.Net Core下 Redis的String Hash List Set和Sorted Set的例子

1.新建一个.Net Core控制台应用程序，用Nuget导入驱动

打开程序包管理控制台，

执行以下代码。

PM> Install-Package ServiceStack.Redis

即可添加Redis的引用。

2.StringDemo

String类型是最常用的数据类型，在Redis中以KKey/Value存储。

using System;
using System.Collections.Generic;
using System.Text;
using ServiceStack.Redis;
using ServiceStack.Text;

namespace RedisDotNetDemo
{
    class StringDemo
    {
        public static void Start()
        {
            var redisMangement = new RedisManagerPool("127.0.0.1:6379");
            var client = redisMangement.GetClient();

            client.Set<int>("pwd", 111);                       //普通字符串
            int pwd = client.Get<int>("pwd");
            Console.WriteLine(pwd);
            var todoTools = client.As<Todo>();
            Todo todo=new Todo(){Content = "123",Id =todoTools.GetNextSequence(),Order = 1};
            client.Set<Todo>("todo", todo);                    //object
            Todo getTodo = client.Get<Todo>("todo");
            Console.WriteLine(getTodo.Content);

            List<Todo> list=new List<Todo>(){new Todo(){Content = "123"},new Todo(){Content = "234"}};      //List<Object>

            client.Set("list", list);
            List<Todo> getList = client.Get<List<Todo>>("list");

            foreach (var VARIABLE in getList)
            {
                Console.WriteLine(VARIABLE.Content);
            }
            Console.ReadLine();
        }
    }
    class Todo
    {
        public long Id { get; set; }
        public string Content { get; set; }
        public int Order { get; set; }
        public bool Done { get; set; }
    }
}

3.HashDemo

如何,Hash在Redis采用 (HashId,Key，Value)进行存储

一个HashId 可以包含多个key，一个key对应着一个value

using System;
using System.Collections.Generic;
using System.Text;
using ServiceStack.Redis;

namespace RedisDotNetDemo
{
    class HashDemo
    {
        public static void Start()
        {
            var redisMangement = new RedisManagerPool("127.0.0.1:6379");
            var client = redisMangement.GetClient();
            client.SetEntryInHash("test", "123", "aaaaa");                       //存储一次数据  test是hashid，123是key，aaaa是value
            List<string> listKeys = client.GetHashKeys("test");                  //获取test哈希下的所有key
            Console.WriteLine("keys in test");
            foreach (var VARIABLE in listKeys)
            {
                Console.WriteLine(VARIABLE);
            }
            List<string> listValue = client.GetHashValues("test");             //获取test哈希下的所有值
            Console.WriteLine("test 里的所有值");
            foreach (var VARIABLE in listValue)
            {
                Console.WriteLine(VARIABLE);
            }
            string value = client.GetValueFromHash("test", listKeys[0]);      //获取test哈希下，第一个Key对应的值
            Console.WriteLine("test 下的key"+listKeys[0]+"对应的值"+value);

        }
    }
}

4.ListDemo

list是一个链表结构，key可以理解为链表的名字，然后往这个名字所对应的链表里加值。，list可以以队/栈的形式进行工作。

using System;
using System.Collections.Generic;
using System.Text;
using ServiceStack.Redis;

namespace RedisDotNetDemo
{
    class ListDemo
    {   
        public static void Start()
        {
            var redisMangement = new RedisManagerPool("127.0.0.1:6379");
            var client = redisMangement.GetClient();

            //队列的使用   //先进先出
            client.EnqueueItemOnList("name","zhangsan");   //入列
            client.EnqueueItemOnList("name","lisi");       //入列
            long count = client.GetListCount("name");
            for (int i = 0; i < count; i++)
            {
                Console.WriteLine(client.DequeueItemFromList("name"));   //出列
            }


            //栈的使用 //先进后出
            client.PushItemToList("name2","wangwu");          //推入
            client.PushItemToList("name2","maliu");           //推入
            long count2 = client.GetListCount("name2");
            for (int i = 0; i < count2; i++)
            {
                Console.WriteLine(client.PopItemFromList("name2"));   //弹出
            }
        }
    }
}

5 SetDemo

它是string类型的无序集合。set是通过hash table实现的，添加，删除和查找,对集合我们可以取并集，交集，差集.

using System;
using System.Collections.Generic;
using System.Text;
using ServiceStack.Redis;

namespace RedisDotNetDemo
{
    class SetDemo
    {//它是string类型的无序集合。set是通过hash table实现的，添加，删除和查找,对集合我们可以取并集，交集，差集.
        public static void Start()
        {
            var redisMangement = new RedisManagerPool("127.0.0.1:6379");
            var client = redisMangement.GetClient();
            //对Set类型进行操作

            client.AddItemToSet("a3", "ddd");
            client.AddItemToSet("a3", "ccc");
            client.AddItemToSet("a3", "tttt");
            client.AddItemToSet("a3", "sssh");
            client.AddItemToSet("a3", "hhhh");

            HashSet<string> hashSet = client.GetAllItemsFromSet("a3");
            foreach (var VARIABLE in hashSet)
            {
                Console.WriteLine(VARIABLE);
            }

            //求并集
            client.AddItemToSet("a4", "hhhh");
            client.AddItemToSet("a4", "h777");
            HashSet<string> hashSetUnion = client.GetUnionFromSets(new string[] {"a3", "a4"});
            Console.WriteLine("并集");
            foreach (var VARIABLE in hashSetUnion)
            {
                Console.WriteLine(VARIABLE);
            }

            //求交集
            HashSet<string> hashsetInter = client.GetIntersectFromSets(new string[] { "a3","a4" });
            Console.WriteLine("交集");
            foreach (var VARIABLE in hashsetInter)
            {
                Console.WriteLine(VARIABLE);
            }
            //求差集
            HashSet<string> hashsetDifference = client.GetDifferencesFromSet("a3", new string[] { "a4" });
            Console.WriteLine("差集");
            foreach (var VARIABLE in hashsetDifference)
            {
                Console.WriteLine(VARIABLE);
            }
        }
    }
}

6.SortedSetDemo

SortedSet我只知道它相较于Set,它是有序的，而Set是无需的，而且用户还可以调整SortedSet中value的位置，至于具体怎么在.Net环境下调整，暂时没有学会，就不在此班门弄斧，给出一个SortedDemo的存和取得例子。

using System;
using System.Collections.Generic;
using System.Text;
using ServiceStack.Redis;

namespace RedisDotNetDemo
{
    //区别是set不是自动有序的，而sorted set可以通过用户额外提供一个优先级(score)的参数来为成员排序，并且是插入有序的，即自动排序。
    //当你需要一个有序的并且不重复的集合列表，那么可以选择sorted set数据结构， 
    class SortedSetDemo
    {
        public static void Start()
        {
            var redisMangement = new RedisManagerPool("127.0.0.1:6379");
            var client = redisMangement.GetClient();
            client.AddItemToSortedSet("a5", "ffff");
            client.AddItemToSortedSet("a5", "bbbb");
            client.AddItemToSortedSet("a5", "gggg");
            client.AddItemToSortedSet("a5", "cccc");
            client.AddItemToSortedSet("a5", "waaa");
            System.Collections.Generic.List<string> list = client.GetAllItemsFromSortedSet("a5");
            foreach (string str in list)
            {
                Console.WriteLine(str);
            }
        }
    }
}

以上是我对Redis中几种数据类型得用法得总结，如有不对得地方，欢迎大家批评指正。

GitHub代码地址：https://github.com/liuzhenyulive/RedisDotNetDemo