Akka.Cluster 1.4.21-beta1

Prefix Reserved
.NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher.
Details
Advisory: https://github.com/advisories/GHSA-jhpv-4q4f-43g5 Severity: critical
This is a prerelease version of Akka.Cluster.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Akka.Cluster --version 1.4.21-beta1
                    


                    

                
NuGet\Install-Package Akka.Cluster -Version 1.4.21-beta1
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="Akka.Cluster" Version="1.4.21-beta1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Akka.Cluster" Version="1.4.21-beta1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Akka.Cluster" />
                    


                            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 Akka.Cluster --version 1.4.21-beta1
                    


                    

                
#r "nuget: Akka.Cluster, 1.4.21-beta1"
#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 Akka.Cluster@1.4.21-beta1
#: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=Akka.Cluster&version=1.4.21-beta1&prerelease
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Akka.Cluster&version=1.4.21-beta1&prerelease
                    


                            Install as a Cake Tool

Cluster support for Akka.NET

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  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. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (37)

Showing the top 5 NuGet packages that depend on Akka.Cluster:

Package Downloads
Akka.Cluster.Tools

Distributed publish/subscribe, client and singleton support for Akka.NET cluster
Akka.DistributedData

Replicated data using CRDT structures
Petabridge.Cmd.Cluster

Akka.Cluster Petabridge.Cmd palettes for cluster management and monitoring.
Akka.HealthCheck.Cluster

Akka.NET and Akka.Cluster healthchecks for environments like K8s, AWS, Azure, Pivotal Cloud Foundry, and more.
Akka.Management

Akka cluster management module for Akka.NET

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on Akka.Cluster:

