On Thu, Jan 16, 2020 at 1:04 PM Laxmikant Upadhyay <laxmikant....@gmail.com> wrote:
> Hi, > What I meant fromActive/standby model is that even though data is being > replicated (asynchronously) to standby DC , client will only access the > data from active DC (let's say using local_quorum). > > you have "to switch" your clients without any issues since your writes are > replicated on all DC. > --> that is not true because there is a chance of mutation drop. (Hints, > read repair may help to some extent but data consistency is not guaranteed > unless you run anti- entropy repair ) > What are the consistency levels used by your application(s)? E.g. for strong consistency across multiple DCs you could use EACH_QUORUM for the write requests and LOCAL_QUORUM for reads, with a replication factor >= 3 per DC. -- Alex
