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VictoriaVasys/sessions.md

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Last active April 3, 2017 17:43
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Sessions, Cookies, and Flashes
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sessions.md

Sessions, Cookies, and Flashes

  1. If we didn't have cookies and sessions, what would happen?
    There would be no data transfer/memory between each click of the page; victim of statelessness
  2. What is a cookie?
    object that you can access like a hash; store non-secure things in browser; expire
  3. What's the difference between a cookie and a session?
    session's data is serialized; more secure; expires at end of browser session. (session is maintained browser side, cookie = server-side)
  4. What's serialization and how does it come into play with sessions?
    Change format of storage; can't just read or edit- gives security
  5. Why would we want to store a user id in a session?
    keep track of decisions the user makes; roles of current_user; namespacing levels of user; who is it & what should they be able to see? Allows you to put logic in view. Session-specific so people can't mess around with admin/security
  6. What is a flash? How long does a flash have before it expires?
    another type of object used to send information through messages; self-destructs after opening (every page load). There are ways to change defaults (manually; keep?)
  7. What syntax would I use to add a user_id key and value to the session?
    session[:user_id] = "value"
  8. What does "HTTP is stateless" mean?
    Each request/response is brand-new again
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