We have been testing MongoDB 1.8.0 in two different environments. The first, a quite powerful testing server and the second, a “lab-cluster” build from tiny Proxmox -instances
Besides performance, they’ve been looking at automatic balancing, MongoDB cluster elasticity, automatic failover, SPOFs, etc.
Everything seems to have worked as expected for their tests, but there are also some things to be learned. For example, about adding new machines to the MongoDB cluster:
However in our tests it took sometimes 2 hours before the third shard started to get populated.
Original title and link: The First Weeks of MongoDB at IJENKO (NoSQL databases © myNoSQL)