Designing Modular Boundaries for Content Platforms

A content platform may start as “read Markdown and render pages,” but multilingual fields, categories, tags, database imports, Mermaid rendering, and search quickly expose unclear boundaries.

Core Boundaries

flowchart LR
    A["Markdown / external drafts"] --> B["Importer"]
    B --> C["SQLite content store"]
    C --> D["Repository projection"]
    D --> E["Markdown renderer"]
    E --> F["Blog page"]
    D --> G["Categories / tags / related posts"]

Engineering Scenario

When Chinese and English are the same article, the database should store one row and project localized fields. Tags should be stable ids mapped to labels at display time.

Best Practices

• Separate storage, projection, and rendering.
• Use stable English slugs.
• Render rich content such as Mermaid in the rendering layer.
• Lock import rules with tests.