blackroad-tools/templates/TEMPLATE-002-ARCHITECTURE-OVERVIEW.md

╭━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╮ │ 🛣 <CTX_EMOJI> BLACKROAD OS · <SYSTEM / ARCH NAME> │ ╰━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╯

🧭 Overview ──────────────────────────────────────────────────────────── <2–5 lines: What this system is, who it serves, and why it exists.> Example:

• Serves: (👤 / 👥)
• Core job:
• Scope: <boundaries / what it is NOT>

🏗 High-Level System Diagram ────────────────────────────────────────────────────────────

              👤 Users / Clients
                   │  (https)
                   ▼

╭────────────────────────────────────────────────────────────╮ │ ⛅️ Edge / Gateway (Cloudflare Workers / Router) │ │ - Routing, auth checks, rate limiting │ ╰───────────────┬─────────────────────────────┬──────────────╯ │ │ ▼ ▼ 🛰 Service A 🛰 Service B (API / Unified API) (Web / Pages / UI) │ │ └──────────────┬──────────────┘ ▼ 🧱 Databases 📨 Queues 🗂 Storage (R2 / KV)

<Adjust the boxes/lines to match your exact topology.>

📦 Component Breakdown ────────────────────────────────────────────────────────────

⛅️ Edge / Gateway

• Type: <Worker / Router / CDN>
• Responsibilities:
  • <bullet 1>
  • <bullet 2>
• Key resources:
  • 📦
  • 🔑 <secret / binding>
  • 🌐 <domains / routes>

🛰 Core Services

• Service A (🛰 )
  • Purpose:
  • Interfaces: <HTTP/WS/queues/etc.>
  • Talks to: <DBs, queues, other services>
• Service B (🛰 )
  • Purpose: ...
  • Interfaces: ...

🧱 Data Layer

• Databases (🧱)
  • – ,
• Queues (📨)
  • –
• Storage (🗂 / R2 / KV)
  • <Bucket / KV namespace> –

🧩 External Integrations

• Stripe (💳)
  • Used for: <billing/payments>
• Auth provider (🔐)
  • Used for: <authN/authZ>
• Other (🧩)
  • –

👉 Request / Data Flows ────────────────────────────────────────────────────────────

Flow 1 – User Request

1. 👤 User → 🌐 (e.g. https://...)
2. 🌐 DNS → ⛅️ Edge (Cloudflare)
3. ⛅️ Edge → 🛰 Service A (unified API)
4. 🛰 Service A → 🧱 DB / 📨 Queue / 🗂 Storage
5. Response travels back ⛅️ → 👤

Flow 2 – Background Processing

1. 🧱 DB / 📨 Queue event occurs
2. 🛰 Worker / cron picks it up
3. 🧠 Optional 🤖 AI/LLM processing
4. Results written to 🧱 / 🗂 / 📊

Flow 3 – Admin / Dashboards

1. 👩‍💻 Operator → 🖥 Dashboard
2. Dashboard calls ⛅️ Edge → 🛰 Admin API
3. Observability from 📊 Metrics / 🧾 Logs

🔐 Reliability, Security & Limits ────────────────────────────────────────────────────────────

Reliability

• Target: <e.g. 99.9% uptime>
• Single points of failure:
• 🧯 Fallback / degradation strategy:

Security

• Auth (🔐): <how users/clients authenticate>
• Secrets (🔑):
• Data protection: <encryption at rest / in transit>

Limits & Quotas

• Request limits: <Cloudflare free tier, etc.>
• Storage limits: <R2 / KV / D1 limits>
• Scaling behavior:
  • ⛅️ Edge: <auto / manual>
  • 🛰 Services: <horizontal/vertical>

(Reference to specific Cloudflare docs / constraints if relevant.)

🧰 Operations: Deploy, Observe, Debug ────────────────────────────────────────────────────────────

Deploy (🚀)

• Primary script / command:
  • ./<deploy-script>.sh
• Manual steps (if any):
  • ☐ <step 1>
  • ☐ <step 2>

Observe (📊 / 🧾)

• Metrics (📊):
  • – e.g. dashboard URL
• Logs (🧾):
  • wrangler tail <worker-name>
  • <other log sources>

Debug (🔍 / 🕵️)

• Common failure modes:
  • → →
• Incident severity mapping (🚨):
  • <what counts as Sev1 / Sev2, etc.>

📚 Documentation & References ────────────────────────────────────────────────────────────

📚 System Docs

• Overview: <FILE_OR_URL>
• API Reference: <FILE_OR_URL>
• Runbooks: <FILE_OR_URL>

🗒 Checklists

• Deploy checklist: <FILE_OR_URL>
• Onboarding checklist: <FILE_OR_URL>

🎯 Next Steps

• <Step 1: what reader should do first>
• <Step 2: where to go deeper>
• <Step 3: optional advanced topic>

💡 Tips

• <Tip 1: e.g. "If X happens, check Y first">
• <Tip 2: e.g. "Prefer Z pattern when adding new services">