Replication
Leader-follower, multi-leader and leaderless topologies, sync vs async durability, quorum reads and writes, replication lag and conflict resolution.
- 1✓
Leader–follower, multi-leader, leaderless — what does each buy you, and what does each cost?
senior - 2✓
Synchronous vs asynchronous replication — what exactly do you lose on failover?
senior - 3✓
Explain quorum reads and writes: why R + W > N, and where the guarantee leaks.
staff🎬 animated - 4✓
Your read replicas are 8 seconds behind under load. Walk through diagnosis and mitigation.
senior - 5✓
Two replicas accepted conflicting writes to the same key. What are your options, and why is last-write-wins so dangerous?
architect