On Sat, Oct 9, 2021 at 7:20 PM Jeff Jirsa <jji...@gmail.com> wrote: > Most LWT use cases use LOCAL_SERIAL because the difference in latency is > huge today (given the 4x RTTs) AND almost none of the users actually > understand how cassandra replication or consistency works, so they > misunderstand the guarantees provided by the choice they make. When > informed of the actual tradeoffs, a LOT of those users switch to SERIAL. >
This doesn't match my experience. I know of exactly two DataStax customers using SERIAL; I remember them because they're so unusual. On the other hand, I've talked to a dozen plus using LOCAL_SERIAL. I could try to get more exact numbers if it would help but back of the envelope, 5:1 in favor of LOCAL is about right. -- Jonathan Ellis co-founder, http://www.datastax.com @spyced
