title: PHP: tmpfs vs memcached
body: <p>I want to store information (sessions and a lot of strings) in RAM and I don't know if I should use a tmpfs or a memcached server. Someone did some benchmark and knows which one is faster? It's needed for some ajax scripts that requests informations every 1-5 seconds per user who is logged in, like a webchat in PHP. So PHP has to connect to memcache quite often.</p>
  
  <p>The advantage of using tmpfs whould be that I can create a lot of files and have a structur (dirs), while I only have a key-value system in memcached, but there i could use arrays or objects to store information.
  CPU load whould be interesting, too, if there is any difference.</p>
  
  <p>Thanks.</p>