--- a/contrib/provision/roles/tram-im/templates/etc/nginx/sites-available/tram-im	Mon Apr 04 20:33:43 2016 +0800
+++ b/contrib/provision/roles/tram-im/templates/etc/nginx/sites-available/tram-im	Mon Apr 04 20:35:49 2016 +0800
@@ -50,6 +50,9 @@
 
     location / {
         expires max;
+        gzip on;
+        gzip_types text/css application/javascript application/x-javascript text/javascript;
+        gzip_vary on;
     }
 
     location /http-bind {