title: Is there any way to save PHP sessions in RAM?
body: <p>I have php with nginx. I want to make PHP save it's sessions on RAM for security reasons. Is there any way doing it?</p>
  
  <p>If it's impossible, is there is any advice to make php sessions unrecoverable from hard disk after the server is shutdown?</p>
  
  <p>After a lot of searching I've found the <code>Shared memory</code> module of php, which can be used like persistent memory cache over sessions. is it shared with other applications too?, and how secure is it?</p>