 <p>I assume redirect to <code>/</code> is handled by <code>BlogFront</code> handler. Seems you're hitting datastore eventual consistency. </p> <p><a href="http://stackoverflow.com/questions/27633835/google-app-engine-datastore-dealing-with-eventual-consistency">Google App Engine Datastore: Dealing with eventual consistency</a></p> <p><a href="http://stackoverflow.com/questions/15261099/gae-how-long-to-wait-for-eventual-consistency">GAE: How long to wait for eventual consistency?</a></p>