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Date: Wed, 10 Jul 2024 16:09:44 +0800
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+# 使用微软 Garnet 分布式缓存
+
+## 什么是 Garnet 分布式缓存
+
+Garnet 是微软开源的分布式缓存系统，它是一个高性能、低延迟的分布式缓存系统，支持多种数据结构，如字符串、列表、哈希表、集合等，Garnet 的设计目标是提供一个高性能、低延迟的分布式缓存系统，以支持大规模的数据存储和访问，同时提供高可用性和可扩展性。
+
+Garnet 采用流行的 RESP 协议，使用 C# 编写，支持 Redis 的大部分命令，同时提供了更多的功能，如集群搭建、数据持久化、数据复制、数据分片等，在 C# 中的可以使用 StackExchange.Redis 开源库对缓存进行操作。
+
+https://microsoft.github.io/garnet/docs
+
+## 部署 Garnet 分布式缓存
+
+## 在 .NET 程序中自托管
+
+```shell
+dotnet add package Microsoft.Garnet
+```
+
+```csharp
+using Garnet;
+
+try
+{
+    using var server = new GarnetServer(args);
+    server.Start();
+    Thread.Sleep(Timeout.Infinite);
+}
+catch (Exception ex)
+{
+    Console.WriteLine($"Unable to initialize server due to exception: {ex.Message}");
+}
+```
+
+##  在 Docker 中运行
+
+### 使用 Redis 缓存
+
+```shell
+docker run --name my-redis -d -p 6379:6379 -e REDIS_PASSWORD=guest redis
+```
+
+### 使用 Garnet 缓存
+
+```shell
+docker run --name garnet -d -p 6379:6379 --ulimit memlock=-1 ghcr.io/microsoft/garnet --auth Password --password guest
+```
+
+设置日志记录级别
+
+```shell
+docker run --name garnet -d -p 6379:6379 --ulimit memlock=-1 ghcr.io/microsoft/garnet --auth Password --password guest --logger-level Trace
+```
+
+## 使用 Window Service 托管 Garnet 服务
+
+```shell
+dotnet add package Microsoft.Extensions.Hosting.WindowsServices
+```
+
+```csharp
+using Garnet;
+
+public class Program
+{
+    public static void Main(string[] args)
+    {
+        CreateHostBuilder(args).Build().Run();
+    }
+
+    public static IHostBuilder CreateHostBuilder(string[] args) =>
+        Host.CreateDefaultBuilder(args)
+            .UseWindowsService()
+            .ConfigureServices((hostContext, services) =>
+            {
+                services.AddHostedService<GarnetService>();
+            });
+}
+```
+
+```csharp
+
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Garnet;
+using Microsoft.Extensions.Hosting;
+
+public class GarnetService : IHostedService
+{
+    private GarnetServer _server;
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        _server = new GarnetServer();
+        _server.Start();
+        return Task.CompletedTask;
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken)
+    {
+        _server.Stop();
+        return Task.CompletedTask;
+    }
+}
+```
+
+```shell
+sc create GarnetService binPath= "C:\path\to\GarnetService.exe"
+
+sc start GarnetService
+
+```
+
+```shell
+dotnet add package Microsoft.Garnet.Client
+```
+
+```csharp
+using Garnet.Client;
+
+var client = new GarnetClient("localhost", 6379);
+
+client.Set("key", "value");
+
+var value = client.Get("key");
+
+Console.WriteLine(value);
+``` 
+
+## 购物车使用 Garnet 缓存
+
+```shell
+dotnet add package Microsoft.Extensions.Caching.StackExchangeRedis
+```
+
+```csharp
+builder.Services.AddStackExchangeRedisCache(options =>
+{
+     options.Configuration = builder.Configuration.GetConnectionString("MyRedisConStr");
+});
+```
+
+## 缓存测试工具
+
+使用 `redis-cli` 连接到 Garnet 缓存服务器，执行以下命令进行测试。
+
+```shell
+redis-cli -h localhost -p 6379 -a Password
+auth Password
+set key value
+get key
+```
+
+## 高可用性集群
+
+使用多个 Garnet 缓存服务器搭建高可用性集群，可以提高系统的可用性和可靠性。
+
+https://microsoft.github.io/garnet/docs/cluster/overview
+
+```csharp
+
+services.AddStackExchangeRedisCache(options =>
+{
+    options.Configuration = "localhost:6379,localhost:6380,localhost:6381";
+    options.InstanceName = "SampleInstance";
+});
+
+```
+
+```csharp
+
+services.AddStackExchangeRedisCache(options =>
+{
+    options.InstanceName = "SampleInstance";
+    options.ConfigurationOptions = new ConfigurationOptions
+    {
+        Password = "Password",
+        AbortOnConnectFail = false,
+        EndPoints =
+        {
+            { "localhost", 6379 },
+            { "localhost", 6380 },
+            { "localhost", 6381 }
+        }
+    };
+});
+
+```
+
+
+## 缓存最佳实践
+
+https://learn.microsoft.com/zh-cn/azure/architecture/best-practices/caching
+
+https://learn.microsoft.com/zh-cn/azure/architecture/patterns/cache-aside
+
+
+## 课外阅读
+
+
+关键字：缓存雪崩、缓存穿透、缓存击穿、缓存预热、缓存更新、缓存降级、缓存命中率、滑动过期、绝对过期、永不过期、缓存依赖。
+
+
+https://developer.aliyun.com/article/841392
+
+