basho/riak_wiki — comment on commit f03689275d851d78560faa880f462dfdff78a333
File:  line 0
By gburd:

Clusters should never be smaller than 4 nodes. Start out the example as 64/4 = 16 so 1/16th of 8GB. You might also mention that this doesn't take into account situations where you have a node down and other nodes are acting as fall-backs (so it's really 1/16th + estimated fall-backs in your worst case). At some point in the future we should change eLevelDB so that it maintains a shared cache pool across all vnodes, then it won't matter.