A significant drawback of the hotspot JVM is the amount of memory required for even simple apps. At least 64Mi for the most simple, and typically much higher. A typical web app with a 1000 request threads will use something like 1.5Gi of memory (512Mi heap, 1Gi for thread stacks, classes, etc).

Golang apps tend to happily run with less than 100Mi, so are well suited as daemon processes that don't get in the way.

However if you need to support a large amount of dynamic state (> 1Gi), the hotspot GC is very difficult to beat.