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LAB REPOSITORYPRO CODEBASE

Lease Leader Election

A lease-based leader election sketch with expiry and fencing tokens, showing the state transition behind one active worker.

JavaScriptDifficulty: starter
$node implementations/lease-leader-election/src/demo.js
Key Takeaways & Architecture Lessons
  • 01.A leader is only leader while its lease is valid.
  • 02.Fencing tokens help stale leaders avoid writing after losing leadership.
  • 03.Real deployments need a linearizable store for the lease record.

Protected Implementation File

Full source code for README.md is included in the Pro engineering package.

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