title: What's the difference between the different Magento session types
body: <p>I looking for some information about the difference of the different session types available in Magento. </p>
  
  <p>There's a core session, a customer session and a checkout session. But I'm not quite sure when to use which one and how they might behave differently. Are they all valid for the same time or does a checkout session get invalidated earlier than the core session?</p>