Can ZooKeeper be used for implementing distributed locks?

Yes, ZooKeeper can be used to implement distributed locks. ZooKeeper is a distributed coordination service that can be used to solve some shared resource management issues in distributed systems, including distributed locks. By creating a temporary sequential node in ZooKeeper to represent the lock, each client will create a temporary sequential node under a specific path when attempting to acquire the lock. They will then check if their created node is the current smallest node. If it is, they will acquire the lock, if not, they will listen for changes in the previous node. This way, the functionality of distributed locks can be implemented.