项目创建
为了测试方便,使用控制台应用程序即可。
这里创建.NET Core 3.1(长期支持)
可以看到,非常干净
StackExchange.Redis操作示例
打开NuGet包管理器,搜索【StackExchange.Redis】,本示例使用的是2.6.66版本
引包【using StackExchange.Redis;】
ConnectionMultiplexer
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { ConnectionMultiplexer conn = ConnectionMultiplexer.Connect("127.0.0.1:6379"); IDatabase db = conn.GetDatabase(); db.StringSet("userName","admin"); RedisValue redisValue = db.StringGet("userName"); Console.WriteLine(redisValue); } } }
输出结果,可以看到admin是咱们拿到的值。
RedisDBHelper
using StackExchange.Redis; using System; using System.Collections.Generic; using System.Text; namespace demo_20221010_redis { class RedisDBHelper { private ConnectionMultiplexer redis { get; set; } public IDatabase db { get; set; } /// <summary> /// 其实有个链接就行,一般都是默认本地。如果不是就再传 /// </summary> /// <param name="connection"></param> public RedisDBHelper(string connection) { redis = ConnectionMultiplexer.Connect(connection); db = redis.GetDatabase(); } } }
使用RedisDBHelper测试
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); bool isf = redis.db.StringSet("userName","admin"); if (isf) { RedisValue redisValue = redis.db.StringGet("userName"); Console.WriteLine(redisValue.ToString()); } else { Console.WriteLine("写入失败"); } } } }
有存储时间的String
这里输入的时间必须是TimeSpan类型。故而使用TimeSpan.FromSeconds(double);来输入时间。
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); bool isf = redis.db.StringSet("haveTime","我是存储时间",TimeSpan.FromSeconds(120)); if (isf) { Console.WriteLine("存储值:"+redis.db.StringGet("haveTime").ToString()) ; Console.WriteLine("剩余时间:"+redis.db.KeyTimeToLive("haveTime")); } } } }
Redis删除Key:KeyDelete
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); bool isf = redis.db.StringSet("haveTime","我是存储时间",TimeSpan.FromSeconds(120)); if (isf) { //删除后再查询,肯定是空 redis.db.KeyDelete("havaTime"); Console.WriteLine("是否有值:"+redis.db.StringGet("havaTime")); } } } }
没有值就是正确的,这个删除可以删除任何的可以,都是通用的。
Redis的List操作
向左添加,其中ListRange是读取。
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("mylist"); RedisValue[] arr = new RedisValue[10]; for (int i = 0; i < arr.Length; i++) { arr[i]= new RedisValue("正确"+i); } long isf = redis.db.ListLeftPush("mylist",arr); RedisValue[] list = redis.db.ListRange("mylist"); foreach (var item in list) { Console.WriteLine(item); } } } }
向右添加
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("mylist"); RedisValue[] arr = new RedisValue[10]; for (int i = 0; i < arr.Length; i++) { arr[i]= new RedisValue("正确"+i); } long isf = redis.db.ListRightPush("mylist",arr); RedisValue[] list = redis.db.ListRange("mylist"); foreach (var item in list) { Console.WriteLine(item); } } } }
redis list范围查询
一般的时候list存储的值都是成千上万的,甚至几十上百万,所以我们需要好好处理一下。一般的情况下也就获取最后一千条左右的数据,如果都返回去了不就能让别人推算出后面的大致数据走向了吗?
这里我专门匹配的写了RedisValue,其实写字符串数组也行的。
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("mylist"); RedisValue[] arr = new RedisValue[10]; for (int i = 0; i < arr.Length; i++) { arr[i] = new RedisValue("正确" + i); } long isf = redis.db.ListRightPush("mylist", arr); RedisValue[] list = redis.db.ListRange("mylist",0,5); foreach (var item in list) { Console.WriteLine(item); } } } }
redis HashSet操作
如果替换file的话直接写名字替换值即可。
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("myHashSet"); redis.db.HashSet("myHashSet","id","9527"); redis.db.HashSet("myHashSet","userName","admin"); redis.db.HashSet("myHashSet","sex","男"); redis.db.HashSet("myHashSet","age","22"); redis.db.HashDelete("myHashSet","sex"); HashEntry[] hashEntries = redis.db.HashGetAll("myHashSet"); foreach (var item in hashEntries) { Console.WriteLine(item); } } } }
redis Set操作
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("mySet"); redis.db.SetAdd("mySet","a1"); redis.db.SetAdd("mySet","a2"); redis.db.SetAdd("mySet","a3"); redis.db.SetAdd("mySet","a4"); redis.db.SetAdd("mySet","a5"); RedisValue[] redisValues = redis.db.SetMembers("mySet"); foreach (var item in redisValues) { Console.WriteLine(item); } } } }
获取Set长度
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("mySet"); redis.db.KeyDelete("mySet1"); redis.db.SetAdd("mySet","a1"); redis.db.SetAdd("mySet","a2"); redis.db.SetAdd("mySet","a3"); redis.db.SetAdd("mySet","a4"); redis.db.SetAdd("mySet","a5"); redis.db.SetAdd("mySet1","a1"); redis.db.SetAdd("mySet1","a2"); redis.db.SetAdd("mySet1","a6"); redis.db.SetAdd("mySet1","a7"); long v1 = redis.db.SetLength("mySet"); long v2 = redis.db.SetLength("mySet1"); Console.WriteLine("v1:"+v1); Console.WriteLine("v2:"+v2); } } }
Set查询交集
