I've been using Redis Cloud by Garantia Data for the past few months. They have automated infrastructure for (what I assume are) sharded Redis DBs, and they hav

I've been using Redis Cloud by Garantia Data for the past few months. They have automated infrastructure for (what I assume are) sharded Redis DBs, and they have a super reasonable pay-as-you-grow plan. http://redis-cloud.com/ http://redis-cloud.com/ They claim to support Redis DBs of "unlimited size"... until they run out of ram in the cloud :)