[antirez]

Hello, I'm not sure I totally get 1 and 2, maybe sometimes you write "cluster" instead of "node"? Btw I'll try to reply.

1) The amount of connections is not very relevant. You can set a max limit if you want, like with the redis-rb-client that will close old connections before opening new ones if the limit set by the user is less than the number of master nodes. However this is not recommendable as actually what is an idle connection? Just an entry in a data structure of the kernel. So it is not an issue for every client running in a given box to have multiple connections to multiple nodes.

2) The limit in the partition resistance in Redis Cluster is a fundamental design trade off, it means no need for a "merge" operation and that in a given moment only one node is responsible for a given key. I think that in the case of Redis most of the times less partition tolerance in favour of a simpler consistency model is what users need.

EDIT: a clarification on "1", what I mean is that every connection will be active only for the subset of keys it holds, so basically the traffic of every client is split across all its connections. Similarly every node of the cluster only performs a percentage of work proportional to the number of hash slots it holds compared to the full set of 16k hash slots.

EDIT 2: it is not clear from your point "2" if you understand you can have B2, B3, B4, BN if you want.