### Install Immediate.Cache using NuGet or .NET CLI

Source: https://github.com/immediateplatform/immediate.cache/blob/master/readme.md

Instructions for installing the Immediate.Cache library using either the NuGet Package Manager Console or the .NET Core command-line interface.

```CLI
Install-Package Immediate.Cache
```

```CLI
dotnet add package Immediate.Cache
```

--------------------------------

### Register Immediate.Cache services with Dependency Injection in C#

Source: https://github.com/immediateplatform/immediate.cache/blob/master/readme.md

Illustrates how to configure dependency injection for Immediate.Cache in `Program.cs`. This includes registering the in-memory cache, the `Owned<>` generic type, and the specific `GetValueCache` service as singletons.

```C#
services.AddMemoryCache();
```

```C#
services.AddSingleton(typeof(Owned<>));
```

```C#
services.AddSingleton<GetValueCache>();
```

--------------------------------

### Retrieve cached data using Immediate.Cache in C#

Source: https://github.com/immediateplatform/immediate.cache/blob/master/readme.md

Demonstrates how to retrieve data from an instance of the custom cache class. If a value is cached, it's returned; otherwise, the handler is executed, and its result is stored in the cache.

```C#
var response = await cache.GetValue(request, token);
```

--------------------------------

### Create a custom cache class for Immediate.Handlers in C#

Source: https://github.com/immediateplatform/immediate.cache/blob/master/readme.md

Defines a `GetValue` handler and a `GetValueCache` class that extends `ApplicationCacheBase` to provide caching for the handler's responses. The `TransformKey` method is overridden to generate a unique cache key for each request.

```C#
[Handler]
public static partial class GetValue
{
	public sealed record Query(int Value);
	public sealed record Response(int Value);

	private static ValueTask<Response> HandleAsync(
		Query query,
		CancellationToken _
	) => ValueTask.FromResult(new Response(query.Value));
}

public sealed class GetValueCache(
	IMemoryCache memoryCache,
	Owned<IHandler<GetValue.Query, GetValue.Response>> ownedHandler
) : ApplicationCacheBase<GetValue.Query, GetValue.Response>(
	memoryCache,
	ownedHandler
)
{
	protected override string TransformKey(GetValue.Query request) =>
		$"GetValue(query: {request.Value})";
}
```

--------------------------------

### Update cached data using Immediate.Cache in C#

Source: https://github.com/immediateplatform/immediate.cache/blob/master/readme.md

Illustrates how to directly set or update a value in the cache. If a handler is currently running for the same request, it will be cancelled, and waiting callers will immediately receive the new response.

```C#
await cache.SetValue(request, response);
```

--------------------------------

### Remove cached data using Immediate.Cache in C#

Source: https://github.com/immediateplatform/immediate.cache/blob/master/readme.md

Shows how to invalidate and remove a specific entry from the cache. If a handler is currently processing the request, it will be cancelled, and any callers waiting on the results will experience a `CancellationToken` cancellation.

```C#
await cache.RemoveValue(request);
```

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