Akka.NET

Canonical actor model implementation for .NET with local + distributed actors in C# and F#. Apache 2.0 licensed and free to use.

[Aaron Stannard @Aaronontheweb]

Making some progress on source-generated serialization for @AkkaDotNET on this PR, one of the big milestones for v1.6 https://t.co/rN9KUjytKF

Will improve security, reliability, performance, and the developer experience all in the same pass

[Aaron Stannard @Aaronontheweb]

Used FsCheck to find an extremely hard to reproduce bug in @AkkaDotNET 's CRDT + replication system.

Basically required node restarts, out of order gossip stemming from the reboot, etc.

Writing these by hand was ALWAYS laborious and a pain - LLMs make it so much cheaper to do.

[Petabridge @petabridge]

🔭 @AkkaDotNET Community Standup tomorrow (Wed May 13 12pm Chicago Time)

"End-to-end distributed tracing for Akka.Streams"

1.5.66 ships an `"Akka.Streams"` ActivitySource that propagates trace context through your stream graphs; we cover that and more.

[Petabridge @petabridge]

Sorry folks - had to cancel our "End to End @AkkaDotNET " training today due to persistent audio issues with GoToWebinar. We've booked a make-up date for this Thursday at 11am Chicago Time.

https://t.co/01y7aMtapC

[psmon @webnori]

Actor + AgentLoop = a composable agent
The Actor model (Hewitt, 1973) gives you encapsulated state, single-threaded message processing, and supervised lifecycles. An agent loop needs all three — a scratchpad that won't tear under concurrency, one tool call at a time, and a parent who can cancel or reset it. AgentZero Lite wires https://t.co/ZYgXaxJusJ actors directly to LLamaSharp / OpenAI-compatible loops to get those properties without re-inventing them.

more : https://t.co/WKLUsbClvA

[Aaron Stannard @Aaronontheweb]

Had to revert one of our changes in @AkkaDotNET v1.5.66, the Task.Yield change to Akka.Persistence that moved serialization onto a background thread.

It had great performance numbers but it compromised the way some of our persistence plugins worked internally and correctness always beats performance.

This has been addressed in v1.5.67

[Aaron Stannard @Aaronontheweb]

Used Netclaw to fix a DNS resolution bug inside @AkkaDotNET 's networking stack using Qwen3.6

Not bad for a local model (and a harness I rolled from scratch)

https://t.co/QPUjHdpPaE

[Aaron Stannard @Aaronontheweb]

Adding OTEL Tracing to @AkkaDotNET streams so you can visualize graph + workflow shape.

Tested against a lot of different graph combinations and it works great so far.

[Aaron Stannard @Aaronontheweb]

New Blog Post / Video: "Managing Long-Running Tasks Inside @AkkaDotNET Actors"

When we're syncing a new @TextForgeApp user with 15+ years of inbox history with over 100k emails, this is how we do that reliably + efficiently using actors.

Read: https://t.co/lVIJzyM9hK

[Petabridge @petabridge]

New @AkkaDotNET Release - v1.5.65

- Fixed 3 Akka.Cluster.Sharding bugs that could cause problems during rolling restarts (usually with leases enabled)
- Fixed xUnit3 implicit `TestActor` issues in the TestKit
- Fixed a decade old configuration bug in core Akka

[Petabridge @petabridge]

After 11 years, we decided it was time for a fresh look for the Petabridge website. Now with dark mode for Akka .NET Bootcamp and all of our blog posts too.

[Petabridge @petabridge]

Our new @AkkaDotNET training calendar for Spring 2026 is live! See the 📅in next post

[Akka.NET @AkkaDotNET]

Full release notes here: https://t.co/hDOoGjunOE

[Akka.NET @AkkaDotNET]

Important Akka .NET release today, v1.5.63

- Adds Xunit3 support to our testkits
- IMPORTANT: fixed an old Akka.Remote bug that is probably responsible for the vast majority of quarantines. This is an important stability fix!

[Petabridge @petabridge]

Probably the most entertaining show and tell we've done for an Akka .NET Community Standup: "Grimmloch - Building an AI-Powered MMO with @AkkaDotNET "

https://t.co/RowhK4Bmti

[Aaron Stannard @Aaronontheweb]

Welp, @AkkaDotNET Cluster.Sharding passivization was responsible for a very weird bug in @TextForgeApp I'd been scratching my head over.

Been wondering why my account showed as "not synced" for two days and why I wouldn't get Slack notifications sometimes.

Turns out, syncing a big inbox takes longer than the default 2 minute automatic passivization timeout - and the actor that runs that job could never quite finish on-time.

[Petabridge @petabridge]

Don't miss our community standup on Wednesday - "Grimmloch - Building an AI-Powered MMO with @AkkaDotNET "

Learn how tools like Akka Persistence, Cluster.Sharding, and more all play a pivotal role in making games re-entrant, horizontally scalable, and fun!

🔗in next post

[Petabridge @petabridge]

Phobos 2.11 is now live on @getsdkbin - big feature in this release is we've finally deprecated "append logs to trace" because log / trace correlation now works naturally via Akka .NET Hosting 1.5.60 and later.

No more "double logs" and other annoyances

[Akka.NET @AkkaDotNET]

Working on getting Akka .Hosting and Akka .Management releases out the door shortly

[Akka.NET @AkkaDotNET]

Akka .NET v1.5.61 is now live on NuGet. Lots of fixes in this release:

- [IMPORTANT] multiple edge-case Cluster.Sharding bugs
- Fixed 2 Akka.Cluster edge-case bugs - and more

See the full release notes here: https://t.co/unk9HLH854