Repository Stars
ThembisileNGQ/Akkatecture
a cqrs and event sourcing framework for dotnet core using akka.net
Version Downloads Last Updated
1.5.55 1,125 10/26/2025
1.5.54 3,110 10/17/2025
1.5.53 8,429 10/10/2025
1.5.52 13,830 10/6/2025
1.5.51 13,746 10/1/2025 1.5.51 has at least one vulnerability with critical severity.
1.5.50 8,009 9/22/2025 1.5.50 has at least one vulnerability with critical severity.
1.5.49 5,110 9/10/2025 1.5.49 has at least one vulnerability with critical severity.
1.5.48 14,005 8/22/2025 1.5.48 has at least one vulnerability with critical severity.
1.5.47 3,249 8/14/2025 1.5.47 has at least one vulnerability with critical severity.
1.5.46 10,465 7/17/2025 1.5.46 has at least one vulnerability with critical severity.
1.5.45 24,153 7/7/2025 1.5.45 has at least one vulnerability with critical severity.
1.5.44 9,331 6/19/2025 1.5.44 has at least one vulnerability with critical severity.
1.5.43 4,761 6/10/2025 1.5.43 has at least one vulnerability with critical severity.
1.5.42 34,901 5/21/2025 1.5.42 has at least one vulnerability with critical severity.
1.5.41 3,809 5/6/2025 1.5.41 has at least one vulnerability with critical severity.
1.5.40 100,911 3/24/2025 1.5.40 has at least one vulnerability with critical severity.
1.5.39 8,637 3/14/2025 1.5.39 has at least one vulnerability with critical severity.
1.5.38 117,417 2/17/2025 1.5.38 has at least one vulnerability with critical severity.
1.5.37 131,232 1/23/2025 1.5.37 has at least one vulnerability with critical severity.
1.5.36 3,445 1/22/2025 1.5.36 has at least one vulnerability with critical severity.
1.5.35 12,651 1/13/2025 1.5.35 has at least one vulnerability with critical severity.
1.5.34 3,417 1/7/2025 1.5.34 has at least one vulnerability with critical severity.
1.5.33 56,096 12/23/2024 1.5.33 has at least one vulnerability with critical severity.
1.5.32 16,130 12/4/2024 1.5.32 has at least one vulnerability with critical severity.
1.5.31 35,314 11/11/2024 1.5.31 has at least one vulnerability with critical severity.
1.5.30 48,064 10/3/2024 1.5.30 has at least one vulnerability with critical severity.
1.5.29 3,936 10/1/2024 1.5.29 has at least one vulnerability with critical severity.
1.5.28 65,380 9/4/2024 1.5.28 has at least one vulnerability with critical severity.
1.5.28-beta1 613 8/23/2024 1.5.28-beta1 has at least one vulnerability with critical severity.
1.5.27.1 199,608 7/26/2024 1.5.27.1 has at least one vulnerability with critical severity.
1.5.27 1,573 7/25/2024 1.5.27 has at least one vulnerability with critical severity.
1.5.27-beta2 4,363 7/3/2024 1.5.27-beta2 has at least one vulnerability with critical severity.
1.5.27-beta1 630 7/3/2024 1.5.27-beta1 has at least one vulnerability with critical severity.
1.5.26 182,836 6/27/2024 1.5.26 has at least one vulnerability with critical severity.
1.5.25 147,328 6/14/2024 1.5.25 has at least one vulnerability with critical severity.
1.5.24 10,357 6/7/2024 1.5.24 has at least one vulnerability with critical severity.
1.5.23 2,460 6/6/2024 1.5.23 has at least one vulnerability with critical severity.
1.5.22 3,492 6/3/2024 1.5.22 has at least one vulnerability with critical severity.
1.5.21 6,356 5/28/2024 1.5.21 has at least one vulnerability with critical severity.
1.5.20 36,660 4/29/2024 1.5.20 has at least one vulnerability with critical severity.
1.5.19 34,207 4/15/2024 1.5.19 has at least one vulnerability with critical severity.
1.5.18 53,958 3/12/2024 1.5.18 has at least one vulnerability with critical severity.
