Use the APC cache to store all of the counts and the recently updated
package list in a cache, which cuts down on the number of database queries
needed. If the data isn't perfectly up to date we will survive.

Signed-off-by: Dan McGee <[email protected]>
---
 web/lib/stats.inc                    |   52 +++++++++++++++++++++++-----------
 web/template/stats/updates_table.php |    5 +--
 2 files changed, 37 insertions(+), 20 deletions(-)

diff --git a/web/lib/stats.inc b/web/lib/stats.inc
index 6fbc033..deb246e 100644
--- a/web/lib/stats.inc
+++ b/web/lib/stats.inc
@@ -2,10 +2,38 @@
 
 include_once('aur.inc');
 
+# Check if APC extension is loaded
+if (!defined('EXTENSION_LOADED_APC'))
+       define('EXTENSION_LOADED_APC', extension_loaded('apc'));
+
+# run a simple db query, retrieving and/or caching the value if APC
+# is available for use
+#
+function db_cache_value($dbq, $dbh, $key)
+{
+       if(!(EXTENSION_LOADED_APC && ($ret = apc_fetch($key)))) {
+               $result = db_query($dbq, $dbh);
+               $row = mysql_fetch_row($result);
+               $ret = $row[0];
+               # set the TTL here in seconds: 300 seconds = 5 minutes
+               apc_store($key, $ret, 300);
+       }
+       return $ret;
+}
+
 function updates_table($dbh)
 {
-       $q = 'SELECT * FROM Packages WHERE DummyPkg != 1 ORDER BY 
GREATEST(SubmittedTS,ModifiedTS) DESC LIMIT 0 , 10';
-       $newest_packages = db_query($q, $dbh);
+       $key = 'aur_recent_updates';
+       if(!(EXTENSION_LOADED_APC && ($newest_packages = apc_fetch($key)))) {
+               $q = 'SELECT * FROM Packages WHERE DummyPkg != 1 ORDER BY 
GREATEST(SubmittedTS,ModifiedTS) DESC LIMIT 0 , 10';
+               $result = db_query($q, $dbh);
+
+               $newest_packages = new ArrayObject();
+               while ($row = mysql_fetch_assoc($result)) {
+                       $newest_packages->append($row);
+               }
+               apc_store($key, $newest_packages, 300);
+       }
        include('stats/updates_table.php');
 }
 
@@ -42,30 +70,20 @@ function general_stats_table($dbh)
 {
        # AUR statistics
        $q = "SELECT count(*) FROM Packages,PackageLocations WHERE 
Packages.LocationID = PackageLocations.ID AND PackageLocations.Location = 
'unsupported'";
-       $result = db_query($q, $dbh);
-       $row = mysql_fetch_row($result);
-       $unsupported_count = $row[0];
+       $unsupported_count = db_cache_value($q, $dbh, 'aur_unsupported_count');
 
        $q = "SELECT count(*) FROM Packages,PackageLocations WHERE 
Packages.LocationID = PackageLocations.ID AND PackageLocations.Location = 
'community'";
-       $result = db_query($q, $dbh);
-       $row = mysql_fetch_row($result);
-       $community_count = $row[0];
+       $community_count = db_cache_value($q, $dbh, 'aur_community_count');
 
        $q = "SELECT count(*) from Users";
-       $result = db_query($q, $dbh);
-       $row = mysql_fetch_row($result);
-       $user_count = $row[0];
+       $user_count = db_cache_value($q, $dbh, 'aur_user_count');
 
        $q = "SELECT count(*) from Users,AccountTypes WHERE Users.AccountTypeID 
= AccountTypes.ID AND AccountTypes.AccountType = 'Trusted User'";
-       $result = db_query($q, $dbh);
-       $row = mysql_fetch_row($result);
-       $tu_count = $row[0];
+       $tu_count = db_cache_value($q, $dbh, 'aur_tu_count');
 
        $targstamp = intval(strtotime("-7 days"));
        $q = "SELECT count(*) from Packages WHERE (Packages.SubmittedTS >= 
$targstamp OR Packages.ModifiedTS >= $targstamp)";
-       $result = db_query($q, $dbh);
-       $row = mysql_fetch_row($result);
-       $update_count = $row[0];
+       $update_count = db_cache_value($q, $dbh, 'aur_update_count');
 
        include('stats/general_stats_table.php');
 }
diff --git a/web/template/stats/updates_table.php 
b/web/template/stats/updates_table.php
index e1eb888..9d1af01 100644
--- a/web/template/stats/updates_table.php
+++ b/web/template/stats/updates_table.php
@@ -6,8 +6,7 @@
 </th>
 </tr>
 
-<?php while ($row = mysql_fetch_assoc($newest_packages)): ?>
-
+<?php foreach ($newest_packages->getIterator() as $row): ?>
 <tr>
 <td class="boxSoft">
 <span class="f4"><span class="blue">
@@ -34,7 +33,7 @@ endif;
 </td>
 </tr>
 
-<?php endwhile; ?>
+<?php endforeach; ?>
 
 </table>
 
-- 
1.6.1

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