Level 2: Data · L2.2 Replication
Leaders and followers
Explain single-leader replication, sync vs async and failover.
12 min · Pro
What you take away
- One leader takes all writes and streams its change log to followers, which apply it in order.
And 3 more inside the class, in Pro.
How the class is laid out
- The problem
- The simple version
- What the leader sends, and when it waits
- Failover is where the interesting failures live
- Check your understanding