1.5.17.1 14,677 3/2/2024 1.5.17.1 has at least one vulnerability with critical severity.
1.5.17 2,117 2/29/2024 1.5.17 has at least one vulnerability with critical severity.
1.5.16 36,811 1/29/2024 1.5.16 has at least one vulnerability with critical severity.
1.5.15 49,695 1/10/2024 1.5.15 has at least one vulnerability with critical severity.
1.5.14 47,683 11/3/2023 1.5.14 has at least one vulnerability with critical severity.
1.5.13 124,995 9/18/2023 1.5.13 has at least one vulnerability with critical severity.
1.5.13-beta1 1,163 8/25/2023 1.5.13-beta1 has at least one vulnerability with critical severity.
1.5.12 59,812 8/2/2023 1.5.12 has at least one vulnerability with critical severity.
1.5.11 4,990 7/27/2023 1.5.11 has at least one vulnerability with critical severity.
1.5.10 11,517 7/25/2023 1.5.10 has at least one vulnerability with critical severity.
1.5.9 16,330 7/17/2023 1.5.9 has at least one vulnerability with critical severity.
1.5.8 85,843 6/15/2023 1.5.8 has at least one vulnerability with critical severity.
1.5.7 74,728 5/17/2023 1.5.7 has at least one vulnerability with critical severity.
1.5.6 14,061 5/8/2023 1.5.6 has at least one vulnerability with critical severity.
1.5.5 42,563 5/4/2023 1.5.5 has at least one vulnerability with critical severity.
1.5.4 18,203 4/25/2023 1.5.4 has at least one vulnerability with critical severity.
1.5.3 4,756 4/20/2023 1.5.3 has at least one vulnerability with critical severity.
1.5.2 87,621 4/6/2023 1.5.2 has at least one vulnerability with critical severity.
1.5.1 12,165 3/15/2023 1.5.1 has at least one vulnerability with critical severity.
1.5.0 59,392 3/2/2023 1.5.0 has at least one vulnerability with critical severity.
1.5.0-beta6 1,912 3/1/2023 1.5.0-beta6 has at least one vulnerability with critical severity.
1.5.0-beta5 1,326 3/1/2023 1.5.0-beta5 has at least one vulnerability with critical severity.
1.5.0-beta4 1,422 2/28/2023 1.5.0-beta4 has at least one vulnerability with critical severity.
1.5.0-beta3 1,465 2/27/2023 1.5.0-beta3 has at least one vulnerability with critical severity.
1.5.0-beta2 1,355 2/23/2023 1.5.0-beta2 has at least one vulnerability with critical severity.
1.5.0-beta1 3,046 2/20/2023 1.5.0-beta1 has at least one vulnerability with critical severity.
1.5.0-alpha4 1,861 2/1/2023 1.5.0-alpha4 has at least one vulnerability with critical severity.
1.5.0-alpha3 1,954 11/15/2022 1.5.0-alpha3 has at least one vulnerability with critical severity.
1.5.0-alpha2 1,445 10/17/2022 1.5.0-alpha2 has at least one vulnerability with critical severity.
1.5.0-alpha1 1,542 8/22/2022 1.5.0-alpha1 has at least one vulnerability with critical severity.
1.4.51 31,174 6/28/2023 1.4.51 has at least one vulnerability with critical severity.
1.4.50 15,096 3/15/2023 1.4.50 has at least one vulnerability with critical severity.
1.4.49 28,867 1/27/2023 1.4.49 has at least one vulnerability with critical severity.
1.4.49-beta1 1,386 1/11/2023 1.4.49-beta1 has at least one vulnerability with critical severity.
1.4.48 37,378 1/5/2023 1.4.48 has at least one vulnerability with critical severity.
1.4.47 21,103 12/9/2022 1.4.47 has at least one vulnerability with critical severity.
1.4.46 40,989 11/15/2022 1.4.46 has at least one vulnerability with critical severity.
1.4.45 31,188 10/19/2022 1.4.45 has at least one vulnerability with critical severity.
1.4.44 5,504 10/17/2022 1.4.44 has at least one vulnerability with critical severity.
1.4.43 16,956 9/27/2022 1.4.43 has at least one vulnerability with critical severity.
