Consistency models: who sees a write, and when
What consistent really means: the visibility question, the trade-off triangle, six models from linearizable to eventual, CAP stated correctly, a consistency-aware repository, DynamoDB, Spanner and TAO, quorums and their limits, isolation levels and locking, and a shopping cart interview.
01 · Previously
W05 · DAY 01 · Consistency Models
What does consistent actually mean?
Previously: Week 5 preview
Previously, in the Week 5 preview, you met four hard problems: the last item sold twice, a transfer that loses money, an edit that vanishes, and two leaders at once.
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