Blueflood – open source metric processing system

blueflood.io

12 pointsphilips2 comments

I wish there was more documentation about this. What I've figured out:

- Built on Cassandra

- Takes metrics POSTed as JSON objects

- Can do aggregation and roll-up but it's not clear how to configure this

- Can be queried, but I couldn't see any info on what queries are possible

It would also be nice to know what advantages this has over other monitoring tools - why wouldn't you use OpenTSDB instead, for example?

I think you have most of it right. The rollups are not configurable currently. However, we did give some thought into those pre-configured rollup granularities.

The query today is very simple. You can query data points for a metric you know by name. Look at retrieve metrics section of this guide: https://github.com/rackerlabs/blueflood/wiki/10minuteguide

I'd like to clarify that this is not a monitoring tool. This is a metrics aggregation engine for data collected using monitoring tools. We haven't benchmarked OpenTSDB. We have a lot of operational experience with Cassandra and one of the devs is a Cassandra committer. We are seeing good performance in terms of reads and writes from/to Cassandra. If you have other questions, please join #blueflood on freenode. I am one of the devs and I am in that channel too.

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