Re:No to SQL? Anti-database movement gains steam
by jrockway on Thursday July 02, 2009 @06:38AM
(#684136)
Really? Cassandra can write 416TB, 666GB per second? If Cassandra can write 50GB in 0.12ms, then it can write over 416TB in a second and 25petabytes per minute. Which clearly isn't true. Of course, that quote would also mean that MySQL can save 166GB per second.
If you click through to the slides, they are actually referring to latency. The slides say that for accesses of > 50GB, Cassandra's latency is 0.12ms, and MySQL's is around 300ms.
This, of course, has very little to do with the rate at which data is written.
(Yay for IT journals... quality information for PHBs...)
If you click through to the slides, they are actually referring to latency. The slides say that for accesses of > 50GB, Cassandra's latency is 0.12ms, and MySQL's is around 300ms.
This, of course, has very little to do with the rate at which data is written.
(Yay for IT journals... quality information for PHBs...)