Distributed Consistency Models: What Your Service Actually Guarantees
At the large US tech company, the hardest design review conversations were almost never about which database to use. They were about what consistency guarantee the system needed, and whether the proposed design actually provided it. “Eventually consistent” is not a useful answer to “what does this service guarantee?” It describes the best case for a wide range of behaviours, some of which are harmless and some of which can cause correctness bugs in production. ...