From 0b12bbf2a35bbc6e53f83ec85ff5040526ce81aa Mon Sep 17 00:00:00 2001
From: Shish <shish@shishnet.org>
Date: Sat, 22 Jan 2011 17:37:12 +0000
Subject: [PATCH] cache popular tags

---
 ext/tag_list/main.php | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/ext/tag_list/main.php b/ext/tag_list/main.php
index 32000351..8be3fa08 100644
--- a/ext/tag_list/main.php
+++ b/ext/tag_list/main.php
@@ -283,16 +283,21 @@ class TagList implements Extension {
 		global $database;
 		global $config;
 
-		$query = "
-			SELECT tag, count
-			FROM tags
-			WHERE count > 0
-			ORDER BY count DESC
-			LIMIT ?
-		";
-		$args = array($config->get_int('tag_list_length'));
+		$tags = $database->cache->get("popular_tags");
+		if(empty($tags)) {
+			$query = "
+				SELECT tag, count
+				FROM tags
+				WHERE count > 0
+				ORDER BY count DESC
+				LIMIT ?
+				";
+			$args = array($config->get_int('tag_list_length'));
+
+			$tags = $database->get_all($query, $args);
+			$database->cache->set("popular_tags", $tags, 600);
+		}
 
-		$tags = $database->get_all($query, $args);
 		if(count($tags) > 0) {
 			$this->theme->display_popular_block($page, $tags);
 		}