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authorErich Eckner <git@eckner.net>2018-07-10 13:09:08 +0200
committerErich Eckner <git@eckner.net>2018-07-10 13:09:08 +0200
commitf038eb551e18a7cf0c751cc8f59334f5571c3142 (patch)
tree85b2d2fb1dc2c44f354c53c55ec731639180489c /mirrors/index.php
parentb25c0f34d54af2928be99d6fd3b0f1a691e6873d (diff)
mirrors/index.php: accelerate mysql query
Diffstat (limited to 'mirrors/index.php')
-rw-r--r--mirrors/index.php28
1 files changed, 11 insertions, 17 deletions
diff --git a/mirrors/index.php b/mirrors/index.php
index 83b0f06..617967c 100644
--- a/mirrors/index.php
+++ b/mirrors/index.php
@@ -6,21 +6,6 @@ require_once BASE . "/lib/style.php";
$cutoff = 3600;
-mysql_run_query(
- "CREATE TEMPORARY TABLE `ls` (`id` BIGINT NOT NULL, PRIMARY KEY (`id`))"
-);
-
-mysql_run_query(
- "INSERT INTO `ls` (`id`)" .
- " SELECT `ms`.`id`" .
- " FROM `mirror_statuses` AS `ms`" .
- " WHERE NOT EXISTS (" .
- "SELECT 1 FROM `mirror_statuses` AS `n_ms`" .
- " WHERE `n_ms`.`url`=`ms`.`url`" .
- " AND `n_ms`.`start`>`ms`.`start`" .
- ") AND `ms`.`start` > UNIX_TIMESTAMP(NOW())-" . $cutoff
-);
-
$result = mysql_run_query(
"SELECT " .
"GROUP_CONCAT(`l_ms`.`protocol`) AS `protocols`," .
@@ -30,8 +15,17 @@ $result = mysql_run_query(
"`l_ms`.`isos`," .
"`l_ms`.`ipv4`," .
"`l_ms`.`ipv6`" .
- " FROM `ls`" .
- " JOIN `mirror_statuses` AS `l_ms` ON `ls`.`id`=`l_ms`.`id`" .
+ " FROM (" .
+ "SELECT " .
+ "`mirror_statuses`.`url`," .
+ "MAX(`mirror_statuses`.`start`) AS `start`" .
+ " FROM `mirror_statuses`" .
+ " WHERE `mirror_statuses`.`start` > UNIX_TIMESTAMP(NOW())-" . $cutoff .
+ " GROUP BY `mirror_statuses`.`url`" .
+ ") AS `ls`" .
+ " JOIN `mirror_statuses` AS `l_ms`" .
+ " ON `ls`.`url`=`l_ms`.`url`" .
+ " AND `ls`.`start`=`l_ms`.`start`" .
" GROUP BY SUBSTRING(`l_ms`.`url`,LENGTH(`l_ms`.`protocol`)+4)"
);