Redis C# Driver

# 以下是StackExchange.Redis的基本使用方式

  • ConnectionMultiplexer

是StackExchange.Redis中的核心类,字面意思是连接多路复用器,表示Redis服务器集群,也可以是单实例,支持同步或异步的方式进行连接,可使用配置文件,可重用并且线程安全

  • IDatabase

几乎所有StackExchange.Redis中操作Redis的方法都在IDatabase中,从ConnectionMultiplexer对象中获取

var redis = ConnectionMultiplexer.Connect("localhost");
            IDatabase db = redis.GetDatabase();

# Redis中的五种基本数据类型的操作

类型 释义
string 字符串
hash 哈希
list 列表
set 集合
zset 有序集合
  • string 字符串
var redis = ConnectionMultiplexer.Connect("localhost");

IDatabase db = redis.GetDatabase();

var value = "abcdefg";

db.StringSet("stringKey", value);

Console.WriteLine(db.StringGet("stringKey"));
  • hash 哈希
var redis = ConnectionMultiplexer.Connect("localhost");

IDatabase db = redis.GetDatabase();

// StackExchange.Redis 类库中的数据类型k-v形式
var hash = new HashEntry[]
{
    new HashEntry("1", "a"),
    new HashEntry("2", "b"),
    new HashEntry("3", "c")
};

db.HashSet("hashKey", hash);

var values = db.HashGet("hashKey", "1");

Console.WriteLine(values);
  • list 列表
var redis = ConnectionMultiplexer.Connect("localhost");

IDatabase db = redis.GetDatabase();

db.KeyDelete("listKey");

// RightPush表示在尾部插入, LeftPush表示在头部插入
db.ListRightPush("listKey", "abcdefghi".Select(x => (RedisValue)x.ToString()).ToArray());
db.ListLeftPush("listKey", "jk".Select(x => (RedisValue)x.ToString()).ToArray());

var values = db.ListRange("listKey");

for (int i = 0; i < values.Length; i++)
{
    Console.WriteLine(values[i]);
}
// 输出结果为 : kjabcdefghi
  • set 集合
var redis = ConnectionMultiplexer.Connect("localhost");

IDatabase db = redis.GetDatabase();

int totalUnfiltered = 0;
int totalFiltered = 0;

for (int i = 0; i < 1000; i++)
{
    db.SetAdd("setKey", i);
    totalUnfiltered += i;
    if (i.ToString().Contains("3"))
    {
        totalFiltered += i;
    }
}
var unfilteredActual = db.SetScan("setKey").Select(x => (int)x).Sum();

Console.WriteLine($"totalUnfiltered:{totalUnfiltered} - unfilteredActual:{unfilteredActual}");

var filteredActual = db.SetScan("setKey", "*3*").Select(x => (int)x).Sum();

Console.WriteLine($"totalFiltered:{totalFiltered} - filteredActual:{filteredActual}");
  • zset 有序集合
var redis = ConnectionMultiplexer.Connect("localhost");

IDatabase db = redis.GetDatabase();

db.SortedSetAdd("zsetKey", "a", 1);
db.SortedSetAdd("zsetKey", "b", 2);
db.SortedSetAdd("zsetKey", "c", 3);

var arr = db.SortedSetScan("zsetKey").ToArray();

Console.WriteLine(arr.Any(x => x.Element == "a" && x.Score == 1));
Console.WriteLine(arr.Any(x => x.Element == "b" && x.Score == 2));
Console.WriteLine(arr.Any(x => x.Element == "c" && x.Score == 3));
上次更新: 2019年 12月 28日 15:53:50