.net web优雅地使用 redis的方法步骤

// 安装 NuGet 包
Install-Package StackExchange.Redis

public static class RedisConnectorHelper
{
    private static Lazy<ConnectionMultiplexer> lazyConnection = new Lazy<ConnectionMultiplexer>(() =>
    {
        return ConnectionMultiplexer.Connect("your_redis_server:6379");
    });

    public static ConnectionMultiplexer Connection => lazyConnection.Value;
}

// Startup.cs
public void ConfigureServices(IServiceCollection services)
{
    services.AddStackExchangeRedisCache(options =>
    {
        options.Configuration = "your_redis_server:6379";
        options.InstanceName = "SampleInstance_";
    });
    
    // 或者直接注册 ConnectionMultiplexer
    services.AddSingleton<IConnectionMultiplexer>(_ => 
        ConnectionMultiplexer.Connect("your_redis_server:6379"));
}

public class RedisCacheService
{
    private readonly IDatabase _cache;
    
    public RedisCacheService(IConnectionMultiplexer redis)
    {
        _cache = redis.GetDatabase();
    }
    
    public async Task SetAsync<T>(string key, T value, TimeSpan? expiry = null)
    {
        var serializedValue = JsonSerializer.Serialize(value);
        await _cache.StringSetAsync(key, serializedValue, expiry);
    }
    
    public async Task<T> GetAsync<T>(string key)
    {
        var value = await _cache.StringGetAsync(key);
        return value.HasValue ? JsonSerializer.Deserialize<T>(value) : default;
    }
    
    public async Task RemoveAsync(string key)
    {
        await _cache.KeyDeleteAsync(key);
    }
}

// 使用 IDistributedCache 接口
public class SomeService
{
    private readonly IDistributedCache _cache;
    
    public SomeService(IDistributedCache cache)
    {
        _cache = cache;
    }
    
    public async Task<SomeData> GetData()
    {
        var cachedData = await _cache.GetStringAsync("cache_key");
        if (cachedData != null)
        {
            return JsonSerializer.Deserialize<SomeData>(cachedData);
        }
        
        // 从数据库获取数据
        var data = await FetchFromDatabase();
        
        // 缓存数据
        await _cache.SetStringAsync("cache_key", 
            JsonSerializer.Serialize(data),
            new DistributedCacheEntryOptions
            {
                AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(30)
            });
            
        return data;
    }
}

// 发布消息
var sub = redis.GetSubscriber();
await sub.PublishAsync("messages", "Hello World!");

// 订阅消息
var sub = redis.GetSubscriber();
await sub.SubscribeAsync("messages", (channel, message) => 
{
    Console.WriteLine((string)message);
});

var script = "return redis.call('GET', KEYS[1])";
var prepared = LuaScript.Prepare(script);
var result = await _cache.ScriptEvaluateAsync(prepared, new { KEYS = new RedisKey[] { "key" } });

var batch = _cache.CreateBatch();
var task1 = batch.StringSetAsync("key1", "value1");
var task2 = batch.StringSetAsync("key2", "value2");
batch.Execute();
await Task.WhenAll(task1, task2);

services.AddSession(options =>
{
    options.IdleTimeout = TimeSpan.FromMinutes(30);
    options.Cookie.HttpOnly = true;
    options.Cookie.IsEssential = true;
});
services.AddDistributedRedisCache(options =>
{
    options.Configuration = "your_redis_server:6379";
    options.InstanceName = "Session_";
});

services.AddResponseCaching();
services.AddDistributedRedisCache(options =>
{
    options.Configuration = "your_redis_server:6379";
    options.InstanceName = "ResponseCache_";
});

// 在控制器中使用
[ResponseCache(Duration = 60)]
public IActionResult Index()
{
    return View();
}