That's failover -- essentially Redis Sentinel. Redis Cluster on the other hand orchestrates multiple redis instances to function as one, thereby preventing the

That's failover -- essentially Redis Sentinel. Redis Cluster on the other hand orchestrates multiple redis instances to function as one, thereby preventing the need for redis servers that are very large and preventing the need for presharding[1]. [1] http://blog.zawodny.com/2011/02/26/redis-sharding-at-craigslist/ http://blog.zawodny.com/2011/02/26/redis-sharding-at-craigsl...