exptime unclear

[Adam Dixon]

So can anyone confirm this behavior? It maintains this behavior in 1.2.1 also.

Regards
Adam

On 12/21/06, Adam Dixon <adamtdixon at gmail.com> wrote:
> Version 1.2.0
>
> On 12/21/06, Neulinger, Nathan <nneul at umr.edu> wrote:
> > What version of memcached are you running? There was a bug that sounded
> > a lot like this fixed a while back.
> >
> > -- Nathan
> >
> > ------------------------------------------------------------
> > Nathan Neulinger                       EMail:  nneul at umr.edu
> > University of Missouri - Rolla         Phone: (573) 341-6679
> > UMR Information Technology             Fax: (573) 341-4216
> >
> >
> > > -----Original Message-----
> > > From: memcached-bounces at lists.danga.com
> > > [mailto:memcached-bounces at lists.danga.com] On Behalf Of Adam Dixon
> > > Sent: Wednesday, December 20, 2006 12:11 AM
> > > To: memcached at lists.danga.com
> > > Subject: exptime unclear
> > >
> > > Hello all,
> > > I have memcached running for our authentication systems, which hinges
> > > on the UNIX_TIMESTAMP(ExpireDate) which I use to also expire the
> > > memcached record.
> > >
> > > What I have found is that, if a record is set, and the timestamp is
> > > already passed the current time, it caches it - and sometimes keeps
> > > it, whereas I would have thought it to dump it straight away as
> > > expired.
> > >
> > > I would of thought that this was how it would work? Instead it appears
> > > to have something to do with how long the server has been up.
> > >
> > > # perl y.pl 5700
> > > Setting key with exp of 1166588860
> > > The time is now 1166594560 which is -5700 seconds diff.
> > > memcached up for 5662, started at 1166588898 and exptime of -38
> > > Get key ... Gotit.
> > > memcached up 5662sec.
> > > Get key ... Gotit.
> > > .....
> > > memcached up 5667sec.
> > > Get key ... Gotit.
> > > memcached up 5668sec.
> > > Get key ... Gotit.
> > > memcached up 5669sec.
> > > ....
> > >
> > > Ok so a object that's 5600 seconds old stays in the cache? for how
> > > long I don't know.
> > >
> > > # perl y.pl 5600
> > > Setting key with exp of 1166588972
> > > The time is now 1166594572 which is -5600 seconds diff.
> > > memcached up for 5673, started at 1166588898 and exptime of 74
> > > Get key ...DontGotit.
> > > memcached up 5673sec.
> > > Get key ...DontGotit.
> > > .....
> > > memcached up 5676sec.
> > > Get key ...DontGotit.
> > > memcached up 5677sec.
> > > ....
> > >
> > > This one however is not in the cache, which is to be expected.
> > >
> > > Is there pseudo code for this process?
> > > Is this a bug or do I have to change all my application code to
> > > somehow handle this? OR I have it completely wrong.
> > >
> > > Kind regards,
> > > Adam
> > >
> > >
> >
> >
>