I was playing with Membase and now I have some doubts regarding its scalability. Lets take simple use case. Suppose I have already two nodes( join cluster) each having 1 GB of Membase RAM quota and each is stored with some data.
Consider I am adding one new node ( to join as cluster) with 1 GB RAM quota. I have a few questions;
(1) Can I get better performance with 3 nodes compared with performance of 2 nodes?
(2) Is scalability only gives advantage of having more RAM quota size ( here i will get a total of 3GB RAM with 3 nodes, than 2 GB RAM with2 nodes) so as to store more data?