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Re:Show HN: Lockable – sync locks for distributed systems by Gwypaas on Saturday June 18, 2022 @08:43AM (#31789317)
Heartbeats does not solve it. You need fencing tokens to reject writes if the lock has expired.

See this amazing article by Martin Kleppman, author of Designing Data-Intensive Applications.

"How to do distributed locking"

https://martin.kleppmann.com/2016/02/08/how-to-do-distribute...

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