Cache-control headers for all requests

nginx.conf

@@ -6,6 +6,14 @@ http {
     include mime.types;
     sendfile on;
 
+    map $sent_http_content_type $cacheable_types {
+        "text/html"                 "max-age=86400"; # 1 day
+        "application/javascript"    "max-age=31536000"; # 1 year
+        "text/css"                  "max-age=31536000";
+        "image/jpeg"                "max-age=31536000";
+        default                     "max-age=2592000"; # 30 days
+    }
+
     server {
         listen 80;
         listen [::]:80;
@@ -17,5 +25,9 @@ http {
 
         root /app/;
         gzip_static on;
+
+        location / {
+            add_header "Cache-Control" $cacheable_types;
+        }
     }
 }