Java at Alibaba [pdf]
Either I'm being very dense, or something doesn't quite make sense about these numbers.<p>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).<p>On the next slide it says they have 'millions of JVMs' running an 'insurmountable number' of requests.<p>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.<p>Needless to say, I am not DevOps, so feel free to set me right.