Redis .GetAll（）函数用于获取一个sortedset

Question

阅读有关如何进行排序集here的文档很有意思。

public void Show_a_TagCloud()
    {
        //Get strongly-typed clients
        using (var redisBlogPosts = redisClient.GetTypedClient<BlogPost>())
        {
            var newIncomingBlogPosts = redisBlogPosts.GetAll();

            foreach (var newBlogPost in newIncomingBlogPosts)
            {
                //For every tag in each new blog post, increment the number of times each Tag has occurred 
                newBlogPost.Tags.ForEach(x =>
                    redisClient.IncrementItemInSortedSet("urn:TagCloud", x, 1));
            }

            //Show top 5 most popular tags with their scores
            var tagCloud = redisClient.GetRangeWithScoresFromSortedSetDesc("urn:TagCloud", 0, 4);
            Debug.WriteLine(tagCloud.Dump());
        }
        /* Output:
        [
            [
                NoSQL,
                 4
            ],
            [
                Scalability,
                 2
            ],
            [
                JSON,
                 2
            ],
            [
                Redis,
                 1
            ],
            [
                Raven,
                 1
            ],
        ]
        */
    }

要执行诸如热门项目列表之类的任务，您必须先调用redistypedclient.GetAll（）来检索所有记录，然后使用for循环来标记流行度。我的问题是，如果您的redis数据库中有大量数据，此操作会变得昂贵且运行缓慢吗？