Java at Alibaba [pdf]
Either I'm being very dense, or something doesn't quite make sense about these numbers.The slides say that on the busiest day of the year, they were serving around 175,000 transactions per second (126k of which, or maybe additionally, were payments).On the next slide it says they have 'millions of JVMs' running an 'insurmountable number' of requests.Is each JVM really taking 10s+ per transaction? Even assuming those JVMs are split between servers, messaging, caching, database, etc, I don't get why they need millions of them to handle c. 200k transactions per second.Needless to say, I am not DevOps, so feel free to set me right.