[Dancer-users] Memcached beginners problem

[Flavio Poletti]

The "crash" depends on the fact that all warnings are promoted to fatal
errors in the development environment.

It seems that you're getting a warning about a key that is not defined. It
would help to see the code that you use to retrieve the stuff in the
session, i.e. the calls to session().

Cheers,

   Flavio.

On Mon, Sep 26, 2011 at 4:59 PM, Niels Larsen <niels at genomics.dk> wrote:

> Greetings,
>
> I, a Dancer newcomer, have trouble getting Dancer::Session::Memcached
> to
> work. All works with session Simple, but with memcached I get the error
> below. The memcached server was started with ./memcached (responds on
> port
> 11211) and the Cache::Memcached module is installed. The application was
> started with just ./application.pl --environment development, and the
> development.yml file has in it
>
> session: "memcached"
> memcached_servers: "127.0.0.1:11211"
>
> I did not 'use Dancer::Session::Memcached' because documentation does
> not say so, and I'm sure its a dumb mistake by me. But the crash is not
> so informative, and the format of the listing could be also be improved:
> module names (not file names) and line numbers should be at the left so
> they line up, and the traceback should include application code. It only
> shows Dancer code.
>
> And a wish: the Messagepack library is the fastest serialization method,
> I think, and I hope Dancer will support it some day. I use it already,
> and Kyoto Tycoon for permanent storage, works well. Unlike Membase/cache
> one can save pretty big strings, which reduces the number of times one
> must touch the storage, which again speeds the whole thing.
>
> Niels Larsen
>
> http://genomics.dk
>
> ------------------------------------------------------------------------
>
> Error 500
> runtime error
>
> Warning caught during route execution: Use of uninitialized value $key
> in
> concatenation (.) or string at
> /home/donate/DONATE/Software/Package_installs/Perl_modules/lib/perl5/Cache/Memcached.pm
> line 521.
>
> 518     $exptime = int($exptime || 0);
> 519
> 520     local $SIG{'PIPE'} = "IGNORE" unless $FLAG_NOSIGNAL;
> 521     my $line = "$cmdname $self->{namespace}$key $flags $exptime $len
> \r\n$val\r\n";
> 522
> 523     my $res = _write_and_read($self, $sock, $line);
> 524
>
> ------------------------------------------------------------------------
>
>
>
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