Tobias Kremer wrote:
After deploying our new Catalyst application I'm receiving this
error quite often per day:
"DBIx::Class::ResultSet::find_or_create(): DBI Exception:
DBD::mysql::st execute failed: Duplicate entry
'flash:9b11b5354715b56c9395abdf21544e83db5b0814' for key 1
[...] at /usr/local/lib/perl5/site_perl/5.8.8/Catalyst/Plugin/
Session/Store/DBIC/Delegate.pm line 52"
I'm using MySQL and I'm quite sure that this is _NOT_ a locking
issue (or MySQL's fault as somebody on the list recently suggested)
because the session stuff without the flash works perfectly.
Any ideas what could be wrong here? Thanks!
--Tobias
Did I not see something on here, or on DBIx-class list some time ago to
the effect that in find_or_create there is a short window where having
found that a record does not exist it then creates it. I presume that
two threads could each detect that a record does not exist and then one
of them would create this error.
Reversing the order (try a create first, catch the error, then do a find
if the create fails) was ISTR the proposed answer.
But this may not help you if the problem is in the
Session/Store/DBIC/Delegate plugin.
Regards
Ian
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