I think Just writing all the time is much better, as most of replacements will be done in memtable.
also you should set a large memtable size, in compared with the average row size. 2010/8/27 Daniel Doubleday <daniel.double...@gmx.net> > Hi people > > I was wondering if anyone already benchmarked such a situation: > > I have: > > day of year (row key) -> SomeId (column key) -> byte[0] > > I need to make sure that I write SomeId, but in around 80% of the cases it > will be already present (so I would essentially replace it with itself). RF > will be 2. > > So should I rather just write all the time (given that cassandra is so fast > on write) or should I read and write only if not present? > > Cheers, > Daniel -- Best Regards, Chen Xinli
