title: Laravel real time with socket.io
body: <p>I am experimenting real time app using Laravel and socket.io. I make a seperate node and redis server. Now I see several tutorials introducing redis to subscribe to channels. But I try without redis and socket.io is able to connect and emit etc.</p>
  
  <p>The question is, what is redis used for and are there any specific scenarios that redis is able to handle that socket.io can't?</p>
  
  <p>Thank you.</p>