title: MySQL sharding approaches?
body: <p>What is the best approach for Sharding MySQL tables.
  The approaches I can think of are :</p>
  
  <ol>
  <li>Application Level sharding?</li>
  <li>Sharding at MySQL proxy layer?</li>
  <li>Central lookup server for sharding?</li>
  </ol>
  
  <p>Do you know of any interesting projects or tools in this area?</p>