title: Is erlang mnesia db suitable to save millions or more records?
body: <p>I wonder whether mnesia db is suitable to save million or more records or not?</p>
  
  <ol>
  <li>because mnesia's storage place has only 3, <code>ram, disc_only, disc</code>. It is not possible to save part of records in ram. I suspect that if I select <code>disc</code> for storage and record's quantity is huge, ram buffer efficiency is very low, and if <code>disc_only</code> for storage and speed is also slow.</li>
  </ol>
  
  <p>So in every situation, it is not correct choice to save many record, is it correct?</p>