Mostly curious how they have Redis setup. Article mentioned they're using it to buffer writes before hitting Cassandra but that seems pretty easy to lose data u

Mostly curious how they have Redis setup. Article mentioned they're using it to buffer writes before hitting Cassandra but that seems pretty easy to lose data unless they're running Redis in sync mode (afaik it's a lot slower) I've seen a similar architecture using Kafka to buffer writes but then you lose kv lookup at the buffer.