CREATE TABLE sessions (
        id CHAR(32) NOT NULL UNIQUE,
        a_session TEXT NOT NULL,
        expires int unsigned NOT NULL
    );

##</code><code>##

sub store {
    my ($self, $sid, $options, $data) = @_;   

    my $dbh = $self->MySQL_dbh($options);
    my $lck_status = $dbh->selectrow_array(qq|SELECT GET_LOCK("$sid", 10)|);
    unless ( $lck_status == 1 ) {
        $self->error("Couldn't acquire lock on id '$sid'. Lock status: $lck_status");
        return undef;
    }

    $dbh->do(qq|REPLACE INTO $TABLE_NAME (id, a_session, expires) VALUES(?,?,?)|, undef, $sid, $self->freeze($data),$self->expire() + $self->atime());
    
    return $dbh->selectrow_array(qq|SELECT RELEASE_LOCK("$sid")|);
}

##</code><code>##

$dbh->do("delete from sessions where expires<?",undef,time());