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| 1 | +# Architecture Notes — Recursion Lab |
| 2 | + |
| 3 | +This file distills a short Architect Guide for module authors who want to design and manage whole projects. |
| 4 | + |
| 5 | +Principles |
| 6 | +- Encapsulate intent: module boundaries should reflect responsibilities and invariants, not only file layout. |
| 7 | +- Standardize interfaces: use explicit, stable contracts (schemas or API specs). |
| 8 | +- Observability from the start: logs, traces, and metrics make integration problems visible. |
| 9 | +- Design for graceful failure: define how modules degrade and recover. |
| 10 | +- Evolve safely: version contracts and provide deprecation paths. |
| 11 | + |
| 12 | +Quick checklist |
| 13 | +- One-line ownership for each module (who owns what). |
| 14 | +- Explicit contract for each integration (inputs, outputs, errors). |
| 15 | +- Failure modes documented and practiced. |
| 16 | +- Integration tests in CI (contract tests and a small end-to-end smoke test). |
| 17 | +- Observability: structured logs + a couple of business metrics for key flows. |
| 18 | + |
| 19 | +Mini example (blog) |
| 20 | +- Content API owns canonical content and emits `content.updated` events. |
| 21 | +- Admin UI talks to Content API synchronously for editing flows. |
| 22 | +- Search service subscribes to events to index content asynchronously. |
| 23 | +- CDN serves static builds; preview mode reads content directly for staging. |
| 24 | + |
| 25 | +Practical next steps (minimal edits you can do now) |
| 26 | +- Add one-sentence ownership lines to module READMEs. |
| 27 | +- Add a contract checklist entry to PR templates (if you have them). |
| 28 | +- Ensure CI runs the Jekyll build (already present) and add a smoke test for a public route. |
| 29 | + |
| 30 | +If you want, I can convert this into a more detailed `ARCHITECTURE.md` with diagrams, or add a small PR template and a README checklist. For now this is kept minimal so you can add your content later. |
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