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GUGU / Algorithm-FloodControl-2.001000 / lib / Algorithm / FloodControl / Backend / Cache / FastMmap.pm 

            

              
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package Algorithm::FloodControl::Backend::Cache::FastMmap;
use utf8;
use strict;
use warnings;
use Params::Validate qw/:all/;
use base 'Algorithm::FloodControl::Backend';
__PACKAGE__->mk_accessors( qw/storage prefix expires/ );
=head2 increment
=cut
sub increment {
    my ( $self )       = @_;
    my $last_value   = $self->storage->get_and_set( 
        $self->_tail_name,  
        sub { $_[1] = ( $_[1] || 0 ) + 1 }
    );    # If it does not exists
    $self->storage->set( $self->_item_name($last_value ) => time + $self->expires, $self->expires );
    return 1;
}
=head2 clear
=cut
sub clear {
    my ($self) = @_;
    return $self->storage->remove( $self->_tail_name );
}
=head2 get_item
=cut
sub get_item {
    my $self = shift;
    my $item = shift;
    return $self->storage->get( $self->_item_name($item) );
}
sub _last_number {
    my $self = shift;
    return $self->storage->get( $self->_tail_name );
}
sub _tail_name {
    my $self = shift;
    return $self->prefix . "_end";
}
sub _item_name {
    my $self = shift;
    my $item = shift;
    return $self->prefix . "_$item";
}
1;
__END__
=head1 NAME
=head1 DESCRIPTION
=head1 BUGS
=head1 NOTES
=head1 AUTHOR
Andrey Kostenko (), <andrey@kostenko.name>
=head1 COMPANY
Rambler Internet Holding
=head1 CREATED
01.11.2008 14:49:11 MSK
=cut