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Documentation Index

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Microservices Examples

RFC Status: This section contains proposed examples for the OpenDocs Specification RFC.These examples are provided to illustrate how the specification could be implemented. Provide feedback to help refine these examples.

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Microservices Architecture

This example demonstrates how to document a microservices architecture with cross-service references and performance optimization for large codebases.

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Project Structure

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opendocs.json Configuration

{
  "documentationSet": {
    "id": "acme-microservices-docs",
    "name": "Acme Microservices Documentation",
    "description": "Microservices architecture documentation",
    "version": "1.0.0",
    "created": "2024-01-01T00:00:00Z"
  },
  "projects": [
    {
      "id": "user-service",
      "name": "User Service",
      "language": "go",
      "version": "1.2.0",
      "location": {
        "type": "file",
        "path": "services/user-service.json",
        "format": "json"
      }
    },
    {
      "id": "billing-service",
      "name": "Billing Service",
      "language": "typescript",
      "version": "2.1.0",
      "location": {
        "type": "file",
        "path": "services/billing-service.json",
        "format": "json"
      }
    },
    {
      "id": "notification-service",
      "name": "Notification Service",
      "language": "rust",
      "version": "0.8.5",
      "location": {
        "type": "file",
        "path": "services/notification-service.json",
        "format": "json"
      }
    },
    {
      "id": "api-gateway",
      "name": "API Gateway",
      "language": "typescript",
      "version": "1.5.2",
      "location": {
        "type": "file",
        "path": "services/api-gateway.json",
        "format": "json"
      }
    }
  ],
  "navigation": {
    "title": "Microservices API",
    "groups": [
      {
        "name": "Core Services",
        "projects": ["user-service", "billing-service"]
      },
      {
        "name": "Support Services",
        "projects": ["notification-service"]
      },
      {
        "name": "Infrastructure",
        "projects": ["api-gateway"]
      }
    ]
  }
}

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Cross-Service References

The billing service demonstrates how to document dependencies on other services: 
{
  "project": {
    "id": "billing-service",
    "name": "Billing Service",
    "language": "typescript",
    "items": {
      "format": "jsonl",
      "file": "billing-service-items.jsonl",
      "count": 203
    },
    "metadata": {
      "dependencies": [
        { "project": "user-service", "ref": "../user-service/user-service.json" },
        { "project": "notification-service", "ref": "../notification-service/notification-service.json" }
      ],
      "externalApis": ["Stripe API", "PayPal API"]
    }
  }
}

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Performance Optimization Examples

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Large Codebase with Streaming

For enterprise platforms with tens of thousands of documented items, use streaming and chunked processing: 
{
  "workspace": {
    "id": "enterprise-platform",
    "name": "Enterprise Platform",
    "description": "Large enterprise platform with 50k+ documented items",
    "navigation": {
      "projects": [
        { "id": "core", "name": "Core Library", "_ref": "projects/core.json" },
        { "id": "modules", "name": "Business Modules", "_ref": "projects/modules.json" }
      ]
    },
    "organization": {
      "format": "streaming",
      "chunkSize": 1000
    }
  }
}

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Chunked Processing

Configure projects for efficient memory usage with parallel processing: 
{
  "project": {
    "id": "modules",
    "name": "Business Modules",
    "language": "typescript",
    "items": {
      "format": "jsonl",
      "file": "modules-items.jsonl",
      "count": 45678
    },
    "metadata": {
      "processingStrategy": "chunked",
      "memoryLimit": "512MB",
      "parallelProcessing": true
    }
  }
}

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Key Features

  • Service Independence: Each microservice maintains its own documentation
  • Cross-References: Services can reference APIs from other services
  • External Dependencies: Document integration with third-party APIs
  • Performance Optimization: Streaming and chunked processing for large codebases
  • Logical Grouping: Organize services by their role in the architecture

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Best Practices

  1. Document Service Boundaries: Clearly indicate which APIs are public vs internal
  2. Track Dependencies: Maintain explicit references between services
  3. Version Carefully: Use semantic versioning and track breaking changes
  4. Optimize for Scale: Use JSONL and streaming for services with large APIs
  5. Group by Function: Organize navigation by service purpose, not technology

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Performance Considerations

For large microservices architectures:
  • Use JSONL format for all services with 100+ documented items
  • Enable streaming processing when total items exceed 10,000
  • Configure chunk size based on available memory (1000 items = ~10MB)
  • Use parallel processing for faster documentation generation
  • Set memory limits to prevent out-of-memory errors

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See Also

This example is part of the OpenDocs Specification RFC. Provide feedback to help improve it.