📊 Langfuse Metrics Board

graph TD
    %% Define Styles
    classDef default fill:#1e1e2e,stroke:#cdd6f4,stroke-width:2px,color:#cdd6f4,font-family:monospace;
    classDef header fill:#89b4fa,stroke:#11111b,stroke-width:3px,color:#11111b,font-weight:bold,font-size:18px;
    classDef metric fill:#313244,stroke:#a6adc8,stroke-width:2px,color:#cdd6f4;
    classDef performance fill:#313244,stroke:#f38ba8,stroke-width:2px,color:#f38ba8;
    classDef build fill:#313244,stroke:#a6e3a1,stroke-width:2px,color:#a6e3a1;

    %% Nodes
    Title["📋 RELEASE METRIC BOARD"]
    
    subgraph Quality_Metrics["Quality & Performance"]
        Latency["📈 AVG LATENCY: --.-%"]
        ErrorRate["💥 ERROR RATE: --.-%"]
    end

    subgraph Build_Metrics["Bundle & Compilation"]
        BundleSize["📦 TOTAL BUNDLE: - v4 Rewrite"]
        BuildTime["⚙️ BUILD TIME: --.-s"]
    end

    %% Connections/Layout
    Title --> Quality_Metrics
    Title --> Build_Metrics

    %% Apply Classes
    class Title header;
    class Latency,ErrorRate performance;
    class BundleSize,BuildTime build;

📈 PERFORMANCE

• Batch Processing Latency: Optimized -> Task-Managed — Async processing offloaded to custom _task_manager queue architecture.
• OpenAI / Langchain Wrapper Latency: Negligible overhead — Low-overhead decorators and patching structures inside openai.py and langchain/.

📦 FOOTPRINT

• langfuse: v3 -> v4 (Major Upgrade) — Total SDK overhaul in March 2026 optimizing imports, directory layout, and modernizing async HTTP utilities.
• Dependencies: Lightweight -> uv.lock locked — Minimal dependency footprint managed via uv package manager.

💥 STABILITY

• Test Coverage: High — Split into unit/ testing and multi-shard integration testing via select_e2e_shard.py.
• Typing Compliance: Fully Typed — Validated by py.typed marker for integration safety.

🚨 GOTCHAS

• v4 Breaking Changes: Major rewrite released March 2026. Manual code updates required. Follow the official v4 migration guide to prevent runtime breaks when upgrading from v3.