Tunable consistency.
also: consistency level · consistency levels · per-query consistencyChoosing the consistency level per operation, such as Cassandra's ONE, QUORUM or ALL, or DynamoDB's strongly consistent reads.
the two-minute refresher
- DynamoDB: eventually consistent reads by default, strongly consistent reads on request (slower, costlier).
- Cassandra: consistency level per query, from ONE to QUORUM to ALL.
- Use strong reads for checkout and inventory, cheap reads for browsing.