seniorNode.js
Distributed Locking with Node.js and Redis (Redlock)
Updated May 4, 2026
Short answer
Use the Redlock algorithm to ensure that a specific task is executed by only one Node.js instance at a time across a distributed cluster.
Deep explanation
In a multi-server setup, Server A must acquire a lock in Redis to run a task. The lock has a TTL to ensure it is released even if the server crashes.
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