.net operation redis sorted set ordered set

One 、sorted set An overview of ordered sets

Redis An ordered set is the same as a set string Collection of type elements , And duplicate members are not allowed .

The difference is that each element is associated with a double Score of type .redis It's the scores that sort the members of a collection from small to large .

Members of an ordered set are unique , But fractions (score) But it can be repeated .

Collections are implemented through hash tables , So add the , Delete , The complexity of searching is O(1). The maximum number of members in the collection is 232 - 1 (4294967295, Each collection can store 40 More than 100 million members ).

Two 、 Use scenarios

Use scenarios , Do service registration at discovery , Luck draw , Current limiting , Rankings, etc

3、 ... and 、.NET operation

1、 Basic operation

 string zsett_key = "kgxk_zset";
                // Add one kye  If there is the same value , Will be replaced （ Cover ） go in , Will not be retained because of scores 
                client.AddItemToSortedSet(zsett_key, "cc", 33);
                client.AddItemToSortedSet(zsett_key, "cc", 44);
                client.AddItemToSortedSet(zsett_key, "cc", 22);
                Console.WriteLine("ok");
                // Get current value Result 
                Console.WriteLine(client.GetItemIndexInSortedSet(zsett_key, "cc"));
                // Batch operation multiple key , For more than one key  assignment 1
                client.AddRangeToSortedSet(zsett_key, new List<string>() { "a", "b" }, 1);

                foreach (var item in client.GetAllItemsFromSortedSet(zsett_key))
                {
                    Console.WriteLine(item);
                }

2、 Get the value according to the subscript range

client.AddItemToSortedSet(" Shu Kingdom ", " Liu bei ", 5);
                client.AddItemToSortedSet(" Shu Kingdom ", " Guan yu ", 2);
                client.AddItemToSortedSet(" Shu Kingdom ", " Zhang Fei ", 3);
                client.AddItemToSortedSet(" State of Wei ", " Liu bei ", 5);
                client.AddItemToSortedSet(" State of Wei ", " Guan yu ", 2);
                client.AddItemToSortedSet(" Shu Kingdom ", " Zhang Fei ", 3);
                // obtain  key It is the subscript of Shu 0, To 2
                IDictionary<String, double> Dic = client.GetRangeWithScoresFromSortedSet(" Shu Kingdom ", 0, 2);
				foreach (var r in Dic)
				{
					Console.WriteLine(r.Key + ":" + r.Value);
				}

var DicString = client.StoreIntersectFromSortedSets("2", " Shu Kingdom ", " State of Wei ");

var ss = client.GetAllItemsFromSortedSet("2");