This page discusses implementing distributed locks with Redis, proposing the Redlock algorithm as a safer alternative to simple approaches. It provides links to various language-specific implementations. The safety and liveness guarantees of the algorithm are highlighted, emphasizing mutual exclusion and fault tolerance. It explains the correct implementation with a single instance before delving into the distributed Redlock algorithm. The asynchronous nature of the algorithm is explored, with a focus on ensuring mutual exclusion within a distributed environment. The content also addresses performance, crash recovery, and the importance of persistence. Lastly, it suggests extending lock lifetimes and provides a disclaimer regarding consistency issues.
https://redis.io/docs/latest/develop/use/patterns/distributed-locks/