There are only two hard problems in computer science: 2. Correct-ordering of messages 1. Exact-once delivery 2. Correct ordering of messages This is my favo

There are only two hard problems in computer science: 2. Correct-ordering of messages 1. Exact-once delivery 2. Correct ordering of messages This is my favourite variation of the form documented by Fowler here https://www.martinfowler.com/bliki/TwoHardThings.html https://www.martinfowler.com/bliki/TwoHardThings.html