+ // For the first 12 hours we'll try to deliver every 15 minutes
+ // After that, we'll only attempt delivery once per hour.
+
+ $r = q("SELECT `id` FROM `queue` WHERE (( `created` > UTC_TIMESTAMP() - INTERVAL 12 HOUR && `last` < UTC_TIMESTAMP() - INTERVAL 15 MINUTE ) OR ( `last` < UTC_TIMESTAMP() - INTERVAL 1 HOUR ))");
+ }