Merge branch 'feature/1004243' into 'master'

feat： [1004243] 本书服务读者人数

See merge request rays/pcloud-common-parent!177

pcloud-common/src/main/java/com/pcloud/common/utils/cache/redis/JedisClusterUtils.java

@@ -1440,4 +1440,54 @@ public class JedisClusterUtils {
         JedisClusterUtils.jedisCluster = jedisCluster;
     }
 
+
+    /**
+     * set添加元素进去
+     *
+     * @param key
+     * @return
+     */
+    public static Long sadd(String key,  String... values) {
+        Long result = null;
+        try {
+            result = jedisCluster.sadd(key, values);
+        } catch (Exception e) {
+            LOGGER.warn("set添加元素进去:" + e.getMessage(), e);
+        }
+        return result;
+    }
+
+    /**
+     * set删除元素
+     *
+     * @param key
+     * @return
+     */
+    public static Long srem(String key,  String... values) {
+        Long result = null;
+        try {
+            result = jedisCluster.srem(key, values);
+        } catch (Exception e) {
+            LOGGER.warn("set删除元素:" + e.getMessage(), e);
+        }
+        return result;
+    }
+
+
+    /**
+     * 查看 set 的长度
+     *
+     * @param key
+     * @return
+     */
+    public static Long scard(String key) {
+        Long result = null;
+        try {
+            result = jedisCluster.scard(key);
+        } catch (Exception e) {
+            LOGGER.warn("查看 set 的长度:" + e.getMessage(), e);
+        }
+        return result;
+    }
+
 }