As far as I can tell, here are the main differences:
- OpenTSDB does not deteriorate data over time, unlike graphite where the size of the database is pre-determined.
- OpenTSDB can store metrics per second, as opposed to graphite which has minute intervals (I'm not sure of this, graphite docs show retention policies which stores metrics every minute, but I don't know if this is the minimum unit of time we can play with)
I want to make an informed decision about which tool to use in order to store metrics, have I missed any other differences in these 2 systems? How performant/scalable are they?
Bonus Question: Is there any other time series system I should look at?