Summary
Welcome to the February 2026 Akka.NET Community Standup! Since our last meetup on January 23rd, we've had 4 core releases and 20+ ecosystem releases across the Akka.NET ecosystem with major observability improvements and critical bug fixes:
Key Highlights:
- 🔗 OpenTelemetry Trace Correlation: Akka.Hosting 1.5.60 bridges the gap between actor logs and distributed traces -
Activity.Current now flows across mailbox boundaries
- 📝 Logging Context Enrichment: v1.5.60 adds
WithContext() and BeginScope() for structured logging scopes in actor code
- 🐛 Critical Cluster Fix: v1.5.59 fixes gossip serialization failure ("Unknown address in cluster message") when members leave
- ⚡ Persistence Fixes: DeferAsync nesting bug, AwaitAssertAsync timeout, and Inbox.AwaitResult exception handling all fixed
- 🔧 MongoDB Performance: Fixed BSON serializer lock contention causing high CPU during concurrent persistence
- 📊 Phobos 2.10.5: Memory allocation fix for stash/unstash span events
Looking Ahead:
- v1.6 development: 32 open / 20 closed issues in milestone
- Serialization PoC prototype for v1.6
- .NET Aspire integration plugin for Akka.NET
Join us as we discuss these updates, share future plans, and showcase community projects!
Recent Akka.NET Releases (since January 23, 2026)
Akka.NET v1.5.59 - January 27, 2026
Critical Bug Fixes
- [ ] Fixed cluster gossip serialization failure (#8011) - Fixes #8009. Resolves "Unknown address in cluster message" error when
Seen table contained addresses of members that had already left the cluster.
- [ ] Fixed logger initialization continuation race in LoggingBus (#8006)