1.4.42 6,264 9/23/2022 1.4.42 has at least one vulnerability with critical severity.
1.4.41 147,597 8/31/2022 1.4.41 has at least one vulnerability with critical severity.
1.4.40 20,427 7/22/2022 1.4.40 has at least one vulnerability with critical severity.
1.4.39 106,601 6/1/2022 1.4.39 has at least one vulnerability with critical severity.
1.4.38 43,782 5/6/2022 1.4.38 has at least one vulnerability with critical severity.
1.4.37 30,749 4/14/2022 1.4.37 has at least one vulnerability with critical severity.
1.4.36 22,711 4/5/2022 1.4.36 has at least one vulnerability with critical severity.
1.4.35 29,447 3/18/2022 1.4.35 has at least one vulnerability with critical severity.
1.4.34 16,235 3/7/2022 1.4.34 has at least one vulnerability with critical severity.
1.4.33 51,979 2/14/2022 1.4.33 has at least one vulnerability with critical severity.
1.4.32 25,866 1/18/2022 1.4.32 has at least one vulnerability with critical severity.
1.4.31 37,588 12/21/2021 1.4.31 has at least one vulnerability with critical severity.
1.4.30 3,889 12/20/2021 1.4.30 has at least one vulnerability with critical severity.
1.4.29 5,820 12/13/2021 1.4.29 has at least one vulnerability with critical severity.
1.4.28 84,392 11/10/2021 1.4.28 has at least one vulnerability with critical severity.
1.4.27 75,209 10/11/2021 1.4.27 has at least one vulnerability with critical severity.
1.4.26 9,213 9/28/2021 1.4.26 has at least one vulnerability with critical severity.
1.4.25 14,265 9/8/2021 1.4.25 has at least one vulnerability with critical severity.
1.4.24 18,827 8/17/2021 1.4.24 has at least one vulnerability with critical severity.
1.4.23 6,876 8/10/2021 1.4.23 has at least one vulnerability with critical severity.
1.4.22 8,826 8/5/2021 1.4.22 has at least one vulnerability with critical severity.
1.4.21 64,895 6/16/2021 1.4.21 has at least one vulnerability with critical severity.
1.4.21-beta1 2,020 6/4/2021 1.4.21-beta1 has at least one vulnerability with critical severity.
1.4.20 31,218 5/12/2021 1.4.20 has at least one vulnerability with critical severity.
1.4.19 67,284 4/28/2021 1.4.19 has at least one vulnerability with critical severity.
1.4.18 20,811 3/23/2021 1.4.18 has at least one vulnerability with critical severity.
1.4.17 12,229 3/10/2021 1.4.17 has at least one vulnerability with critical severity.
1.4.16 48,263 1/22/2021 1.4.16 has at least one vulnerability with critical severity.
1.4.15 6,539 1/20/2021 1.4.15 has at least one vulnerability with critical severity.
1.4.14 19,829 12/30/2020 1.4.14 has at least one vulnerability with critical severity.
1.4.13 7,009 12/16/2020 1.4.13 has at least one vulnerability with critical severity.
1.4.12 230,467 11/16/2020 1.4.12 has at least one vulnerability with critical severity.
1.4.11 23,541 11/5/2020 1.4.11 has at least one vulnerability with critical severity.
1.4.10 70,563 8/20/2020 1.4.10 has at least one vulnerability with critical severity.
1.4.9 38,879 7/21/2020 1.4.9 has at least one vulnerability with critical severity.
1.4.8 67,729 6/17/2020 1.4.8 has at least one vulnerability with critical severity.
1.4.7 13,917 5/27/2020 1.4.7 has at least one vulnerability with critical severity.
1.4.6 17,264 5/12/2020 1.4.6 has at least one vulnerability with critical severity.
1.4.5 10,422 4/29/2020 1.4.5 has at least one vulnerability with critical severity.
1.4.4 22,702 3/31/2020 1.4.4 has at least one vulnerability with critical severity.
1.4.3 14,850 3/18/2020 1.4.3 has at least one vulnerability with critical severity.
