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https://github.com/Znote/ZnoteAAC.git
synced 2025-04-26 01:09:22 +02:00
Fix #371 - fast APCu memory caching support
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Znote
parent
26c486ef27
commit
32e5b6278e
@ -54,6 +54,7 @@ if (user_logged_in()) {
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<h1>Changelog</h1>
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<?php
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$cache = new Cache('engine/cache/changelog');
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$cache->useMemory(false);
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if ($updateCache === true) {
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$changelogs = mysql_select_multi("SELECT `id`, `text`, `time`, `report_id`, `status` FROM `znote_changelog` ORDER BY `id` DESC;");
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11
config.php
11
config.php
@ -658,8 +658,15 @@
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'name' => 'Forgotten' // Must be identical to config.lua (OT config file) server name.
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);
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// How often do you want highscores to update?
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$config['cache_lifespan'] = 5; // 60 * 15; // 15 minutes.
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// How often do you want highscores (cache) to update?
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$config['cache'] = array(
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// If you have two instances installed on same server, make each instance prefix unique
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'prefix' => 'znote_',
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// 60 * 15; // 15 minutes.
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'lifespan' => 5,
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// Store cache in memory/RAM? Requires PHP extension APCu
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'memory' => true
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);
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// WARNING! Account names written here will have admin access to web page!
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$config['page_admin_access'] = array(
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@ -1,122 +1,167 @@
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<?php
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class Cache
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{
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protected $_file = false;
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protected $_lifespan = 0;
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protected $_content;
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class Cache
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{
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protected $_file = false;
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protected $_lifespan = 0;
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protected $_content;
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protected $_memory = false;
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protected $_canMemory = false;
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const EXT = '.cache.php';
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const EXT = '.cache.php';
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/**
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* @param string $file
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* @access public
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* @return void
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**/
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public function __construct($file) {
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$this->_file = $file . self::EXT;
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$this->setExpiration(config('cache_lifespan'));
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/**
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* @param string $file
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* @access public
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* @return void
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**/
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public function __construct($file) {
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$cfg = config('cache');
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$this->setExpiration($cfg['lifespan']);
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if (function_exists('apcu_fetch')) {
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$this->_canMemory = true;
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$this->_memory = $cfg['memory'];
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}
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$this->_file = $file . self::EXT;
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if (!$this->_memory && $cfg['memory']) die("
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<p><strong>Configuration error!</strong>
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<br>Cannot save cache to memory, but it is configured to do so.
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<br>You need to enable PHP extension APCu to enable memory cache.
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<br>Install it or set \$config['cache']['memory'] to false!
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<br><strong>Ubuntu install:</strong> sudo apt install php-apcu</p>
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");
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}
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/**
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* Sets the cache expiration limit (IMPORTANT NOTE: seconds, NOT ms!).
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*
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* @param integer $span
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* @access public
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* @return void
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**/
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public function setExpiration($span) {
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$this->_lifespan = $span;
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}
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/**
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* Sets the cache expiration limit (IMPORTANT NOTE: seconds, NOT ms!).
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*
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* @param integer $span
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* @access public
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* @return void
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**/
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public function setExpiration($span) {
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$this->_lifespan = $span;
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}
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/**
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* Set the content you'd like to cache.
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*
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* @param mixed $content
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* @access public
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* @return void
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**/
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public function setContent($content) {
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switch (strtolower(gettype($content))) {
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case 'array':
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$this->_content = json_encode($content);
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break;
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default:
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$this->_content = $content;
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break;
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}
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}
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/**
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* Validates whether it is time to refresh the cache data or not.
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*
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* @access public
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* @return boolean
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**/
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public function hasExpired() {
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if (is_file($this->_file) && time() < filemtime($this->_file) + $this->_lifespan) {
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return false;
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}
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/**
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* Enable or disable memory RAM storage.
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*
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* @param bool $bool
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* @access public
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* @return bool $status
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**/
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public function useMemory($bool) {
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if ($bool and $this->_canMemory) {
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$this->_memory = true;
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return true;
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}
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$this->_memory = false;
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return false;
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}
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/**
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* Returns remaining time before scoreboard will update itself.
