Microsoft.Orleans.Persistence.Cosmos 9.2.0

Prefix Reserved
.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Microsoft.Orleans.Persistence.Cosmos --version 9.2.0
                    


                    

                
NuGet\Install-Package Microsoft.Orleans.Persistence.Cosmos -Version 9.2.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Microsoft.Orleans.Persistence.Cosmos" Version="9.2.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Microsoft.Orleans.Persistence.Cosmos" Version="9.2.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Microsoft.Orleans.Persistence.Cosmos" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Microsoft.Orleans.Persistence.Cosmos --version 9.2.0
                    


                    

                
#r "nuget: Microsoft.Orleans.Persistence.Cosmos, 9.2.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Microsoft.Orleans.Persistence.Cosmos@9.2.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Microsoft.Orleans.Persistence.Cosmos&version=9.2.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Microsoft.Orleans.Persistence.Cosmos&version=9.2.0
                    


                            Install as a Cake Tool

Microsoft Orleans Persistence for Azure Cosmos DB

Introduction

Microsoft Orleans Persistence for Azure Cosmos DB provides grain persistence for Microsoft Orleans using Azure Cosmos DB. This allows your grains to persist their state in Azure Cosmos DB and reload it when they are reactivated, offering a globally distributed, multi-model database service for your Orleans applications.

Getting Started

To use this package, install it via NuGet:

dotnet add package Microsoft.Orleans.Persistence.Cosmos

Example - Configuring Azure Cosmos DB Persistence

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

var builder = Host.CreateApplicationBuilder(args)
    .UseOrleans(siloBuilder =>
    {
        siloBuilder
            .UseLocalhostClustering()
            // Configure Azure Cosmos DB as grain storage
            .AddCosmosGrainStorage(
                name: "cosmosStore",
                configureOptions: options =>
                {
                    options.AccountEndpoint = "https://YOUR_COSMOS_ENDPOINT";
                    options.AccountKey = "YOUR_COSMOS_KEY";
                    options.DB = "YOUR_DATABASE_NAME";
                    options.CanCreateResources = true;
                });
    });

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

Example - Using Grain Storage in a Grain

// Define grain state class

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

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

    public MyGrain([PersistentState("state", "cosmosStore")] 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);
    }
}

Documentation

For more comprehensive documentation, please refer to:

Feedback & Contributing

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Microsoft.Orleans.Persistence.Cosmos:

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GitHub repositories (3)

Showing the top 3 popular GitHub repositories that depend on Microsoft.Orleans.Persistence.Cosmos:

Repository Stars
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Version Downloads Last Updated
9.2.1 5,983 7/16/2025
9.2.0 1,210 7/14/2025
9.2.0-preview3 321 6/10/2025
9.2.0-preview2 167 6/4/2025
9.2.0-preview1 139 4/4/2025
9.1.2 31,984 2/13/2025
9.0.1 34,251 11/23/2024
9.0.0 4,040 11/14/2024
8.2.0 63,833 7/12/2024
8.2.0-preview1 175 5/22/2024
8.1.0 18,305 4/17/2024
8.1.0-preview3 165 3/11/2024
8.1.0-preview2 158 2/23/2024
8.1.0-preview1 172 2/13/2024
8.0.0 4,329 1/5/2024
8.0.0-rc2 175 12/20/2023
8.0.0-rc1 173 12/4/2023
7.2.7 191 10/15/2024
7.2.6 8,830 3/9/2024
7.2.5 204 2/22/2024
7.2.4 14,428 12/2/2023
7.2.3 1,132 11/3/2023
7.2.2 1,569 10/16/2023
7.2.1 6,972 7/11/2023
7.2.0 3,250 7/7/2023
3.8.0-preview5 264 5/12/2025
3.8.0-preview4 174 5/6/2025
3.8.0-preview3 202 4/8/2025