1.4.2 8,611 3/13/2020 1.4.2 has at least one vulnerability with critical severity.
1.4.1 33,887 3/11/2020 1.4.1 has at least one vulnerability with critical severity.
1.4.1-rc3 2,902 3/10/2020 1.4.1-rc3 has at least one vulnerability with critical severity.
1.4.1-rc2 2,221 3/10/2020 1.4.1-rc2 has at least one vulnerability with critical severity.
1.4.1-rc1 3,066 2/28/2020 1.4.1-rc1 has at least one vulnerability with critical severity.
1.4.0-beta4 3,448 1/28/2020 1.4.0-beta4 has at least one vulnerability with critical severity.
1.4.0-beta3 9,978 10/30/2019 1.4.0-beta3 has at least one vulnerability with critical severity.
1.4.0-beta2 4,903 9/23/2019 1.4.0-beta2 has at least one vulnerability with critical severity.
1.4.0-beta1 4,322 7/19/2019 1.4.0-beta1 has at least one vulnerability with critical severity.
1.3.19 599 5/2/2024 1.3.19 has at least one vulnerability with critical severity.
1.3.18 20,076 3/9/2020 1.3.18 has at least one vulnerability with critical severity.
1.3.17 69,261 12/20/2019 1.3.17 has at least one vulnerability with critical severity.
1.3.16 27,329 11/14/2019 1.3.16 has at least one vulnerability with critical severity.
1.3.15 72,971 9/23/2019 1.3.15 has at least one vulnerability with critical severity.
1.3.14 59,454 7/30/2019 1.3.14 has at least one vulnerability with critical severity.
1.3.13 50,905 4/30/2019 1.3.13 has at least one vulnerability with critical severity.
1.3.12 103,286 3/14/2019 1.3.12 has at least one vulnerability with critical severity.
1.3.11 128,843 12/18/2018 1.3.11 has at least one vulnerability with critical severity.
1.3.10 105,713 11/2/2018 1.3.10 has at least one vulnerability with critical severity.
1.3.9 52,556 8/23/2018 1.3.9 has at least one vulnerability with critical severity.
1.3.8 41,669 6/5/2018 1.3.8 has at least one vulnerability with critical severity.
1.3.7 9,186 5/15/2018 1.3.7 has at least one vulnerability with critical severity.
1.3.6 9,052 4/17/2018 1.3.6 has at least one vulnerability with critical severity.
1.3.5 26,073 2/22/2018 1.3.5 has at least one vulnerability with critical severity.
1.3.4 9,380 2/1/2018 1.3.4 has at least one vulnerability with critical severity.
1.3.3 9,832 1/19/2018 1.3.3 has at least one vulnerability with critical severity.
1.3.2 36,485 10/21/2017 1.3.2 has at least one vulnerability with critical severity.
1.3.1 13,693 9/5/2017 1.3.1 has at least one vulnerability with critical severity.
1.3.0 8,763 8/11/2017 1.3.0 has at least one vulnerability with critical severity.
1.2.3 13,915 7/10/2017 1.2.3 has at least one vulnerability with critical severity.
1.2.2 4,520 6/28/2017 1.2.2 has at least one vulnerability with critical severity.
1.2.1 4,585 6/23/2017 1.2.1 has at least one vulnerability with critical severity.
1.2.0 29,665 4/12/2017 1.2.0 has at least one vulnerability with critical severity.
1.1.3 13,263 1/23/2017
1.1.2 17,818 9/22/2016
1.1.1 9,157 7/16/2016
1.1.0 9,519 7/7/2016
1.0.8.25-beta 4,481 4/26/2016
1.0.8.24-beta 2,311 4/26/2016
1.0.7.18-beta 3,204 4/6/2016
1.0.6.17-beta 5,424 1/18/2016
1.0.6.16-beta 1,320 1/18/2016
1.0.5.15-beta 2,396 12/3/2015
1.0.5.14-beta 1,492 12/3/2015
1.0.4.12-beta 4,230 8/7/2015
1.0.3.11-beta 1,660 6/12/2015
1.0.2.9-beta 2,046 6/3/2015
1.0.1-pre1504282013 2,064 4/28/2015
1.0.0-pre1504092226 1,660 4/9/2015
1.0.0-dev1504032244 1,460 4/3/2015
0.8.0-pre1502120115 1,671 2/12/2015
0.7.1-pre1412132130 1,780 12/13/2014
0.7.0-pre1410202041 1,562 10/20/2014
0.7.0-pre1410201924 1,759 10/20/2014

