diff --git a/index.php b/index.php
index bd59951..dd124de 100644
--- a/index.php
+++ b/index.php
@@ -1,17 +1,27 @@
 <?php
 error_reporting(0);
 $file_path = "data/images.json";
-if(file_exists($file_path)){
-    $fp = fopen($file_path,"r");
-    $str = fread($fp,filesize($file_path));
-    $res = json_decode($str,true);
-    $randNum = rand(0,sizeof($res)-1);
-    $url = $res[$randNum]['url'];
-    $name = $res[$randNum]['name'];
-    if($_GET['return'] == 'json'){
-        $arr = ['code' => 0,'url' => $url,'name' => $name];
-        echo json_encode($arr);
-    } else {
-        header('Location:'.$url);
-    }
+$memcache = new Memcache; 
+$memcache->connect('127.0.0.1', 11211) or die ("Could not connect");
+$json = $memcache->get('randUrlJson');
+// echo "获取缓存";
+if(trim($json) == "" || $json == false){
+	if(file_exists($file_path)){
+		$fp = fopen($file_path,"r");
+		$str = fread($fp,filesize($file_path));
+		$memcache->set('randUrlJson', $str);
+		$json = $str;
+		// echo "设置缓存";
+	}
+}
+$res = json_decode($json,true);
+$randNum = rand(0,sizeof($res)-1);
+$url = $res[$randNum]['url'];
+$name = $res[$randNum]['name'];
+if($_GET['return'] == 'json'){
+	$arr = ['code' => 0,'url' => $url,'name' => $name];
+	echo json_encode($arr);
+} else {
+	// echo $url;
+	header('Location:'.$url);
 }
\ No newline at end of file