I suggest checking out M3DB[1]. My team & I use it to serve metrics for all of Uber, we have ~1500 hosts across various clusters. It's serving us quite well. [

I suggest checking out M3DB[1]. My team & I use it to serve metrics for all of Uber, we have ~1500 hosts across various clusters. It's serving us quite well. [1]: https://github.com/m3db/m3 https://github.com/m3db/m3