Canonical actor model implementation for .NET with local + distributed actors in C# and F#. Apache 2.0 licensed and free to use. https://xitter.cf/t.co/iH2PkLRLHA
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Joined February 2014
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A fixed Akka.NET CVE offers a useful design lesson: keep Akka.Remote on private networks, and use mTLS when traffic crosses trust boundaries. Add hostname validation or pinning when the threat model requires it.
petabridge.com/blog/akka-net…
Akka.NET retweeted
So @AkkaDotNET v1.6 is already an order-of-magnitude improvement for networking and serialization performance over v1.5, but the next beta of it is about to be even faster:
Looking at about a ~20% throughput improvement across the board and significant reductions in CPU / mem resources per message.
All from simple mechanical fixes plus some experimental IActorRef compression on the receiving side of the wire.
ALT Akka.NET v1.6.0-beta4 vs 1.6.0-beta3 throughput numbers
ALT Akka.NET v1.6.0-beta3 vs. v1.6.0-beta4 CPU per message
Kafka consumers must coordinate in-flight work, offset commits, and partition revocation. Akka.Streams.Kafka layers stream backpressure and committable offsets over Confluent.Kafka so those concerns stay in one pipeline.
petabridge.com/blog/akka-str…
“Unreachable” does not mean “removed” in Akka.NET. A busy process or short network partition may recover. Give partitions time to heal, then let a split-brain strategy decide when a member must be downed.
petabridge.com/blog/proper-c…
Akka.NET retweeted
Had a customer try out @AkkaDotNET v1.6 in their high-performance app today and report several different performance / code-generated serializer issues their agents found while exercising it.
The rate at which we can improve software now is just incredible
Kubernetes rollouts can trigger repeated shard rebalances. Petabridge recommends Deployments with `maxSurge: 1` and `maxUnavailable: 0` for new Akka.NET projects, bringing up a replacement before removing the old pod.
petabridge.com/blog/akkadotn…
With Akka.Cluster.Sharding, callers send to an entity ID instead of tracking a node address. Sharding locates or starts that entity and can redistribute its shard as cluster membership changes.
petabridge.com/blog/distribu…
An Akka.NET actor can use `Become` to change which messages it handles in each state. Pair it with `IStash` to defer requests that aren’t valid yet, then unstash them when the actor returns to a ready behavior.
petabridge.com/blog/akka-act…
Akka.NET 1.5.73 is out. Important fixes for cluster extension startup and Cluster.Sharding. Plan your upgrade:
github.com/akkadotnet/akka.n…
ALT Akka.NET 1.5.73 release announcement card: Important fixes for Akka.NET clustering
Akka.Quartz.Actor 1.5.71-beta1 moves Quartz 3 to 4. It's .NET 10 only and breaking. This is a prototype — we want to validate the migration path before calling it production-ready. Try it and tell us what breaks.
github.com/akkadotnet/Akka.Q…
ALT Akka.Quartz.Actor 1.5.71-beta1: Quartz 3 to 4 migration. .NET 10 only—a breaking upgrade. Binary job data needs conversion. Rehearse on a backup first. Step-by-step guide included.
v1.6 is out and ready for some testing
Going to do a for real post on this soon, but late last night we shipped @AkkaDotNET v1.6-beta1
This includes:
- Full AOT support for core Akka, Hosting, Streams
- Source-generated serialization + System.Memory-powered primitives for it + all I/O
- Artery.Tcp - need to re-benchmark it since Iast posted about it but TL;DR; it can do 1.6m msg/s over a single connection, and these are REAL message payloads, not byte arrays or strings.
I've already validated the AOT support in a live application that consumes Akka + Akka.Streams - works great so far. Going to deploy that later today.
Akka.NET retweeted
Going to do a for real post on this soon, but late last night we shipped @AkkaDotNET v1.6-beta1
This includes:
- Full AOT support for core Akka, Hosting, Streams
- Source-generated serialization + System.Memory-powered primitives for it + all I/O
- Artery.Tcp - need to re-benchmark it since Iast posted about it but TL;DR; it can do 1.6m msg/s over a single connection, and these are REAL message payloads, not byte arrays or strings.
I've already validated the AOT support in a live application that consumes Akka + Akka.Streams - works great so far. Going to deploy that later today.
A read-only property doesn’t make an Akka.NET message immutable if it still points to a mutable collection. Copy mutable state into a new array or immutable structure before sending it. This prevents cross-actor side effects.
petabridge.com/blog/how-to-d…
If you use Akka.Persistence.Azure, upgrade to 1.5.71 now.
It fixes two snapshot-store bugs that could use the wrong sequence number during recovery and potentially cause missing data.
Release notes: github.com/petabridge/Akka.P…
ALT Akka.Persistence.Azure v1.5.71 release graphic: Critical fixes for Akka.Persistence.Azure. Prevents stale or incorrect snapshots from affecting actor recovery. The release reads every blob-listing page and matches only the exact persistence ID.
Akka.NET retweeted
It's your time to shine @AkkaDotNET
Akka.NET retweeted
New live Akka.NET training dates are available for Q4.
Join instructor-led sessions on Akka.Streams, Akka.Cluster, and end-to-end application design.
See the full calendar and reserve your spot:
petabridge.com/training/?utm…
ALT Petabridge Q4 2026 live Akka.NET training calendar. Upcoming sessions include Akka.Streams on October 13, Akka.Cluster on October 22, and end-to-end application design on November 3, with more sessions through December 3.
Akka.NET retweeted
New Video / Blog Post: "Run Local Akka .NET Clusters with .NET Aspire"
The biggest win here is that debugging / orchestrating a cluster is trivial now thanks to Aspire + Akka .Management.
Links in next post.
ALT Akka.NET Aspire AppHost example
Akka.NET retweeted
Codex proposes adding locking, status flags, and a bunch of shared-task coordination inside a hosted service for doing skill sync in Netclaw.
Me: "you know we have access to Akka .NET actors right? Just use those."
* Removed 318 total LOC
* Eliminated several failure classes
* Made the code readable and understandable
You should be using actors more. Your agents should be using them more.
ALT SkillSync Akka.NET actor - powers Netclaw's ability to synchronize remote skill feeds
Akka.NET retweeted
Akka .NET 1.5.71 is out.
This maintenance release includes targeted fixes for Cluster Sharding recovery, remoting, TestKit / multi-node testing, and ClusterClientDiscovery.
If you’re running any of those components, review the notes and plan the upgrade:
github.com/akkadotnet/akka.n…
ALT Akka.NET 1.5.71 maintenance release. Fixes for Cluster Sharding recovery, remoting, TestKit and multi-node testing, and ClusterClientDiscovery.