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devos/Docs/devos-v1/07-BACKEND-ARCHITECTURE.md
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phptits 0d6cd37579 DevOS v1 + Phase 2: unified resource model, infra ops, website deployment, AI chat ops 
- Monorepo: NestJS API (Fastify) + React web (antd/ProComponents) + shared packages
- PostgreSQL/Prisma (unified resources, relations graph, audit, events, jobs)
- Auth/RBAC/workspace isolation, credential vault (AES-256-GCM)
- Servers/SSH, Docker discovery & lifecycle, Job Center
- Websites & deployments (git provider credential clone, env, health verification)
- Domains/DNS (Cloudflare adapter), certificates (TLS probe), monitoring
- Automation (cron/event/webhook HMAC + notifications), AI Gateway, MCP (29 tools)
- AI chat window (LLM function-calling + rules fallback, SSE streaming, approvals)
- Notes: Vditor WYSIWYG markdown editor, non-blocking autosave
- Tests: 35 unit/security tests; UI audit clean (desktop+mobile, deep links)
2026-09-10 06:35:55 +00:00

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DevOS v1 Backend Architecture

1. Style

Modular monolith with NestJS.

2. Suggested Structure

apps/api/
├── src/
│   ├── modules/
│   │   ├── identity/
│   │   ├── workspace/
│   │   ├── resource/
│   │   ├── permission/
│   │   ├── audit/
│   │   ├── server/
│   │   ├── container/
│   │   ├── website/
│   │   ├── domain/
│   │   ├── deployment/
│   │   ├── monitoring/
│   │   ├── automation/
│   │   └── ai/
│   ├── integrations/
│   │   ├── ssh/
│   │   ├── docker/
│   │   ├── git/
│   │   ├── dns/
│   │   ├── cloud/
│   │   └── email/
│   ├── common/
│   └── main.ts

3. Rules

  • Controllers handle transport only.
  • DTOs define input/output contracts.
  • Business logic belongs in application/domain services.
  • Provider-specific logic belongs behind adapters.
  • Credential access is centralized.
  • Mutations are auditable.
  • Long-running operations run asynchronously.
  • External calls have timeouts, retries where safe, and idempotency where possible.

4. Infrastructure Adapters

DevOS does not reimplement:

  • SSH
  • Git
  • Docker
  • DNS
  • SMTP
  • cloud control planes

It provides unified adapters over those systems.

5. Async Execution

Use Redis-backed jobs for:

  • deployment
  • server discovery
  • monitoring checks
  • long-running SSH commands
  • automation execution

6. Observability

Every operation should carry:

  • request ID
  • correlation ID
  • actor
  • workspace
  • resource
  • action
  • outcome
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