delay lock until it is needed

src/router/download.rs

@@ -21,7 +21,6 @@ async fn download(
     State(state): State<AppState>,
 ) -> Result<axum::response::Response, (StatusCode, String)> {
     {
-        let mut records = state.records.lock().await;
         if headers.get("hx-request").is_some() {
             return Ok(axum::http::Response::builder()
                 .header("HX-Redirect", format!("/download/{id}"))
@@ -31,6 +30,7 @@ async fn download(
                 .into_response());
         }
 
+        let mut records = state.records.lock().await;
         if let Some(record) = records
             .get_mut(&id)
             .filter(|record| record.can_be_downloaded())