Akka.Persistence.Query 1.4.21

Stream based query interface for persistence journal plugins for Akka.NET

Install-Package Akka.Persistence.Query -Version 1.4.21
dotnet add package Akka.Persistence.Query --version 1.4.21
<PackageReference Include="Akka.Persistence.Query" Version="1.4.21" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Akka.Persistence.Query --version 1.4.21
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Akka.Persistence.Query, 1.4.21"
#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.Persistence.Query as a Cake Addin
#addin nuget:?package=Akka.Persistence.Query&version=1.4.21

// Install Akka.Persistence.Query as a Cake Tool
#tool nuget:?package=Akka.Persistence.Query&version=1.4.21
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 |
| --- | --- | --- | --- |
| 5 | 34 | 24 | Aaron Stannard |
| 4 | 196 | 77 | Gregorius Soedharmo |
| 3 | 3 | 3 | dependabot[bot] |
| 1 | 2 | 2 | Wessel Kranenborg |
| 1 | 1 | 1 | Martijn Schoemaker |

NuGet packages (18)

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

Package Downloads
Akka.Persistence.Query.Sql
Akka.NET streams support for ADO.NET Persistence middleware.
Akka.Persistence.TCK
Testkit for Persistence actor support for Akka.NET
Akka.Persistence.Redis
Akka.NET Persistence journal and snapshot store backed by Redis.
Akka.Persistence.MongoDb
Akka Persistence journal and snapshot store backed by MongoDB database.
Akkatecture
a cqrs and event sourcing framework for akka.net

GitHub repositories (2)

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

Repository Stars
Lutando/Akkatecture
a cqrs and event sourcing framework for dotnet core using akka.net
axzxs2001/Asp.NetCoreExperiment
原来所有项目都移动到**OleVersion**目录下进行保留。新的案例装以.net 5.0为主,一部分对以前案例进行升级,一部分将以前的工作经验总结出来,以供大家参考!

Version History

Version Downloads Last updated
1.4.21 176 6/16/2021
1.4.21-beta1 216 6/4/2021
1.4.20 1,845 5/12/2021
1.4.19 1,141 4/28/2021
1.4.18 3,307 3/23/2021
1.4.17 4,149 3/10/2021
1.4.16 8,746 1/22/2021
1.4.15 455 1/20/2021
1.4.14 5,111 12/30/2020
1.4.13 619 12/16/2020
1.4.12 2,643 11/16/2020
1.4.11 5,484 11/5/2020
1.4.10 5,326 8/20/2020
1.4.9 6,920 7/21/2020
1.4.8 13,334 6/17/2020
1.4.7 2,297 5/27/2020
1.4.6 2,312 5/12/2020
1.4.5 7,084 4/29/2020
1.4.4 19,736 3/31/2020
1.4.3 969 3/18/2020
1.4.2 892 3/13/2020
1.4.1 2,762 3/11/2020
1.4.1-rc3 600 3/10/2020
1.4.1-rc2 439 3/10/2020
1.4.1-rc1 721 2/28/2020
1.4.0-beta4 822 1/28/2020
1.4.0-beta3 1,638 10/30/2019
1.4.0-beta2 526 9/23/2019
1.4.0-beta1 514 7/19/2019
1.3.18 3,555 3/9/2020
1.3.17 5,819 12/20/2019
1.3.16 1,850 11/14/2019
1.3.15 13,145 9/23/2019
1.3.14 5,883 7/30/2019
1.3.13 13,453 4/30/2019
1.3.12 6,509 3/14/2019
1.3.11 7,306 12/18/2018
1.3.10 4,475 11/2/2018
1.3.9 10,825 8/23/2018
1.3.8 4,517 6/5/2018
1.3.7 2,797 5/15/2018
1.3.6 1,437 4/17/2018
1.3.5 4,803 2/22/2018
1.3.4 1,986 2/1/2018
1.3.3 1,227 1/19/2018
1.3.2 5,821 10/21/2017
1.3.1 23,573 9/5/2017
1.3.0 2,585 8/17/2017
1.3.0-beta 845 8/11/2017
1.2.3.43-beta 2,083 7/10/2017
1.2.3.41-beta 702 7/10/2017
1.2.2.40-beta 1,100 6/28/2017
1.2.2.39-beta 707 6/28/2017
1.2.1.38-beta 912 6/23/2017
1.2.1.37-beta 707 6/23/2017
1.2.0.36-beta 2,305 4/13/2017
1.2.0.35-beta 711 4/13/2017
1.2.0.34-beta 705 4/12/2017
1.2.0.33-beta 678 4/12/2017
1.1.3.32-beta 4,059 1/23/2017
1.1.3.31-beta 778 1/23/2017
1.1.2.30-beta 1,096 9/22/2016
1.1.2.29-beta 696 9/22/2016
1.1.1.28-beta 945 7/16/2016
1.1.1.27-beta 747 7/16/2016
1.1.0.26-beta 787 7/7/2016