Sprint 06 Release Notes

Table of Contents

December 2025

This sprint delivered critical stability and architectural upgrades for the comms layer, successfully implementing graceful server shutdown and establishing foundational services for feature flagging and event-driven architecture, alongside initial progress on domain entity definition.

✅ Highlights

  • Server Stability: Implemented graceful session cancellation and shutdown, resolving a critical issue where the server would hang on shutdown by shifting from a flawed hierarchical cancellation model to explicit session management.
  • Comms Reliability: Added a client heartbeat mechanism to proactively detect and report server disconnections, significantly improving client-side user experience and error handling.
  • Architectural Refactoring: Created the new Variability Service for feature flags and successfully moved its messaging infrastructure from ores.accounts, ensuring clear domain ownership.
  • Event Infrastructure: Integrated Listen/Notify support and implemented a generic Event Bus to enable decoupled, asynchronous communication across services.

🛠️ Key Improvements

Architecture & Core Services

  • Variability Domain: Created the ores.variability service interface for feature flags and moved related messaging (types 0x200D=/=0x200E moved to 0x3000=/=0x3001).
  • Context Simplification: Removed bootstrap mode logic from the application context.
  • Comms Handshake: Encapsulated connection logic into a dedicated Handshake Service for consistency.
  • Protocol Refactoring: Split the monolithic protocol.hpp into smaller, component-based files.
  • Database: Added a Postgres listener and implemented logic for the server to check database connectivity on startup.

Entity Management & Generation

  • Added a version attribute to all domain entities for future migration and validation logic.
  • Completed an initial Experiment with simple code generation to inform the upcoming entity templatisation mission.
  • Addressed minor Entity syntax refactor snags.

Technical Debt & Polish

  • Refactored logging to use std::string_view to improve performance and fixed resulting issues (including Fix issues with logging after string_view change and Valgrind leaks).
  • Improved testing by adding coverage visualization to diagrams.

⚠️ Known Issues & Postponed

None.

📊 Time Summary

  • Total effort: not tracked
  • PRs merged: not tracked
  • Sprint duration: 2025-12-01 → 2025-12-13

Next sprint: Sprint 07.

Emacs 29.1 (Org mode 9.6.6)