I am hosting a sharded mongodb on ec2. I am planning on going with m4.large for my shard instances and t2.micro for my config servers. Should I go with m4.large for my mongos(query router) instances or can I go with something cheaper.
This is the initial number of instances I am going with:
2 Mongos, 3 Configs, 3 Shards * (2 server per shard) = 11 servers.
