diff --git a/composer.json b/composer.json
index ad99240..c08cdb4 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,9 @@
     "gemorroj/archive7z": "^5.7",
     "npm-asset/viewerjs": "^1.11",
     "npm-asset/plyr": "^3.7",
-    "ext-fileinfo": "*"
+    "ext-fileinfo": "*",
+    "npm-asset/ace-builds": "^1.32",
+    "yiisoft/yii2-redis": "^2.0"
   },
   "require-dev": {
     "yiisoft/yii2-debug": "~2.1.0",
diff --git a/config/web.php b/config/web.php
index 60f5d88..51cf99e 100644
--- a/config/web.php
+++ b/config/web.php
@@ -18,8 +18,11 @@ $config = [
             // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
             'cookieValidationKey' => '9vuTNyfQqTOWY8fhAajrAhOfX_uaZqZZ',
         ],
+//        'cache' => [
+//            'class' => 'yii\caching\FileCache',
+//        ],
         'cache' => [
-            'class' => 'yii\caching\FileCache',
+            'class' => 'yii\redis\Cache',
         ],
         'user' => [
             'identityClass' => 'app\models\User',
@@ -44,6 +47,15 @@ $config = [
                 ],
             ],
         ],
+        'session' => [
+            'class' => 'yii\redis\Session',
+        ],
+        'redis' => [
+            'class' => 'yii\redis\Connection',
+            'hostname' => 'localhost',
+            'port' => 6379,
+            'database' => 0,
+        ],
         'db' => $db,
         /*
         'urlManager' => [