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[Component Name]¤

Type: [Service | Library | Database | External System]

Status: [Active | Deprecated | Experimental]

Owner: [Team/Individual]

Last Updated: [YYYY-MM-DD]

Overview¤

[High-level description of the component's purpose and role in the system. Include:]

  • Primary responsibility
  • Key capabilities
  • Position in the overall architecture

Architecture¤

[Include a Mermaid diagram showing the component's position and relationships]

graph TB
    %% Component architecture diagram
    classDef component fill:#e1f5fe,stroke:#01579b,stroke-width:2px
    classDef external fill:#fff3e0,stroke:#e65100,stroke-width:2px
    classDef data fill:#e8f5e8,stroke:#2e7d32,stroke-width:2px

    Component[Component Name]:::component
    Service1[Related Service]:::component
    Database[(Database)]:::data
    External[External API]:::external

    Service1 --> Component
    Component --> Database
    Component --> External

Key Concepts¤

  • [Concept 1]: Brief explanation
  • [Concept 2]: Brief explanation
  • [Concept 3]: Brief explanation

Configuration¤

Environment Variables¤

Variable Required Default Description
CONFIG_NAME Yes - Purpose and expected values
OPTIONAL_CONFIG No default Optional configuration

Example Configuration¤

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# docker-compose.yml or configuration file
component:
  config_name: "production_value"
  optional_config: "custom_value"
  nested:
    option: true

API Reference¤

Endpoints (if applicable)¤

GET /api/endpoint¤

Description: What this endpoint does

Parameters: - param1 (string, required): Description - param2 (integer, optional): Description

Response: 

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{
  "status": "success",
  "data": {
    "result": "example"
  }
}

Events (if applicable)¤

component.event.name¤

Triggered when: Condition that triggers this event

Payload: 

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{
  "eventType": "component.event.name",
  "timestamp": "2024-01-01T00:00:00Z",
  "data": {
    "key": "value"
  }
}

Integration Points¤

Dependencies¤

  • [Service/Component Name]: Why it's needed and how it's used
  • [Database Name]: Data stored and access patterns
  • [External API]: Integration purpose and fallback behavior

Dependent Services¤

  • [Service Name]: How this service depends on our component
  • [Another Service]: Integration details

Monitoring & Observability¤

Key Metrics¤

  • component_requests_total: Total requests processed
  • component_errors_total: Error count by type
  • component_duration_seconds: Request duration histogram

Health Checks¤

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# Health check endpoint
curl http://localhost:PORT/health

# Expected response
{
  "status": "healthy",
  "checks": {
    "database": "ok",
    "external_api": "ok"
  }
}

Logs¤

Key log events and their formats:

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{
  "level": "info",
  "timestamp": "2024-01-01T00:00:00Z",
  "component": "component-name",
  "message": "Operation completed",
  "metadata": {
    "operation_id": "uuid",
    "duration_ms": 150
  }
}

Development¤

Local Development¤

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# Clone and setup
git clone [repository]
cd component-name
npm install

# Run locally
npm run dev

# Run tests
npm test

Testing Strategy¤

  • Unit Tests: Component logic and business rules
  • Integration Tests: Database and external API interactions
  • Contract Tests: API endpoint contracts

Deployment¤

Build Process¤

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# Dockerfile example
FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
EXPOSE 3000
CMD ["npm", "start"]

Environment-Specific Notes¤

  • Development: Special configuration or setup
  • Staging: Differences from production
  • Production: Critical deployment considerations

Troubleshooting¤

Common Issues¤

Issue: [Problem Description]¤

Symptoms: - Error messages or behaviors - When it typically occurs

Diagnosis: 

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# Commands to diagnose the issue
kubectl logs component-name
curl -v http://localhost:PORT/health

Resolution: 1. Step to resolve 2. Configuration change needed 3. Restart procedure if required

Performance Issues¤

  • High CPU Usage: Likely causes and solutions
  • Memory Leaks: Detection and mitigation
  • Slow Responses: Optimization strategies

Security Considerations¤

  • Authentication: How the component authenticates
  • Authorization: Permission model
  • Data Protection: Sensitive data handling
  • Network Security: Firewall rules and encryption

Runbooks¤

Scaling¤

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# Horizontal scaling
kubectl scale deployment component-name --replicas=5

# Vertical scaling considerations
# Update resource limits in deployment config

Backup & Recovery¤

  • Data Backup: What data needs backing up
  • Recovery Process: Steps to restore from backup
  • RTO/RPO: Target recovery time and data loss limits

Template Usage¤

  1. Copy this template to docs/architecture/components/
  2. Rename with component name: [component-name].md
  3. Fill in all relevant sections (remove sections that don't apply)
  4. Add diagrams showing component relationships
  5. Test all code examples and commands
  6. Add to navigation in mkdocs.yml
  7. Submit for review (architecture components require review)