Hi Akira, thank you for your contribution. We indeed urgently need a scalable open source TSDB. Do you use this database in your Monasca deployment? Have you made write/read performance measurements when used with Monasca? I couldn't find much information about this database apart from the references you have provided. 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? Best greetings Witek [1] https://etherpad.openstack.org/p/cassandra_monasca > -----Original Message----- > From: Akira Yoshiyama [mailto:akirayoshiyama at gmail.com] > Sent: Samstag, 19. August 2017 15:31 > To: OpenStack Development Mailing List <openstack- > dev at lists.openstack.org> > Subject: [openstack-dev] [Monasca] GridDB repository support > > Hi all, > > Toshiba GridDB[1][2] is a highly scalable distributed NoSQL database for IoT > and Big Data. It has very good scalability and performance[3]. > It also has Community Edition licensed under GNU AGPL v3 and the source > code is available at Github[4][5][6]. > > It looks suitable for Monasca repository, so I'm writing GridDB repository > drivers for monasca-api/-persister[7][8]. They work well but need unit tests. > Anyone interested? > > Thank you, > Akira Yoshiyama > > [1]http://solutions.toshiba.com/overview.html > [2]https://griddb.net/en/docs/documents/1-1_what-is-griddb.php > [3]https://griddb.net/ja/blog/griddb-and-cassandra-ycsb-benchmarks/ > [4]https://github.com/griddb/griddb_nosql > [5]https://github.com/griddb/c_client > [6]https://github.com/griddb/griddb_client > [7]https://review.openstack.org/#/c/495504/ > [8]https://review.openstack.org/#/c/495505/ > > __________________________________________________________ > ________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: OpenStack-dev- > request at lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev