From 0bc4ebafa5b305689ece7a57ddd7791fa8fe94e5 Mon Sep 17 00:00:00 2001
From: Shish <shish@shishnet.org>
Date: Sun, 24 Jun 2012 02:07:59 +0100
Subject: [PATCH] somewhat excessive caching for index pages

---
 ext/index/main.php | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/ext/index/main.php b/ext/index/main.php
index 2fe58742..c8a0273b 100644
--- a/ext/index/main.php
+++ b/ext/index/main.php
@@ -158,7 +158,16 @@ class Index extends Extension {
 			$page_size = $event->get_page_size();
 			try {
 				$total_pages = Image::count_pages($search_terms);
-				$images = Image::find_images(($page_number-1)*$page_size, $page_size, $search_terms);
+				if(SPEED_HAX && count($search_terms) == 0 && ($page_number < 10)) { // extra caching for the first few post/list pages
+					$images = $database->cache->get("post-list-$page_number");
+					if(!$images) {
+						$images = Image::find_images(($page_number-1)*$page_size, $page_size, $search_terms);
+						$database->cache->set("post-list-$page_number", $images, 600);
+					}
+				}
+				else {
+					$images = Image::find_images(($page_number-1)*$page_size, $page_size, $search_terms);
+				}
 			}
 			catch(SearchTermParseException $stpe) {
 				// FIXME: display the error somewhere
@@ -194,6 +203,24 @@ class Index extends Extension {
 		$event->panel->add_block($sb);
 	}
 
+	public function onImageAddition(ImageAdditionEvent $event) {
+		global $database;
+		if(SPEED_HAX) {
+			for($i=1; $i<10; $i++) {
+				$database->cache->delete("post-list-$i");
+			}
+		}
+	}
+
+	public function onImageDeletion(ImageDeletionEvent $event) {
+		global $database;
+		if(SPEED_HAX) {
+			for($i=1; $i<10; $i++) {
+				$database->cache->delete("post-list-$i");
+			}
+		}
+	}
+
 	public function onSearchTermParse(SearchTermParseEvent $event) {
 		$matches = array();
 		// check for tags first as tag based searches are more common.