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("mySet"); redis.db.KeyDelete("mySet1"); redis.db.SetAdd("mySet","a1"); redis.db.SetAdd("mySet","a2"); redis.db.SetAdd("mySet","a3"); redis.db.SetAdd("mySet","a4"); redis.db.SetAdd("mySet","a5"); redis.db.SetAdd("mySet1","a1"); redis.db.SetAdd("mySet1","a2"); redis.db.SetAdd("mySet1","a6"); redis.db.SetAdd("mySet1","a7"); RedisValue[] redisValues = redis.db.SetCombine(SetOperation.Intersect, "mySet", "mySet1"); foreach (var item in redisValues) { Console.WriteLine(item); } } } }
Set查询差集
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("mySet"); redis.db.KeyDelete("mySet1"); redis.db.SetAdd("mySet","a1"); redis.db.SetAdd("mySet","a2"); redis.db.SetAdd("mySet","a3"); redis.db.SetAdd("mySet","a4"); redis.db.SetAdd("mySet","a5"); redis.db.SetAdd("mySet1","a1"); redis.db.SetAdd("mySet1","a2"); redis.db.SetAdd("mySet1","a6"); redis.db.SetAdd("mySet1","a7"); RedisValue[] redisValues = redis.db.SetCombine(SetOperation.Difference, "mySet", "mySet1"); foreach (var item in redisValues) { Console.WriteLine(item); } } } }
Set查询并集
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("mySet"); redis.db.KeyDelete("mySet1"); redis.db.SetAdd("mySet","a1"); redis.db.SetAdd("mySet","a2"); redis.db.SetAdd("mySet","a3"); redis.db.SetAdd("mySet","a4"); redis.db.SetAdd("mySet","a5"); redis.db.SetAdd("mySet1","a1"); redis.db.SetAdd("mySet1","a2"); redis.db.SetAdd("mySet1","a6"); redis.db.SetAdd("mySet1","a7"); RedisValue[] redisValues = redis.db.SetCombine(SetOperation.Union, "mySet", "mySet1"); foreach (var item in redisValues) { Console.WriteLine(item); } } } }
Redis ZSET
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("myZset"); redis.db.SortedSetAdd("myZset","a1",69); redis.db.SortedSetAdd("myZset","a2",79); redis.db.SortedSetAdd("myZset","a3",85); redis.db.SortedSetAdd("myZset","a4",82); redis.db.SortedSetAdd("myZset","a5",92); //分数范围 RedisValue[] redisValues = redis.db.SortedSetRangeByScore("myZset", 70, 90); foreach (var item in redisValues) { Console.WriteLine(item); } } } }
正序
Plain Text
自动换行
xxxxxxxxxx
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using StackExchange.Redis;
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using System;
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namespace demo_20221010_redis
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{
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class Program
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{
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static void Main(string[] args)
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{
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RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379");
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redis.db.KeyDelete("myZset");
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redis.db.SortedSetAdd("myZset","a1",69);
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redis.db.SortedSetAdd("myZset","a2",79);
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redis.db.SortedSetAdd("myZset","a3",85);
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redis.db.SortedSetAdd("myZset","a4",82);
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redis.db.SortedSetAdd("myZset","a5",92);
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//正序
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SortedSetEntry[] sortedSetEntries = redis.db.SortedSetRangeByRankWithScores("myZset",0,-1,Order.Ascending);
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foreach (var item in sortedSetEntries)
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{
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Console.WriteLine(item);
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}
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}
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}
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}
倒序
using StackExchange.Redis; using System; namespace demo_20221010_redis { class Program { static void Main(string[] args) { RedisDBHelper redis = new RedisDBHelper("127.0.0.1:6379"); redis.db.KeyDelete("myZset"); redis.db.SortedSetAdd("myZset","a1",69); redis.db.SortedSetAdd("myZset","a2",79); redis.db.SortedSetAdd("myZset","a3",85); redis.db.SortedSetAdd("myZset","a4",82); redis.db.SortedSetAdd("myZset","a5",92); //正序 SortedSetEntry[] sortedSetEntries = redis.db.SortedSetRangeByRankWithScores("myZset",0,-1,Order.Descending); foreach (var item in sortedSetEntries) { Console.WriteLine(item); } } } }