Databases · Senior · Question 30 of 75
In a quorum system with N replicas, why do R + W > N reads and writes give up-to-date reads?
- 1Because N is always an odd number
- ✓Correct answer: Every read set overlaps with every write set, so at least one replica in the read has the latest write
- 3Because reads are always faster than writes
Explanation
With N=3, W=2, R=2, any two replicas share at least one. Edge cases (sloppy quorums, concurrent writes) still need conflict resolution.