foundation for consistency in replicated systems
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Reliability, Consistency & Synchronisation
How distributed systems maintain correctness, recover from failures, and coordinate. This section merges reliability (fault tolerance) with consistency (data correctness) because they are inseparable in practice.
| Pattern | Priority |
|---|---|
| Consistency Models | 🔴 P0 |
| CAP Theorem & PACELC | 🔴 P0 |
| Quorum Reads & Writes | 🔴 P0 |
| Raft Consensus | 🟠P1 |
| Two-Phase Commit (2PC) | 🔴 P0 |
| Saga Pattern | 🔴 P0 |
| Timeout Strategies | 🔴 P0 |
| Circuit Breaker | 🔴 P0 |
| Retry with Backoff & Jitter | 🔴 P0 |
| Bulkhead Isolation | 🟠P1 |
| Ordering & Causality | 🟠P1 |