Add println

src/http_server.rs

@@ -69,6 +69,7 @@ async fn add_rating(
 }
 
 async fn cache_rating_only(Path(rating): Path<i64>, State(shared): State<SharedState>) -> Response {
+    eprintln!("Received rating: {rating}");
     shared.rating.store(rating, Ordering::Relaxed);
     (StatusCode::OK, "Done.").into_response()
 }