I'm memory constrained and therefore memcache is not an option. The
pages makes a lot of independent SQL queries that is better handled
through one sql call via the db cache backend.

I suppose I could roll my own, but find it odd that somebody hasn't
fixed it. I would fix it myself, if I knew what was going on in there,
but I'm pretty new to Django.

On Jul 13, 9:55 am, "Cal Leeming [Simplicity Media Ltd]"
<cal.leem...@simplicitymedialtd.co.uk> wrote:
> May I ask why you are using a database cache, rather than something like
> memcache??
>
> Cal
>
>
>
>
>
>
>
> On Tue, Jul 12, 2011 at 5:09 PM, gamingdroid <gamingdr...@gmail.com> wrote:
> > I ran into this problem using django core's database cache:
>
> > ERROR:  duplicate key value violates unique constraint "cache_pkey"
> > STATEMENT:  INSERT INTO "cache" (cache_key, value, expires) VALUES (E':
> > 1:cms-menu_nodes_en-us_1', E'gAJdcQEoY21lbnVzLmJhc2UKTmF2aW
> > LOG:  server process (PID 8453) was terminated by signal 9: Killed
> > LOG:  terminating any other active server processes
> > LOG:  all server processes terminated; reinitializing
> > FATAL:  could not create shared memory segment: Cannot allocate memory
> > DETAIL:  Failed system call was shmget(key=5432001, size=29278208,
> > 03600).
>
> > I looked in the table and sure enough, there is an entry for the key ':
> > 1:cms-menu_nodes_en-us_1'. I found a similar issue here (http://
> > stackoverflow.com/questions/1189541/django-cache-set-causing-duplicate-
> > key-error), but was unable to exactly understand what the issue is.
>
> > Sounds like a bug in django core, since if a key exist, it should
> > update the record. It looks as if somebody posted a ticket here
> > (https://code.djangoproject.com/ticket/11569), but not entireloy sure
> > if it is related. This problem sort of renders the database backend
> > useless. I would fix it if I knew how and contribute back, but really
> > don't know how.
>
> > Anyone have any ideas or suggestions?
>
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