Merge branch 'feature/1004273' into 'master'

feat:[1004273] 本书服务页浏览时长、留存率

See merge request rays/pcloud-common-parent!180

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

@@ -1490,4 +1490,19 @@ public class JedisClusterUtils {
         return result;
     }
 
+    /**
+     * 查看 set 中所有的元素
+     *
+     * @param key
+     * @return
+     */
+    public static Set<String> smembers(String key) {
+        Set<String> result = null;
+        try {
+            result = jedisCluster.smembers(key);
+        } catch (Exception e) {
+            LOGGER.warn("查看 set 中所有的元素:" + e.getMessage(), e);
+        }
+        return result;
+    }
 }