Part 08 · Replication

ShardKV 2: Leader Failover with Fencing

GoFailure detectionPromotionFencing token

Detect a dead leader, promote a follower, and use epoch-based fencing so the old leader's writes are rejected. Measure the data lost with sync vs async.

⏱ 2-3 hours · Station 74 of 123

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The route is mapped; the full walkthrough arrives here soon.