优化获取用户的名称的方法

--RedisKeys.java 设一个新key
--SysUserUtilServiceImpl.java 优化赋值用户名的方法，把用户名暂存在redis。获取相同的不需要频繁去数据库查找

main/manager-api/src/main/java/xiaozhi/common/redis/RedisKeys.java

@@ -26,4 +26,13 @@ public class RedisKeys {
     public static String getDeviceCaptchaKey(String captcha) {
         return "sys:device:captcha:" + captcha;
     }
+
+    /**
+     * 用户id的Key
+     */
+    public static String getUserIdKey(Long userid) {
+        return "sys:username:id:" + userid;
+    }
+
+
 }

main/manager-api/src/main/java/xiaozhi/modules/sys/service/impl/SysUserUtilServiceImpl.java

@@ -2,6 +2,7 @@ package xiaozhi.modules.sys.service.impl;
 
 import lombok.AllArgsConstructor;
 import org.springframework.stereotype.Service;
+import xiaozhi.common.redis.RedisKeys;
 import xiaozhi.common.redis.RedisUtils;
 import xiaozhi.common.service.impl.BaseServiceImpl;
 import xiaozhi.modules.sys.dao.SysUserDao;
@@ -18,9 +19,17 @@ public class SysUserUtilServiceImpl extends BaseServiceImpl<SysUserDao, SysUserE
 
     @Override
     public void assignUsername(Long userId, Consumer<String> setter) {
-        SysUserEntity entity = baseDao.selectById(userId);
-        if (entity != null) {
-            setter.accept(entity.getUsername());
+        String userIdKey = RedisKeys.getUserIdKey(userId);
+        String username = redisUtils.get(userIdKey).toString();
+        if(username != null){
+            setter.accept(username);
+        }else {
+            SysUserEntity entity = baseDao.selectById(userId);
+            if (entity != null) {
+                username = entity.getUsername();
+                redisUtils.set(userIdKey,username,10);
+                setter.accept(username);
+            }
         }
     }
 }