diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/util/RedisUtils.java b/src/main/java/com/chaozhanggui/system/cashierservice/util/RedisUtils.java
index 91de6c3..21d2563 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/util/RedisUtils.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/util/RedisUtils.java
@@ -5,10 +5,7 @@ import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.stereotype.Component;
 import org.springframework.util.CollectionUtils;
 
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.concurrent.TimeUnit;
 
 @Component
@@ -583,4 +580,15 @@ public class RedisUtils {
         }
     }
 
+    public boolean lock(String key, long timeout, TimeUnit timeUnit) {
+        String value = UUID.randomUUID().toString();
+        Boolean success = redisTemplate.opsForValue().setIfAbsent(key, value, timeout, timeUnit);
+        return success != null && success;
+    }
+
+
+    public void releaseLock(String key) {
+        redisTemplate.delete(key);
+    }
+
 }
\ No newline at end of file