Limit the tag query to a range of one day

Fixes #8619

diff --git a/mod/network.php b/mod/network.php
index 1506c707377fa196842c007aa462779a5ffe2741..1912ce788125d514f34fc3fc60893d6823ab218e 100644 (file)
--- a/mod/network.php
+++ b/mod/network.php
@@ -786,6 +786,13 @@ function networkThreadedView(App $a, $update, $parent)
                        $top_limit = DateTimeFormat::utcNow();
                }
 
+               // Handle bad performance situations when the distance between top and bottom is too high
+               // See issue https://github.com/friendica/friendica/issues/8619
+               if (strtotime($top_limit) - strtotime($bottom_limit) > 86400) {
+                       // Set the bottom limit to one day in the past at maximum
+                       $bottom_limit = DateTimeFormat::utc(date('c', strtotime($top_limit) - 86400));
+               }
+
                $items = DBA::p("SELECT `item`.`parent-uri` AS `uri`, 0 AS `item_id`, `item`.$ordering AS `order_date`, `author`.`url` AS `author-link` FROM `item`
                        STRAIGHT_JOIN (SELECT `uri-id` FROM `tag-search-view` WHERE `name` IN
                                (SELECT SUBSTR(`term`, 2) FROM `search` WHERE `uid` = ? AND `term` LIKE '#%') AND `uid` = 0) AS `tag-search`