🏗️ Architecture: How to build observability dashboard for the platform?

Date: 2026-02-26
Time: 16:18:43 UTC
Session: gspace1-144.4
Agent: angular
Confidence: 90%
Status: ✅ Documented

📋 Decision Context

Question:

How to build observability dashboard for the platform?

Task: Add observability dashboard (Gap 11)

🎯 Decision Made

Chosen:

Backend ObservatoryService aggregates health from all 4 backends with 30s cache, LlmCostTrackerService tracks 24h rolling window, ObservatoryController serves JSON dashboard + Prometheus metrics. Frontend ObservatoryDashboardComponent polls every 30s.

Options Considered:

• No alternatives documented

💭 Reasoning

In-memory approach avoids new MongoDB schema overhead. 30s health cache prevents hammering backends. Prometheus text format enables future Grafana/AlertManager integration. Frontend tab system extends existing observatory page without breaking Chrome extension embedding.

📁 Files Involved

• APIs/backend-ai-api/src/app/infrastructure/services/observatory.service.ts
• APIs/backend-ai-api/src/app/infrastructure/services/llm-cost-tracker.service.ts
• APIs/backend-ai-api/src/app/infrastructure/controllers/observatory.controller.ts
• libs/libs-ai/gograb-ai-lib/src/lib/components/observatory-dashboard/observatory-dashboard.component.ts
• libs/libs-ai/gograb-ai-lib/src/lib/services/observatory-data.service.ts
• apps/gograb-ai/src/app/pages/observatory/observatory-page.component.ts

🔗 Related

• Decision ID: dev_1772122723633_reubyc9
• Session: 144
• Workspace: gspace1

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