title: An In-memory database solution with quickest real time replication
body: <p>We have a 10 thousand row table that has just 2 columns, a primary key and a second column that keep state. The problem is that we need this state to be replicated across 3 physical locations in the US(about 2000 miles apart), in near real time or as fast as practically possible over a network. Any of the 3 locations can update the state for a given row in this table which should be replicated in near real time to the other 2 locations. </p>
  
  <p>Are there any open source or commercial light weight in-memory database that could help us achieve what we are trying to do. Disk persistence is not that important here.</p>