Pure marketing comparing apples to oranges. Was Cassandra usage optimized? - What consistency level was used? (fastest reads with ONE) - Does Cassandra client used was token aware? (make request to appropriate node) - Was dynamic snitch turned off? (prevent forward request to other replica if can be processed locally) - Does Cassandra data model was used to mimic Couchbase data model? (Couchbase has only 1 value for 1 row) - What caching was used on Cassandra? (Couchbase uses memcache built-in)
For our use case we've seen much better results upon testing from single node. Throughput grows almost linearly adding nodes and growing amount of data to the same level as for single node. Single node stats: - A column family with 30 GiB compressed data per node (100 GiB uncompressed) - 1 row with 10-30 columns weighted 0.5-2 KiB uncompressed - 1 node with 6 cores 24 GiB RAM, 8 GiB heap, 1600 MiB new heap - key cache only, 2M keys - random reads 70%, random writes 30% - Read latencies 10ms AVE100 with CPU 95%, 50k reads/s - Read latencies <5ms AVE100 with CPU 60%, 20k reads/s In reality, with many column families with different amount of data, read/write rates, performance results may significantly vary. Just need to know what and how to optimize for Cassandra to get best results. Couchbase is not for our use case because of its data model (requires reads for updates/inserts), so we can't compare it to Cassandra. Best regards / Pagarbiai Viktor Jevdokimov Senior Developer Email: viktor.jevdoki...@adform.com Phone: +370 5 212 3063 Fax: +370 5 261 0453 J. Jasinskio 16C, LT-01112 Vilnius, Lithuania Disclaimer: The information contained in this message and attachments is intended solely for the attention and use of the named addressee and may be confidential. If you are not the intended recipient, you are reminded that the information remains the property of the sender. You must not use, disclose, distribute, copy, print or rely on this e-mail. If you have received this message in error, please contact the sender immediately and irrevocably delete this message and any copies.> -----Original Message----- > From: Radim Kolar [mailto:h...@filez.com] > Sent: Tuesday, December 11, 2012 17:42 > To: user@cassandra.apache.org > Subject: cassandra vs couchbase benchmark > > http://www.slideshare.net/Couchbase/benchmarking-couchbase#btnNext
