title: Best way to synchronize cache data between two servers
body: <p>Want to synchronize the cache data between two servers. Both database is sharing the same database, but for better execution data i have cached the data into Hash Map at startup.
  Thus want to synchronize the cached data without restarting servers. (Both servers starts at same time).</p>
  
  <p>Please suggest me the best and efficient way to do.</p>