#038

Purpose
 To improve backend queue stability during concurrent gameplay activity, continue refining achievement synchronization reliability, and reduce inconsistencies between match completion and player progression systems.

Key Highlights

🏅 Achievement Sync Reliability Improvements

• Refined achievement-processing flow for matches ending through reconnect recovery and timeout resolution.
• Improved synchronization between stat reconciliation jobs and achievement unlock validation.
•  Reduced occurrence of temporary “locked/unlocked” state flickering within dashboard achievement views.

🔄 Queue Stability & Event Handling Updates

•  Adjusted retry timing logic for asynchronous match-processing queues to reduce unnecessary event duplication.
• Improved handling of delayed settlement events during short-lived backend response spikes.
•  Queue workers now perform additional verification before re-processing partially completed match events.

📊 Stats Consistency Enhancements

• Additional validation checks added between match history records and aggregated dashboard stats.
• Reduced mismatch frequency between displayed match counts and backend-confirmed totals.
• Improved refresh consistency for player dashboards after consecutive rapid matches.

⚙️ Monitoring & Operational Visibility

•  Expanded Grafana monitoring coverage for queue-processing latency and delayed stat writes.
• Added internal alert thresholds for repeated reconciliation failures within short time windows.
• Improved backend logging around timeout-based match closures for easier issue tracing.

Why It Matters

• Stable queue processing is critical for maintaining accurate match results, rankings, and player progression.
•  Improved synchronization between stats and achievements reduces user-facing inconsistencies.
• Better monitoring visibility helps identify backend bottlenecks earlier while keeping infrastructure manageable for a small development team.

Open Issues

• Achievement unlock timing can still vary during sustained tournament-style activity simulations.
• Some queue retry edge cases remain under unstable connection conditions.
• Dashboard refresh synchronization between multiple active sessions/devices requires additional refinement.

Fixed

• Reduced duplicate queue-processing attempts triggered after delayed backend acknowledgements.
• Resolved issue where certain timeout-completed matches were not immediately reflected in player stats.
• Improved consistency of achievement state refresh after reconnect-based match recovery.

Next Steps

• Continue refinement of queue retry balancing during concurrent activity spikes.
• Further optimize stat reconciliation timing after rapid match completions.
• Expand monitoring coverage for reconnect-driven edge cases and delayed settlements.
• Begin limited internal testing for broader achievement category rollout stability.