$cachePrefix = 'MyList';
    $cache = SS_Cache::factory($cachePrefix);

    //Kill TTL expiry
    SS_Cache::set_cache_lifetime($cachePrefix, 0);

    $AAP = MyClass::get();
    $cacheKey = strtotime($AAP->max('LastEdited'));

    if(!($result = unserialize($cache->load($cacheKey)))){
      $result = $AAP;
      $cache->save(serialize($result));
    }
    return $result;