diff --git a/flaschengeist/models/__init__.py b/flaschengeist/models/__init__.py
index 1b503dd..4eca8e3 100644
--- a/flaschengeist/models/__init__.py
+++ b/flaschengeist/models/__init__.py
@@ -44,6 +44,7 @@ class ModelSerializeMixin:
 class Serial(TypeDecorator):
     """Same as MariaDB Serial used for IDs"""
 
+    cache_ok=True
     impl = BigInteger().with_variant(mysql.BIGINT(unsigned=True), "mysql").with_variant(sqlite.INTEGER, "sqlite")
 
 
diff --git a/flaschengeist/plugins/events/event_controller.py b/flaschengeist/plugins/events/event_controller.py
index 1bc8b43..fb50655 100644
--- a/flaschengeist/plugins/events/event_controller.py
+++ b/flaschengeist/plugins/events/event_controller.py
@@ -1,7 +1,7 @@
 from datetime import datetime, timedelta, timezone
 from typing import Optional
 
-from werkzeug.exceptions import BadRequest, NotFound
+from werkzeug.exceptions import BadRequest, Conflict, NotFound
 from sqlalchemy.exc import IntegrityError
 
 from flaschengeist import logger
@@ -41,7 +41,7 @@ def create_event_type(name):
         db.session.commit()
         return event
     except IntegrityError:
-        raise BadRequest("Name already exists")
+        raise Conflict("Name already exists")
 
 
 def rename_event_type(identifier, new_name):
@@ -50,7 +50,7 @@ def rename_event_type(identifier, new_name):
     try:
         db.session.commit()
     except IntegrityError:
-        raise BadRequest("Name already exists")
+        raise Conflict("Name already exists")
 
 
 def delete_event_type(name):
diff --git a/flaschengeist/plugins/users/__init__.py b/flaschengeist/plugins/users/__init__.py
index 8a0db58..9b41070 100644
--- a/flaschengeist/plugins/users/__init__.py
+++ b/flaschengeist/plugins/users/__init__.py
@@ -75,7 +75,7 @@ def list_users(current_session):
 
 @UsersPlugin.blueprint.route("/users/<userid>", methods=["GET"])
 @login_required()
-@headers({"Cache-Control": "private, must-revalidate, max-age=3600"})
+@headers({"Cache-Control": "private, must-revalidate, max-age=300"})
 def get_user(userid, current_session):
     """Retrieve user by userid
 
diff --git a/readme.md b/readme.md
index 133a570..7b64951 100644
--- a/readme.md
+++ b/readme.md
@@ -46,7 +46,7 @@ If not you need to create user and database manually do (or similar on Windows):
     (
         echo "CREATE DATABASE flaschengeist;"
         echo "CREATE USER 'flaschengeist'@'localhost' IDENTIFIED BY 'flaschengeist';"
-        echo "GRANT ALL PRIVILEGES ON 'flaschengeist'.* TO 'flaschengeist'@'localhost';"
+        echo "GRANT ALL PRIVILEGES ON flaschengeist.* TO 'flaschengeist'@'localhost';"
         echo "FLUSH PRIVILEGES;"
     ) | sudo mysql