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authorDan McGee <dan@archlinux.org>2009-01-04 20:43:58 +0100
committerLoui Chang <louipc.ist@gmail.com>2009-01-08 17:48:58 +0100
commit5d6f465170392861c0438723fa98efd4732d30ec (patch)
treea4b8b2556f2fce6e464322107ceacd24483b8f98 /web/lib
parent92643bb8278f3f17d55e1e6c37210ddacb957dae (diff)
downloadaur-5d6f465170392861c0438723fa98efd4732d30ec.tar.gz
aur-5d6f465170392861c0438723fa98efd4732d30ec.tar.xz
Cache all front page stats in APC if available
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. This version of the patch will also cache the relevant counts for individual logged-in users and is more careful about checking whether the value actually exists in the cache by using the status reference to apc_fetch(). Signed-off-by: Dan McGee <dan@archlinux.org> Signed-off-by: Loui Chang <louipc.ist@gmail.com>
Diffstat (limited to 'web/lib')
-rw-r--r--web/lib/stats.inc53
1 files changed, 36 insertions, 17 deletions
diff --git a/web/lib/stats.inc b/web/lib/stats.inc
index 6fbc0334..e2b7f90f 100644
--- a/web/lib/stats.inc
+++ b/web/lib/stats.inc
@@ -2,10 +2,39 @@
include_once('aur.inc');
+# Check if APC extension is loaded
+if (!defined('EXTENSION_LOADED_APC'))
+ define('EXTENSION_LOADED_APC', extension_loaded('apc'));
+$apc_prefix = 'aur:';
+
+# run a simple db query, retrieving and/or caching the value if APC
+# is available for use
+#
+function db_cache_value($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 = $apc_prefix . 'recent_updates';
+ if(!(EXTENSION_LOADED_APC && ($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, $newest_packages, 300);
+ }
include('stats/updates_table.php');
}
@@ -42,30 +71,20 @@ function general_stats_table($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, $apc_prefix . '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, $apc_prefix . '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, $apc_prefix . '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, $apc_prefix . '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, $apc_prefix . 'update_count');
include('stats/general_stats_table.php');
}