Add time-based cutoffs for public tag cloud, favorited lists to speed up those queries.

Defaulting to only looking at last 90 days of activity, can be adjusted up or down.

$config['tag']['cutoff'] = 86400 * 90;
$config['popular']['cutoff'] = 86400 * 90;

Per-user and per-group tag clouds do not use the cutoff (and it doesn't help with indexing on them).

1 files changed, 3 insertions, 0 deletions

diff --git a/actions/favorited.php b/actions/favorited.php
index 9ffa5b844..d8980440d 100644
--- a/actions/favorited.php
+++ b/actions/favorited.php
@@ -186,10 +186,13 @@ class FavoritedAction extends Action
     function showContent()
     {
         $weightexpr = common_sql_weight('fave.modified', common_config('popular', 'dropoff'));
+        $cutoff = sprintf("fave.modified > '%s'",
+                          common_sql_date(time() - common_config('popular', 'cutoff')));
 
         $qry = 'SELECT notice.*, '.
           $weightexpr . ' as weight ' .
           'FROM notice JOIN fave ON notice.id = fave.notice_id ' .
+          "WHERE $cutoff " .
           'GROUP BY id,profile_id,uri,content,rendered,url,created,notice.modified,reply_to,is_local,source,notice.conversation ' .
           'ORDER BY weight DESC';