Distributed server

Added a seperate store for xid & uid in server

Encapsulate Call within the client pool library, so we don't have to …

Encapsulate Call within the client pool library, so we don't have to expose the clients. Also, write tests for conn module.

Set up communication framework between workers

Loader unit test

Change function names to make their purpose clear

Changes to limit line length to 80 chars

Remove store and pass it as argument plus mod sharding based on attributes