Maintenance Release for Akka.NET 1.4**
Akka.NET v1.4.21 is a significant release that includes major performance improvements, bug fixes, and a major update to the [Akka.DependencyInjection NuGet package](https://getakka.net/articles/actors/dependency-injection.html).
Performance Improvements**
Akka.NET v1.4.21 includes some major performance fixes and improvements:
[`Ask` is now ~10% faster](https://github.com/akkadotnet/akka.net/pull/5051)
[`MurmurHash` is 33% faster and allocates 0 memory](https://github.com/akkadotnet/akka.net/pull/5028) - used _heavily_ in DData, Cluster Sharding, and Consistent Hash Routers
`ActorPath.Parse` went from 1672 ns/op to 527 ns/op - a 68% improvement in throughput and a 50% reduction in memory. See [#5039](https://github.com/akkadotnet/akka.net/pull/5039) and [#5068](https://github.com/akkadotnet/akka.net/pull/5068).
[Akka.Remote: remove `ActorPath.ToString` call from `ResolveActorRefWithLocalAddress`](https://github.com/akkadotnet/akka.net/pull/5034)
Important**: [Revert `ThreadPool.SetMinThreads(0,0)`](https://github.com/akkadotnet/akka.net/pull/5059) - based on the input from users on "[Akka.NET v1.4.19: ChannelExecutor performance data](https://github.com/akkadotnet/akka.net/discussions/4983)"
Our observed performance numbers for Akka.Remote show a significant increase in performance for v1.4.21 over v1.4.20:
Before*
```
PS> dotnet run -c Release --framework netcoreapp3.1
OSVersion:                         Microsoft Windows NT 6.2.9200.0
ProcessorCount:                    16
ClockSpeed:                        0 MHZ
Actor Count:                       32
Messages sent/received per client: 200000  (2e5)
Is Server GC:                      True
Thread count:                      109
Num clients, Total [msg], Msgs/sec, Total [ms]
1,  200000,    113379,    1764.56
5, 1000000,    186429,    5364.05
10, 2000000,    185340,   10791.11
15, 3000000,    183218,   16374.06
20, 4000000,    179824,   22244.63
25, 5000000,    182716,   27365.89
30, 6000000,    182039,   32960.61
```
After*
```
PS> dotnet run -c Release --framework netcoreapp3.1
OSVersion:                         Microsoft Windows NT 6.2.9200.0
ProcessorCount:                    16
ClockSpeed:                        0 MHZ
Actor Count:                       32
Messages sent/received per client: 200000  (2e5)
Is Server GC:                      True
Thread count:                      111
Num clients, Total [msg], Msgs/sec, Total [ms]
1,  200000,    109770,    1822.14
5, 1000000,    192902,    5184.79
10, 2000000,    191663,   10435.53
15, 3000000,    191339,   15679.11
20, 4000000,    192725,   20755.78
25, 5000000,    189754,   26350.14
30, 6000000,    189772,   31617.20
```
> N.B. these after numbers don't benefit from the performance benefits we observed in v1.4.20 when we invoked `ThreadPool.SetMinThreads(0,0)`, which makes them even more impressive.
Akka.DependencyInjection Updates**
We had one major issue we implemented in v1.4.21 for Akka.DependencyInjection: [Abstraction of `ServiceProvider`, Improving Akka.DependencyInjection ](https://github.com/akkadotnet/akka.net/pull/4814)
What this change did was:
Deprecate the `Akka.DependencyInjection.ServiceProvider` class in favor of the `Akka.DependencyInjection.DependencyResolver` class - to avoid namespace collision with Microsoft.Extensions.DependencyInjection.ServiceProvider;
Deprecates the `Akka.DependencyInjection.ServiceProviderSetup` class in favor of the `Akka.DependencyInjection.DependencyResolverSetup` class for consistency reasons;
`Akka.DependencyInjection.DependencyResolver` now takes an input of type [`IDependencyResolver`](https://getakka.net/api/Akka.DependencyInjection.IDependencyResolver.html), which allows users to abstract away the `IServiceProvider` and mock / replace it during unit testing; and
Added some non-generic `Props` methods for dynamically spawning actors via DI.
All of these changes are backwards-compatible with v1.4.20 and earlier - and the deprecation warnings will appear in your code when you upgrade. If you run into any [issues upgrading to Akka.DependencyInjection v1.4.21 please reply on this thread](https://github.com/akkadotnet/akka.net/discussions/5070)!
Other Changes and Fixes**
[Akka.Streams: A couple of fixes affecting the `FileSubscriber`](https://github.com/akkadotnet/akka.net/pull/5035)
[Akka.DistributedData: memory leak when recovering events from LMDB data store](https://github.com/akkadotnet/akka.net/issues/5022)
[Akka.DistributedData: port `VectorClock` performance optimizations to `VersionVector` and similar types](https://github.com/akkadotnet/akka.net/issues/4956)
To see the [full set of fixes in Akka.NET v1.4.21, please see the milestone on Github](https://github.com/akkadotnet/akka.net/milestone/51).
| COMMITS | LOC+ | LOC- | AUTHOR |
| --- | --- | --- | --- |
| 12 | 999 | 160 | Aaron Stannard |
| 10 | 410 | 299 | Gregorius Soedharmo |
| 4 | 853 | 520 | Ismael Hamed |
| 4 | 5 | 5 | dependabot[bot] |
| 1 | 6 | 2 | Brah McDude |
| 1 | 428 | 67 | Sam Ember |
| 1 | 1 | 1 | Martin |