With Couchbase Server active, vbucket takes writes and reads by default, allowing for read-your-own-write (RYOW) capabilities in steady state, thanks to its memory-first write approach and quick replication through DCP to replicas and disk persistence. Queries can be configured to either read what's been processed or wait until all updates are processed, with the latter providing RYOW but at higher latency. In Couchbase Server 3.0, getting RYOW no longer requires persistTo flags, resulting in lower latency compared to previous versions, making it an attractive upgrade for users who need "stale=false" queries and views.