Re: [Kimchi-devel] [PATCH] issue #325: Use RamSession instead of FileSession
2014/2/25 23:22, Adam King:
On 2/25/2014 8:42 AM, Sheldon wrote:
> Not sure RamSession is a good choice.
What are your concerns with RamSession?
>
> What's the different between MemcachedSession and RamSession.
Memcached is a distributed memory cache:
http://en.wikipedia.org/wiki/Memcached
which seems like overkill given that we do not presently have a
clustering solution.
At this point we are using the session to cache information about the
user:
groups that they are in
whether or not they have sudo
others?
The user session will totally lost When Kimchi server get reboots and
this is a big surprise to the user.
All of those are fairly simple to reconstruct in the case that the
session gets lost or destroyed.
i.e. RamSession seems appropriate for the current session usage pattern.
Even for
RamSession, we need to check that no racing condition exists
when two requests access the big session dictionary at the same time. I
searched a bit, no clear answer yet.