Setting up Zend Framework DB garbage collection in application.ini? (and bootstrap ?)

Question

I'm storing all my sessions into the database with this in the application.ini

/* Session */
resources.session.use_only_cookies = on
resources.session.gc_maxlifetime = 864000
resources.session.remember_me_seconds = 864000
resources.session.cookie_lifetime = 864000
resources.session.name= "sessionName"

resources.session.saveHandler.class = "Zend_Session_SaveHandler_DbTable"

resources.session.saveHandler.options.name = "sessions"
resources.session.saveHandler.options.primary = "id"
resources.session.saveHandler.options.modifiedColumn = "modified"
resources.session.saveHandler.options.dataColumn = "data"
resources.session.saveHandler.options.lifetimeColumn = "lifetime"

The expired session aren't being deleted in the database. What am I missing? Should there be something in the bootstrap? If anyone can help it would be appreciated. Thank you.

Answer 1

It looks like an expired session is deleted from the database when the session is read or when destroy is called.

//from Zend_Session_SaveHandler_DbTable
 public function read($id)
    {
        $return = '';

        $rows = call_user_func_array(array(&$this, 'find'), $this->_getPrimary($id));

        if (count($rows)) {
            if ($this->_getExpirationTime($row = $rows->current()) > time()) {
                $return = $row->{$this->_dataColumn};
            } else {
                $this->destroy($id);
            }
        }

        return $return;
    }


 public function destroy($id)
    {
        $return = false;

        if ($this->delete($this->_getPrimary($id, self::PRIMARY_TYPE_WHERECLAUSE))) {
            $return = true;
        }

        return $return;
    }

There may be other instances where the database record is removed but I haven't located them.