use collection.load(rx) for writer task

src/main.rs

@@ -102,13 +102,9 @@ fn db_writer_task(rx: mpsc::Receiver<Question>) {
     let storage = Storage::new(DB_DIR, options).unwrap();
     let collection = storage.collection("questions").unwrap();
 
-    let mut count: usize = 0;
-    rx.into_iter().for_each(|question| {
-        collection.insert(question).expect("insert question");
-        count += 1;
-    });
+    let count = collection.load(rx).expect("load");
 
-    println!("inserted {count}");
+    println!("loaded {count}");
 
     println!("syncing to disk...");
     storage.sync(true).unwrap();