On Tue, Aug 22 2017, witold.be...@est.fujitsu.com wrote:

Hi Witek,

> thank you for your contribution. We indeed urgently need a scalable open 
> source TSDB.

Did you look at Gnocchi? It's exactly that.

  http://gnocchi.xyz/

> In the recent weeks James Gu and his team have re-evaluated using Cassandra as
> Monasca backend [1]. They have measured write throughput of 64 kmetrics/s when
> storing 200 mil unique metric definitions and 50 bil measurements on the two
> nodes cluster. It's way below what InfluxDB can on the single node, but that's
> a number we can live with, I guess. Can GridDB perform better?
> 
> What do the others think? Should we experiment and add support for different
> backend drivers or rather choose one or two and concentrate on these?

We don't have any recent comparison with InfluxDB but last time we
tried, Gnocchi was already getting faster than it. And scalable
horizontally, so…

You might want to give it a try.

-- 
Julien Danjou
;; Free Software hacker
;; https://julien.danjou.info

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