Akka.Cluster 1.4.21-beta1

Cluster support for Akka.NET

This is a prerelease version of Akka.Cluster.
There is a newer version of this package available.
See the version list below for details.
Install-Package Akka.Cluster -Version 1.4.21-beta1
dotnet add package Akka.Cluster --version 1.4.21-beta1
<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.
paket add Akka.Cluster --version 1.4.21-beta1
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Akka.Cluster, 1.4.21-beta1"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install Akka.Cluster as a Cake Addin
#addin nuget:?package=Akka.Cluster&version=1.4.21-beta1&prerelease

// Install Akka.Cluster as a Cake Tool
#tool nuget:?package=Akka.Cluster&version=1.4.21-beta1&prerelease
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

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 |

NuGet packages (22)

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

GitHub repositories (2)

Showing the top 2 popular GitHub repositories that depend on Akka.Cluster:

Repository Stars
AElfProject/AElf
A scalable cloud computing blockchain platform
Lutando/Akkatecture
a cqrs and event sourcing framework for dotnet core using akka.net

Version History

Version Downloads Last updated
1.4.25 1,292 9/8/2021
1.4.24 2,920 8/17/2021
1.4.23 1,732 8/10/2021
1.4.22 4,182 8/5/2021
1.4.21 11,729 6/16/2021
1.4.21-beta1 371 6/4/2021
1.4.20 9,000 5/12/2021
1.4.19 13,498 4/28/2021
1.4.18 9,858 3/23/2021
1.4.17 6,266 3/10/2021
1.4.16 33,600 1/22/2021
1.4.15 1,164 1/20/2021
1.4.14 7,499 12/30/2020
1.4.13 2,568 12/16/2020
1.4.12 60,061 11/16/2020
1.4.11 13,240 11/5/2020
1.4.10 39,880 8/20/2020
1.4.9 25,417 7/21/2020
1.4.8 34,436 6/17/2020
1.4.7 7,121 5/27/2020
1.4.6 11,007 5/12/2020
1.4.5 6,044 4/29/2020
1.4.4 13,275 3/31/2020
1.4.3 7,676 3/18/2020
1.4.2 3,134 3/13/2020
1.4.1 16,894 3/11/2020
1.4.1-rc3 1,054 3/10/2020
1.4.1-rc2 560 3/10/2020
1.4.1-rc1 1,182 2/28/2020
1.4.0-beta4 1,745 1/28/2020
1.4.0-beta3 8,041 10/30/2019
1.4.0-beta2 3,197 9/23/2019
1.4.0-beta1 2,457 7/19/2019
1.3.18 11,885 3/9/2020
1.3.17 45,356 12/20/2019
1.3.16 19,743 11/14/2019
1.3.15 49,037 9/23/2019
1.3.14 43,464 7/30/2019
1.3.13 28,486 4/30/2019
1.3.12 75,954 3/14/2019
1.3.11 74,177 12/18/2018
1.3.10 28,156 11/2/2018
1.3.9 44,443 8/23/2018
1.3.8 33,585 6/5/2018
1.3.7 5,269 5/15/2018
1.3.6 4,863 4/17/2018
1.3.5 16,970 2/22/2018
1.3.4 6,142 2/1/2018
1.3.3 4,522 1/19/2018
1.3.2 27,235 10/21/2017
1.3.1 7,697 9/5/2017
1.3.0 4,022 8/11/2017
1.2.3 7,813 7/10/2017
1.2.2 1,754 6/28/2017
1.2.1 1,316 6/23/2017
1.2.0 23,828 4/12/2017
1.1.3 8,296 1/23/2017
1.1.2 12,142 9/22/2016
1.1.1 5,489 7/16/2016
1.1.0 3,225 7/7/2016
1.0.8.25-beta 2,435 4/26/2016
1.0.8.24-beta 845 4/26/2016
1.0.7.18-beta 1,558 4/6/2016
1.0.6.17-beta 4,025 1/18/2016
1.0.6.16-beta 673 1/18/2016
1.0.5.15-beta 1,524 12/3/2015
1.0.5.14-beta 710 12/3/2015
1.0.4.12-beta 3,032 8/7/2015
1.0.3.11-beta 976 6/12/2015
1.0.2.9-beta 1,345 6/3/2015
1.0.1-pre1504282013 1,145 4/28/2015
1.0.0-pre1504092226 924 4/9/2015
1.0.0-dev1504032244 775 4/3/2015
0.8.0-pre1502120115 785 2/12/2015
0.7.1-pre1412132130 844 12/13/2014
0.7.0-pre1410202041 841 10/20/2014
0.7.0-pre1410201924 857 10/20/2014
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