/**
* cache searches by creating a checksum of the search parameters
* to keep the cache more accurate we also keep a dynamic cache-bust key for certain parameters
* so when listings affecting those parameters change the cache will be busted to reflect those changes.
*
* for example, let's say I was searching for all auctions from a given seller. When that seller
* creates a new auction, a cache key will be updated for the seller. The value of that cache key are
* always incorporated into my search checksum, so as a result the checksum changes and I instantly
* see the new listing by that seller the moment the auction is created.
*
* only cache for a very short time if the search query is time sensitive.
*/
public function search($options)
{
$options = Util::SearchOptions($options);
$search_vector = $this->searchVectors($options);
$key = '-search-/' . md5(print_r($options->export(), TRUE) . $search_vector);
$cache = $this->cache();
$res = $cache->get($key);
if (is_array($res)) {
return $res;
}
$res = $this->core->search($options);
$timeout = $this->searchCacheTimeout();
if (in_array($options->sort, array('just_added', 'expires_soon', 'expires_soon_delay'))) {
$timeout = 30;
}
$cache->set($key, $res, $timeout);
return $res;
}
