 href="../libraries/sessions.html"><span class="doc">Session Library</span></a> has been completely
re-written in CodeIgniter 3 and now comes with a bunch of new features,
but that also means that there are changes that you should make …</p>
<p>Most notably, the library now uses separate storage drivers instead of
always relying on (encrypted) cookies.
In fact, cookies as storage have now been removed and you must always use
some kind of server-side storage engine, with the file-system being the
default o