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namely/chief-of-state

Chief of State is an event-sourced service that manages entity state using Akka Cluster Sharding and Akka Persistence. It exposes a gRPC interface for remote commands and events, while handling database schema migrations and read-side processing via a distributed handler architecture. The system is configured through structured configuration files and supports distributed tracing via OpenTelemetry.

41.6

Weak · 4 August 2026

3.5k

lines of production code

Scala

primary language

2

bus factor · 18 authors in all

3

measurements over time

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How it got here

2020 · Initial project structure and core implementation

This period established the foundational architecture for the Chief of State service, including the multi-module build system, gRPC interfaces, and event-sourced core logic. It also introduced comprehensive test coverage and configuration models to support the new service implementation.

11 changes

2021 · database migration framework and read-side refactoring

This period focused on implementing a comprehensive database migration framework for Chief of State, introducing versioned schema upgrades for journals, snapshots, and read-side offsets. Concurrently, the read-side processing architecture was refactored to support remote handlers via gRPC, enabling distributed state updates.

15 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 4 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 67a76d096c — the exact code this score is about.
  • Scored under rubric rubric-2026.08.19. Score the same commit under that rubric and you get the same number.
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