场景
yii2使用FielCache缓存网页,时间长了之后,堆在一起不好清理
解决
自定义文件的缓存文件名的规则
. yiicachingCache;
. yiicachingyiicaching;
/**
* Builds a normalized cache key from a given key.
*
* If the given key is a string containing alphanumeric characters only and no more than 32 characters,
* then the key will be returned back prefixed with [[keyPrefix]]. Otherwise,a normalized key
* is generated by serializing the given key,applying MD5 hashing,and prefixing with [[keyPrefix]].
*
* @param mixed $key the key to be normalized
* @return string the generated cache key
*/
public function buildKey($key)
{
if (is_string($key)) {
//$key = ctype_alnum($key) && StringHelper::byteLength($key) <= 32 ? $key : md5($key);
// 修改文件名的规则 如果文件名的长度大于100或者不全是数字字母,md5加密生成新的文件名
$key = ctype_alnum($key) && StringHelper::byteLength($key) <= 100 ? $key : md5($key);
} else {
$key = md5(json_encode($key));
}
return $this->keyPrefix . $key;
}
protected function setValue($key,$value,$duration)
{
$this->gc();
$cacheFile = $this->getCacheFile($key);
if ($this->directoryLevel > 0) {
@FileHelper::createDirectory(dirname($cacheFile),$this->dirMode,true);
}
if (@file_put_contents($cacheFile,LOCK_EX) !== false) {
if ($this->fileMode !== null) {
@chmod($cacheFile,$this->fileMode);
}
if ($duration <= 0) {
$duration = 31536000; // 1 year
}
return @touch($cacheFile,$duration + time());
} else {
$error = error_get_last();
Yii::warning("Unable to write cache file '{$cacheFile}': {$error['message']}",__METHOD__);
return false;
}
}