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*
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* @access public
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* @return integer
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**/
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public function remainingTime() {
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$remaining = 0;
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if (!$this->hasExpired()) {
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$remaining = (filemtime($this->_file) + $this->_lifespan) - time();
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/**
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* Set the content you'd like to cache.
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*
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* @param mixed $content
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* @access public
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* @return void
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**/
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public function setContent($content) {
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$this->_content = (!$this->_memory && strtolower(gettype($content)) == 'array') ? json_encode($content) : $content;
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}
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/**
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* Validates whether it is time to refresh the cache data or not.
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*
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* @access public
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* @return boolean
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**/
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public function hasExpired() {
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if ($this->_memory) {
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return !apcu_exists($this->_file);
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}
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if (is_file($this->_file) && time() < filemtime($this->_file) + $this->_lifespan) {
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return false;
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}
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return true;
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}
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/**
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* Returns remaining time before scoreboard will update itself.
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*
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* @access public
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* @return integer
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**/
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public function remainingTime() {
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$remaining = 0;
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if ($this->_memory) {
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if (apcu_exists($this->_file)) {
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$meta = apc_cache_info('user');
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foreach ($meta['cache_list'] AS $item) {
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if ($item['info'] == $this->_file) {
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$remaining = ($item['creation_time'] + $item['ttl']) - time();
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return ($remaining > 0) ? $remaining : 0;
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}
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}
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}
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return $remaining;
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}
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if (!$this->hasExpired()) {
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$remaining = (filemtime($this->_file) + $this->_lifespan) - time();
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}
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return $remaining;
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}
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/**
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* Saves the content into its appropriate cache file.
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*
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* @access public
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* @return void
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**/
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public function save() {
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$handle = fopen($this->_file, 'w');
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fwrite($handle, $this->_content);
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fclose($handle);
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/**
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* Saves the content into its appropriate cache file.
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*
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* @access public
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* @return void
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**/
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public function save() {
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if ($this->_memory) {
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return apcu_store($this->_file, $this->_content, $this->_lifespan);
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}
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$handle = fopen($this->_file, 'w');
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fwrite($handle, $this->_content);
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fclose($handle);
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}
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/**
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* Loads the content from a specified cache file.
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*
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* @access public
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* @return mixed
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**/
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public function load() {
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if ($this->_memory) {
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return apcu_fetch($this->_file);
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}
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if (!is_file($this->_file)) {
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return false;
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}
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ob_start();
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include_once($this->_file);
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$content = ob_get_clean();
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/**
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* Loads the content from a specified cache file.
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*
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* @access public
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* @return mixed
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**/
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public function load() {
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if (!is_file($this->_file)) {
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return false;
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}
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if (!isset($content) && strlen($content) == 0) {
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return false;
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}
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ob_start();
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include_once($this->_file);
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$content = ob_get_clean();
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if (!isset($content) && strlen($content) == 0) {
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return false;
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}
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if ($content = json_decode($content, true)) {
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return (array) $content;
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} else {
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return $content;
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}
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if ($content = json_decode($content, true)) {
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return (array) $content;
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} else {
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return $content;
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}
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}
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}
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@ -15,6 +15,7 @@ require_once 'engine/init.php'; include 'layout/overall/header.php';
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// Changelog ticker //
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// Load from cache
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$changelogCache = new Cache('engine/cache/changelog');
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$changelogCache->useMemory(false);
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$changelogs = $changelogCache->load();
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if (isset($changelogs) && !empty($changelogs) && $changelogs !== false) {
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@ -4,6 +4,7 @@ if ($config['UseChangelogTicker']) {
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// Changelog ticker //
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// Load from cache
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$changelogCache = new Cache('engine/cache/changelog');
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$changelogCache->useMemory(false);
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$changelogs = $changelogCache->load();
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if (isset($changelogs) && !empty($changelogs) && $changelogs !== false) {
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