Consistency Models & Partition Behavior
"Eventual consistency" is not a single thing — it's a spectrum, and the right point on it is a business decision. Strong, causal, read-your-writes, monotonic, eventual — with per-operation tuning. How Google Spanner achieves global strong consistency, why DynamoDB defaults to eventual, and how LinkedIn tunes consistency per-operation in production.
This study guide is part of the full calibration library.
Staff interviews are decided on nuance — tradeoff framing, ownership boundaries, and failure anticipation. This study guide covers the depth that separates Senior from Staff+.
What's inside this study guide
Practice & Reference
- •Why This Matters
- •The 60-Second Version
- •How Consistency Works
- •The Consistency Spectrum
- •CAP and PACELC: The Real Framework
- •Per-Operation Consistency
- •Implementation Patterns
- •The Numbers in Context
- •How This Shows Up in Interviews
- •In the Wild
- •Staff Calibration
- •Practice Drill
- •Where This Appears