Distributed lock: In a distributed environment, the setnx command can be used to implement a distributed lock, ensuring that only one client can access the lock at a time.
Prevent duplicate submissions: When a user submits a form or request, the setnx command can be used to prevent the user from submitting the same data again.
High concurrency scenario: In high concurrency scenarios, the setnx command can be used to ensure that certain operations can only be executed once, such as limiting the number of user registrations or limiting the number of text messages sent.
Cache warming: During cache warming, the setnx command can be used to ensure that only one client is performing the cache warming operation, avoiding redundant work.
Subscriber pattern: you can use the setnx command to implement a subscriber lock in the publish/subscribe pattern, ensuring that only one subscriber can receive the message.
