zlacker

Also, when you don't want to lose a message, the Redis persistence story requires careful thought. It requires setting up RDB + AOF + appendfsync=always + backups.

>>espadr+(OP)
This would just kill the performance on virtualized hardware like EBS. You would lose a lot of benefits of Redis at that point.

>>espadr+(OP)
You don't need to fsync on every write, that's what the replica is for. At lower/mid-tier hardware, network is faster than storage and your message is on multiple machines before it's even written to disk so fsync of 1 second is usually fine.