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akkadotnet/akka.net

Port of Akka actors for .NET

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Mar 31 18:16

Aaronontheweb on 1.4.4

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Mar 31 18:13

Aaronontheweb on master

Fix typo (#4349) Fix a typo in… Bump Microsoft.Data.SQLite from… Optimize memory allocations fro… and 10 more (compare)
Mar 31 18:13

Aaronontheweb closed #4365
Mar 31 18:10

Aaronontheweb opened #4365
Mar 31 18:09

Aaronontheweb on dev

v1.4.4 release notes (#4364) (compare)
Mar 31 18:09

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Natan Vivo

@nvivo

aaron, are you married?

Aaron Stannard

@Aaronontheweb

https://twitter.com/Aaronontheweb/status/590547599964446720

does that answer your question?

Natan Vivo

@nvivo

hahahaha

that's why you have so much energy then!

Aaron Stannard

@Aaronontheweb

haha

Joshua Benjamin

@annymsMthd

I now know more about the XUnit inner working than I ever wanted to know.

Aaron Stannard

@Aaronontheweb

@annymsMthd if you stick around on Akka.NET long enough you'll use that sentence for a lot of different things

oh hey, here's how the JVM type system does X!

Joshua Benjamin

@annymsMthd

lol

Joshua Benjamin

@annymsMthd

@smalldave Did you see @Aaronontheweb and my conversation about the MultiNodeTestRunner this morning?

Nikita Tsukanov

@kekekeks

and small examples do fit nicely in the comments - we do that in a few places

Oh, yeah, I remember that ReSharper tooltip that covered almost entire 27" screen with example from Xamarin.Forms while I was typing.

SQL-server Akka.Persistence Impl

I'm wondering, why the code is so MSSQL-specific. It was easy just to use something lightweight like linq2db and get support for almost all database engines.

Nikita Tsukanov

@kekekeks

Is there any way for an actor to have "wildcard" address? I. e. I want to have some EntityLazyLoaderActor to recieve all messages to /user/entities/* and then load an actor from persistent storage if it's not already in the memory

Natan Vivo

@nvivo

I think you can do exactly that with actorselection to send messsages. But Akka cannot start actors by itself only by the path

Nikita Tsukanov

@kekekeks

can do exactly that with actorselection

Nope, ActorSelection does exactly the opposite

Natan Vivo

@nvivo

Roger Johansson

@rogeralsing

ah you want to "intercept" the path and then start actors that arent started, right?

Natan Vivo

@nvivo

Exactly that = use /path/to/manyactors/*

Nikita Tsukanov

@kekekeks

Yup

Roger Johansson

@rogeralsing

like a proxy

Nikita Tsukanov

@kekekeks

exactly

If you have, like, 1KK entities it would take a lot of time to load them from the storage

Roger Johansson

@rogeralsing

imo, easiest way, make a proxy that acts like the consistent hash router. but with the ability to start actors also

all messages goes to the same actor, and then use a property of the messages to identify what child to route to

Natan Vivo

@nvivo

This looks like the concept from orleans right?

Nikita Tsukanov

@kekekeks

So I'm stuck with old pattern of having ISmthManager that asks you for an id of that something in every call

meh

Quite kills the idea of just passing ActorRef around

Natan Vivo

@nvivo

I think you can do that with rogers idea

Ask a single actor for a message that contains an actorref

Let that single actor give you the reference somehow

Nikita Tsukanov

@kekekeks

And then be unable to unload that actor after inactivity timeout

but might just work in most cases

Since having an actor is cheap anyway

Natan Vivo

@nvivo

You can unload with SetTimeout and watch in the parent

Roger Johansson

@rogeralsing

Akka does not support the concept of virtual actors, we follow the JVM impl, they are looking into that on their side.. but as of now, there is no "on demand" activation of actors

Nikita Tsukanov

@kekekeks

Yup. Ask the parent for the reference, timeout expired, actor died, ActorRef is void

So these "ondemand" actors should live forever

Is it actually a good idea to have an actor for every entity in the system?

Natan Vivo

@nvivo

This is the orleans concept, akka is different. But both can achieve similar results. Looks like you want a specific solution, not a specific goal

Nikita Tsukanov

@kekekeks

Or just go with instances of UserManagerActor routed via consistent hash

Roger Johansson

@rogeralsing

depends on its responsibillities, if the actor is a heart beat creator for a heart machine, i'd say yes :) if it's a business entity / aggregate root, then no

Natan Vivo

@nvivo

Honestly I have a hard time to see the benefit of the virtual actor model for regular services.

Nikita Tsukanov

@kekekeks

I want to try event sourcing, so I'll need to have a PersistentActor for everything

just not sure that it should be exposed to the system or just incapsulated inside the parent that manages its lifetime

Natan Vivo

@nvivo

You don't necessarily need every entity of your system to be a persistent actor to do event sourcing, that's the point

This is a design choice

Nikita Tsukanov

@kekekeks

If entities are incapsulated inside SmthManagerActor it's just implementation detail.