dotnet add package Microsoft.Orleans.Persistence.DynamoDB

using Microsoft.Extensions.Hosting;
using Orleans.Configuration;
using Orleans.Hosting;

var builder = Host.CreateApplicationBuilder(args)
    .UseOrleans(siloBuilder =>
    {
        siloBuilder
            .UseLocalhostClustering()
            // Configure DynamoDB as grain storage
            .AddDynamoDBGrainStorage(
                name: "dynamoStore",
                configureOptions: options =>
                {
                    options.AccessKey = "YOUR_AWS_ACCESS_KEY";
                    options.SecretKey = "YOUR_AWS_SECRET_KEY";
                    options.Region = "us-east-1";
                    options.TableName = "OrleansGrainState";
                    options.CreateIfNotExists = true;
                });
    });

// Run the host
await builder.RunAsync();

// Define grain state class

public class MyGrainState
{
    public string Data { get; set; }
    public int Version { get; set; }
}

// Grain implementation that uses the DynamoDB storage
public class MyGrain : Grain, IMyGrain, IGrainWithStringKey
{
    private readonly IPersistentState<MyGrainState> _state;

    public MyGrain([PersistentState("state", "dynamoStore")] IPersistentState<MyGrainState> state)
    {
        _state = state;
    }

    public async Task SetData(string data)
    {
        _state.State.Data = data;
        _state.State.Version++;
        await _state.WriteStateAsync();
    }

    public Task<string> GetData()
    {
        return Task.FromResult(_state.State.Data);
    }
}