(chore): reduce tll on boost rotator

Controllers/api/v2/boost/feed.php

@@ -103,13 +103,13 @@ class feed implements Interfaces\Api
 
  $next = $iterator->getOffset();
 
- if (isset($boosts[2])) { // Always offset to 3rd in list
- $next = $boosts[2]->getTimestamp();
+ if (isset($boosts[1])) { // Always offset to 2rd in list
+ $next = $boosts[1]->getTimestamp();
  }
 
  $ttl = 1800; // 30 minutes
  if (($next / 1000) < strtotime('48 hours ago')) {
- $ttl = 300; // 5 minutes;
+ $ttl = 30; // 0.5 minutes;
  }
 
  $cacher->set(Core\Session::getLoggedinUser()->guid . ':boost-offset-rotator', $next, $ttl);