Description:
I came across this detailed explanation on StackOverflow regarding transactions in Redis Cluster:
https://stackoverflow.com/questions/42088324/is-there-any-redis-client-java-prefered-which-supports-transactions-on-redis-c/42091605#42091605

The conclusion there was that:

• Transactions are safe if all keys are on the same node.
• Cross-slot transactions require trade-offs and are not natively supported.
• Clients have not agreed on a global strategy.

Questions:

• Is this explanation still relevant today for Redis Cluster transactions (as of Redis 7 / current client libraries)?

• If so, would it make sense to introduce a clear API to obtain a connection directly by node id or by slot in order to:

  • Safely manage single-node transactions.
  • Make it more explicit to the developer which node they’re interacting with.