Just a passing comment as I only use this module for testing purposes... I have noticed that Dancer::Session::YAML tries to initialize the sessions directory for every new session, causing the following log messages to appear repeatedly: [15144] core @0.000064> session_dir : /home/al/dancertest/sessions in /usr/local/libdata/perl5/site_perl/Dancer/Session/YAML.pm l. 34 [15144] core @0.097106> [hit #2]session_dir : /home/al/dancertest/sessions in /usr/local/libdata/perl5/site_perl/Dancer/Session/YAML.pm l. 34 [15144] core @0.086822> [hit #8]session_dir : /home/al/dancertest/sessions in /usr/local/libdata/perl5/site_perl/Dancer/Session/YAML.pm l. 34 [15144] core @0.085747> [hit #14]session_dir : /home/al/dancertest/sessions in /usr/local/libdata/perl5/site_perl/Dancer/Session/YAML.pm l. 34 [15144] core @0.095747> [hit #19]session_dir : /home/al/dancertest/sessions in /usr/local/libdata/perl5/site_perl/Dancer/Session/YAML.pm l. 34 This is inefficient and can be avoided by removing the following lines prepended with "x", so that the initialization code is run just once when the module is loaded by the "session" hook in Dancer::Config. x17 sub init { x18 my $self = shift; x19 $self->SUPER::init(@_); 20 21 croak "YAML is needed and is not installed" 22 unless Dancer::ModuleLoader->load('YAML'); 23 24 # default value for session_dir 25 setting('session_dir' => path(setting('appdir'), 'sessions')) 26 if not defined setting('session_dir'); 27 28 # make sure session_dir exists 29 my $session_dir = setting('session_dir'); 30 if (!-d $session_dir) { 31 mkdir $session_dir 32 or croak "session_dir $session_dir cannot be created"; 33 } 34 Dancer::Logger::core("session_dir : $session_dir"); x35 }