[chillydawg]

Not openTSDB. That's by far the most difficult to set up. It's also the best in terms of scalability and performance.

[SEJeff]

Actually, druid.io pretty handily beats it. I've witnessed (another team member) scale opentsdb to an obscene number of writes, but getting data out with more than 3-4 tags for a near-realtime dashboard was pretty much impossible.

Here is a comment on druid I posted recently:

https://news.ycombinator.com/item?id=11654715