优化

src/main/java/com/izouma/nineth/service/CollectionService.java

@@ -278,6 +278,8 @@ public class CollectionService {
     }
 
     public BlindBoxItem draw(Long collectionId) {
+        log.info("开始盲盒抽卡 {}", collectionId);
+        long t = System.currentTimeMillis();
         List<BlindBoxItem> items = blindBoxItemRepo.findByBlindBoxId(collectionId);
 
         Map<BlindBoxItem, Range<Integer>> randomRange = new HashMap<>();
@@ -328,6 +330,7 @@ public class CollectionService {
         winItem.setStock(winItem.getStock() - 1);
         winItem.setSale(winItem.getSale() + 1);
         blindBoxItemRepo.save(winItem);
+        log.info("盲盒抽卡成功 {}ms", System.currentTimeMillis() - t);
         return winItem;
     }