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Move algorithm for caching to Notice class

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Moved the algorithm for notice stream caching to the Notice class.
This commit is contained in:
Evan Prodromou
2009-04-29 11:27:45 -04:00
parent f8c34711b4
commit 10ef8a2f71
2 changed files with 60 additions and 51 deletions
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55
classes/Notice.php
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@@ -967,4 +967,59 @@ class Notice extends Memcached_DataObject
array('notice' => $this->id));
}
}
function stream($fn, $args, $cachekey, $offset=0, $limit=20, $since_id=0, $before_id=0, $since=null)
{
$cache = common_memcache();
if (empty($cache) ||
$since_id != 0 || $before_id != 0 || !is_null($since) ||
($offset + $limit) > NOTICE_CACHE_WINDOW) {
return call_user_func_array($fn, array_merge($args, array($offset, $limit, $since_id,
$before_id, $since)));
}
$idkey = common_cache_key($cachekey);
$idstr = $cache->get($idkey);
if (!empty($idstr)) {
// Cache hit! Woohoo!
$window = explode(',', $idstr);
$ids = array_slice($window, $offset, $limit);
return $ids;
}
$laststr = common_cache_key($idkey.';last');
if (!empty($laststr)) {
$window = explode(',', $laststr);
$last_id = $window[0];
$new_ids = call_user_func_array($fn, array_merge($args, array(0, NOTICE_CACHE_WINDOW,
$last_id, 0, null)));
$new_window = array_merge($new_ids, $window);
$new_windowstr = implode(',', $new_window);
$result = $cache->set($idkey, $new_windowstr);
$result = $cache->set($idkey . ';last', $new_windowstr);
$ids = array_slice($new_window, $offset, $limit);
return $ids;
}
$window = call_user_func_array($fn, array_merge($args, array(0, NOTICE_CACHE_WINDOW,
0, 0, null)));
$windowstr = implode(',', $new_window);
$result = $cache->set($idkey, $windowstr);
$result = $cache->set($idkey . ';last', $windowstr);
$ids = array_slice($window, $offset, $limit);
return $ids;
}
}