osstotalsoft/nbb
This system is a .NET framework (NBB) that provides a comprehensive infrastructure for building event-driven, microservices-based applications. It offers core abstractions for domain modeling, event sourcing, and messaging, with explicit support for both C# and F# development styles. The framework facilitates multi-tenancy, process orchestration, and functional side-effect handling, enabling developers to construct complex, scalable architectures with built-in support for distributed tracing and logging.
39.1
Weak · 3 August 2026
16k
lines of production code
C#
with F#
2
bus factor · 22 authors in all
2
measurements over time
How it got here
2019 · Microservices and Event Sourcing
This period focused on establishing the foundational architecture for the NBB framework, introducing core abstractions for domain modeling, event sourcing, and messaging. It also added comprehensive sample applications for microservices and monoliths, alongside extensive unit and integration tests to validate the new components.
67 changes
2020–2021 · Multi-tenancy and F# functional support
This period focused on expanding the framework's multi-tenancy capabilities, introducing a comprehensive tenant identification and context management system across HTTP, messaging, and hosting layers. Simultaneously, significant functional programming support was added, including F# libraries for effects, events, and the mediator pattern, alongside new samples and projections.
43 changes
2022–2023 · Multi-tenancy and observability infrastructure
This period focused on implementing multi-tenancy configuration support and enhancing observability through OpenTelemetry integration. The team added features for tenant-specific settings, Serilog enrichers, and distributed tracing for messaging systems, while also introducing a DotEnv configuration provider and JetStream transport support.
10 changes
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About this page
- The description of this project is derived from its own commit history, not from its README.
- The score is its highest published measurement, taken on 3 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
- Measured at commit a1a5aacd24 — the exact code this score is about.
- Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.