On Tue, 2014-09-02 at 17:34 +0300, Dmitriy Ukhlov wrote: > Hi Romain! > > > Thank you for useful info about your Cassandra backuping.
It's always a pleasure to talk about Cassandra :) > > We have not tried to tune Cassandra compaction properties yet. > > MagnetoDB is DynamoDB-like REST API and it means that it is key-value > storage itself and it should be able to work for different kind of > load, because it depends on user application which use MagnetoDB. The compaction strategy choice really matters when setting up a cluster. In such a use case, I mean MagnetoDB, we can assume that the database will be updated frequently. Thus LCS is more suitable than STCS. > Do you have some recommendation or comments based on information about > read/write ratio? Yes, if read/write ratio >= 2 then LCS is a must have. Just be aware that LCS is more IO intensive during compaction than STCS, but it's for a good cause. You'll find information here: http://www.datastax.com/dev/blog/when-to-use-leveled-compaction Best, Romain _______________________________________________ OpenStack-dev mailing list OpenStackemail@example.com http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev