Aspire.StackExchange.Redis 9.0.0

Aspire.StackExchange.Redis library

Registers an IConnectionMultiplexer in the DI container for connecting to Redis®* server. Enables corresponding health check, logging, and telemetry.

Getting started

Prerequisites

• Redis server and the server hostname for connecting a client.

Install the package

Install the .NET Aspire StackExchange Redis library with NuGet:

dotnet add package Aspire.StackExchange.Redis

Usage example

In the Program.cs file of your project, call the AddRedisClient extension method to register an IConnectionMultiplexer for use via the dependency injection container. The method takes a connection name parameter.

builder.AddRedisClient("cache");

You can then retrieve the IConnectionMultiplexer instance using dependency injection. For example, to retrieve the connection multiplexer from a Web API controller:

private readonly IConnectionMultiplexer _cache;

public ProductsController(IConnectionMultiplexer cache)
{
    _cache = cache;
}

See the StackExchange.Redis documentation for examples on using the IConnectionMultiplexer.

Configuration

The .NET Aspire StackExchange Redis component provides multiple options to configure the Redis connection based on the requirements and conventions of your project. Note that at least one host name is required to connect.

Use a connection string

When using a connection string from the ConnectionStrings configuration section, you can provide the name of the connection string when calling builder.AddRedisClient():

builder.AddRedisClient("myRedisConnectionName");

And then the connection string will be retrieved from the ConnectionStrings configuration section:

{
  "ConnectionStrings": {
    "myRedisConnectionName": "localhost:6379"
  }
}

See the Basic Configuration Settings of the StackExchange.Redis docs for more information on how to format this connection string.

Use configuration providers

The Redis component supports Microsoft.Extensions.Configuration. It loads the StackExchangeRedisSettings and ConfigurationOptions from configuration by using the Aspire:StackExchange:Redis key. Example appsettings.json that configures some of the options:

{
  "Aspire": {
    "StackExchange": {
      "Redis": {
        "ConfigurationOptions": {
          "ConnectTimeout": 3000,
          "ConnectRetry": 2
        },
        "DisableHealthChecks": true,
        "DisableTracing": false
      }
    }
  }
}

Use inline delegates

You can also pass the Action<StackExchangeRedisSettings> configureSettings delegate to set up some or all the options inline, for example to disable health checks from code:

builder.AddRedisClient("cache", settings => settings.DisableHealthChecks = true);

You can also setup the ConfigurationOptions using the Action<ConfigurationOptions> configureOptions delegate parameter of the AddRedisClient method. For example to set the connection timeout:

builder.AddRedisClient("cache", configureOptions: options => options.ConnectTimeout = 3000);

AppHost extensions

In your AppHost project, install the Aspire.Hosting.Redis library with NuGet:

dotnet add package Aspire.Hosting.Redis

Then, in the Program.cs file of AppHost, register a Redis server and consume the connection using the following methods:

var redis = builder.AddRedis("cache");

var myService = builder.AddProject<Projects.MyService>()
                       .WithReference(redis);

The WithReference method configures a connection in the MyService project named cache. In the Program.cs file of MyService, the redis connection can be consumed using:

builder.AddRedisClient("cache");

Additional documentation

• https://stackexchange.github.io/StackExchange.Redis/Basics
• https://github.com/dotnet/aspire/tree/main/src/Components/README.md

Feedback & contributing

https://github.com/dotnet/aspire

*Redis is a registered trademark of Redis Ltd. Any rights therein are reserved to Redis Ltd.