badmanners/shimmie2
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better caching code

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This commit is contained in:
Shish 2009-08-09 13:11:54 +01:00
parent 1e8e5adbbf
commit a9a9318c41
2 changed files with 67 additions and 27 deletions
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91
core/util.inc.php
View file

@ -718,42 +718,81 @@ function _get_user() {
return $user;
}
$_cache_hash = null;
$_cache_memcache = false;
$_cache_filename = null;
function _cache_active() {
return ((CACHE_MEMCACHE || CACHE_DIR) && !isset($_COOKIE["shm_session"]) && !isset($_COOKIE["shm_nocache"]));
}
function _start_cache() {
$_do_cache = (CACHE && !isset($_COOKIE["shm_session"]) && !isset($_COOKIE["shm_nocache"]));
if($_do_cache) {
$hash = md5($_SERVER["QUERY_STRING"]);
$ab = substr($hash, 0, 2);
$cd = substr($hash, 2, 2);
$cachename = "data/$ab/$cd/$hash";
if(!file_exists("data/$ab/$cd/")) {
mkdir("data/$ab/$cd/", 0750, true);
}
if(file_exists($cachename)) {
$gmdate_mod = gmdate('D, d M Y H:i:s', filemtime($cachename)) . ' GMT';
global $_cache_hash, $_cache_memcache, $_cache_filename;
if(isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
$if_modified_since = preg_replace('/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"]);
if(_cache_active()) {
$_cache_hash = md5($_SERVER["QUERY_STRING"]);
if($if_modified_since == $gmdate_mod) {
header("HTTP/1.0 304 Not Modified");
header("Content-type: text/html");
if(CACHE_MEMCACHE) {
$_cache_memcache = new Memcache;
$_cache_memcache->pconnect('localhost', 11211);
$zdata = $_cache_memcache->get($hash);
if($zdata) {
header("Content-type: text/html");
$data = @gzuncompress($zdata);
if($data) {
print $data;
exit;
}
}
else {
header("Content-type: text/html");
header("Last-Modified: $gmdate_mod");
print gzuncompress(file_get_contents($cachename));
}
exit;
}
ob_start();
if(CACHE_DIR) {
$ab = substr($_cache_hash, 0, 2);
$cd = substr($_cache_hash, 2, 2);
$_cache_filename = "data/$ab/$cd/$_cache_hash";
if(!file_exists(dirname($_cache_filename))) {
mkdir(dirname($_cache_filename), 0750, true);
}
if(file_exists($_cache_filename) && (filemtime($cachename) > time() - 3600)) {
$gmdate_mod = gmdate('D, d M Y H:i:s', filemtime($_cache_filename)) . ' GMT';
if(isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
$if_modified_since = preg_replace('/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"]);
if($if_modified_since == $gmdate_mod) {
header("HTTP/1.0 304 Not Modified");
header("Content-type: text/html");
exit;
}
}
else {
header("Content-type: text/html");
header("Last-Modified: $gmdate_mod");
$data = @gzuncompress(file_get_contents($_cache_filename));
if($data) {
print $data;
exit;
}
}
}
ob_start();
}
}
}
function _end_cache() {
$_do_cache = (CACHE && !isset($_COOKIE["shm_session"]) && !isset($_COOKIE["shm_nocache"]));
if($_do_cache) {
file_put_contents($cachename, gzcompress(ob_get_contents()));
global $_cache_hash, $_cache_memcache, $_cache_filename;
if(_cache_active()) {
$data = gzcompress(ob_get_contents(), 9);
if(CACHE_MEMCACHE) {
$_cache_memcache->set($_cache_hash, $data, 0, 600);
}
if(CACHE_DIR) {
file_put_contents($_cache_filename, $data);
}
}
}
?>

3
index.php
View file

@ -52,7 +52,8 @@
// set up and purify the environment
define("DEBUG", true);
define("CACHE", false);
define("CACHE_MEMCACHE", false);
define("CACHE_DIR", false);
define("SCORE_VERSION", 's2hack');
define("VERSION", 'trunk');