title: redis vs native sessions
body: <p>I am using sessions in PHP to track if a user is logged in. I do not use it to store any other data about the user; essentially it is like checking a hash table to see if the user has authenticated.</p>
  
  <p>Would there be some advantage to using redis instead of native PHP sessions?</p>
  
  <p>I'm curious about performance, scalability, and security (not really concerned with code complexity).</p>