Aphyr on Redis correctness:

So you’re running a distributed Redis install, and have realized that the design of Redis Sentinel (or, for that matter, any other failover system on top of an asynchronously replicated primary-secondary design) means you can lose a lot of data when a partition occurs. What can you do?

From an operations perspective, I recommend you try to understand the Sentinel consensus algorithm. I don’t, and I’ve read it a dozen times.

LOL.

π