环境准备
Redis集群(Windows集群搭建)
启动Redis集群,给每个节点加上Title
start "Redis - 6379" /min redis-server.exe redis.6379.conf
start "Redis - 6380" /min redis-server.exe redis.6380.conf
start "Redis - 6381" /min redis-server.exe redis.6381.conf
start "Redis - 6382" /min redis-server.exe redis.6382.conf
start "Redis - 6383" /min redis-server.exe redis.6383.conf
start "Redis - 6384" /min redis-server.exe redis.6384.conf
安装StackExchange.Redis包
dotnet add package StackExchange.Redis
连接Redis
var configString = "127.0.0.1:6379";
var options = ConfigurationOptions.Parse(configString);
options.ReconnectRetryPolicy = new ExponentialRetry(5000);
var client = ConnectionMultiplexer.Connect(options);
这里只需要提供一个节点就能访问整个集群
ConnectionMultiplexer 连接Redis可以使用ConfigurationOptions,或者直接字符串初始化(里面实现也是调用ConfigurationOptions.Parse转换)
这里要说一下是他的重连重试机制,在第一次创建连接的时候,StackExchange.Redis会创建一个心跳检测
internal static IDisposable Create(ConnectionMultiplexer connection)
{
var token = new TimerToken(connection);
var timer = new Timer(Heartbeat, token, MillisecondsPerHeartbeat, MillisecondsPerHeartbeat);
token.SetTimer(timer);
return timer;
}
使用System.Threading.Timer每秒钟检查一次。
StackExchange.Redis 实现两种重试策略,当然我们也可以实现自己的重现策略,实现IReconnectRetryPolicy接口
- ExponentialRetry(指数)
根据指定时间,根据重试次数不断增大随机数范围
- LinearRetry(线性)
根据指定时间固定时间间隔重试
常用数据结构操作
字符串(String)操作
static void RedisStringOperation(ConnectionMultiplexer client)
{
var db = client.GetDatabase();
//单个Key操作
db.StringSet("Key", "Wilson");
Console.WriteLine($"Get Key : {db.StringGet("Key")}");
db.StringSet("Nums", 1);
db.StringIncrement("Nums");
Console.WriteLine($"Get Nums : {db.StringGet("Nums")}");
db.StringDecrement("Nums");
Console.WriteLine($"Get Nums : {db.StringGet("Nums")}");
//多个Key操作
db.StringSet(new KeyValuePair[]
{
new KeyValuePair("{user}Name","Wilson"),
new KeyValuePair("{user}Age",30)
});
foreach (var value in db.StringGet(new RedisKey[] { "{user}Name", "{user}Age" }))
{
Console.WriteLine($"{value}");
}
}
哈希(Hash)操作
static void RedisHashOperation(ConnectionMultiplexer client)
{
var db = client.GetDatabase();
db.HashSet("person", "name", "Wilson");
Console.WriteLine(db.HashGet("person", "name"));
db.HashSet("person", new HashEntry[]
{
new HashEntry("name","Wilson"),
new HashEntry("sex",1)
});
Console.WriteLine(string.Join("
", db.HashGet("person", new RedisValue[] { "name", "sex" })));
Console.WriteLine(string.Join("
", db.HashGetAll("person")));
}
列表(List) 操作
static void RedisListOperation(ConnectionMultiplexer client)
{
var db = client.GetDatabase();
db.ListLeftPush("list", 100);
db.ListLeftPush("list", 200);
db.ListLeftPush("list", 300);
db.ListRightPush("list", 400);
db.ListRightPush("list", 500);
Console.WriteLine(db.ListLeftPop("list"));
Console.WriteLine(db.ListRightPop("list"));
Console.WriteLine(string.Join(" ", db.ListRange("list", 0, 2)));
Console.WriteLine(db.ListLength("list"));
}
集合(Set)
static void RedisSetOperation(ConnectionMultiplexer client)
{
var db = client.GetDatabase();
db.SetAdd("user", "Wilson");
db.SetAdd("user", "Wilson");
db.SetAdd("user", "Alice");
Console.WriteLine(db.SetLength("user"));
Console.WriteLine(db.SetPop("user"));
Console.WriteLine(string.Join("
", db.SetMembers("user")));
}
有序集合(Sorted Set)
static void RedisSortedSetOperation(ConnectionMultiplexer client)
{
var db = client.GetDatabase();
db.KeyDelete("user");
db.SortedSetAdd("user", "Wilson", 90);
db.SortedSetAdd("user", "Alice", 85);
db.SortedSetAdd("user", "Trenary", 12);
db.SortedSetAdd("user", "Nixon", 30);
Console.WriteLine(db.SortedSetLength("user"));
Console.WriteLine(db.SortedSetRemove("user", "Wilson"));
Console.WriteLine(string.Join("
", db.SortedSetRangeByRank("user", 0, 2)));
}
转发请标明出处:https://www.cnblogs.com/WilsonPan/p/12677478.html
示例代码: https://github.com/WilsonPan/Net.Demos/tree/master/Demo.RedisCluster
参考文章
StackExchange.Redis | General purpose redis client