Scaling Primitives
Replication & consistency
Lesson 5 of 5
Replication buys availability and read scale; sync vs async and quorum sizing decide whether a read can see the latest write.
What you'll learn
- Contrast leader/follower replication with sync vs async propagation
- State CAP honestly: under partition you choose consistency or availability
- Use the quorum rule R + W > N to guarantee reads see the latest write
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