Looks awesome.

ES is good but it takes a small army to keep on top of the performance and management. And then there's the upgrades which will fix a few bugs and introduce new ones too.

How would you compare Vespa to ES when it comes to CPU/memory requirements and performance for something like log indexing and search use case?

Seen that and starred probably half a year ago. Never had the time to dig around and see what it’s like in perf, operations and scalability.