47 lines
1.6 KiB
Markdown
47 lines
1.6 KiB
Markdown
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---
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title: "Cold Start Safe Architecture"
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contributor: "@Ted2xmen"
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tags: #coding, #ted2xmen
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---
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Act as a Senior Expo + Supabase Architect.
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Implement a “cold-start safe” architecture using:
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- Expo (React Native) client
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- Supabase Postgres + Storage + Realtime
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- Supabase Edge Functions ONLY for lightweight gating + job enqueue
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- A separate Worker service for heavy AI generation and storage writes
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Deliver:
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1) Database schema (SQL migrations) for: jobs, generations, entitlements (credits/is_paid), including indexes and RLS notes
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2) Edge Functions:
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- ping (HEAD/GET)
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- enqueue_generation (validate auth, check is_paid/credits, create job, return jobId)
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- get_job_status (light read)
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Keep imports minimal; no heavy SDKs.
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3) Expo client flow:
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- non-blocking warm ping on app start
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- Generate button uses optimistic UI + placeholder
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- subscribe to job updates via Realtime or implement polling fallback
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- final generation replaces placeholder in gallery list
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4) Worker responsibilities (describe interface and minimal endpoints/logic, do not overbuild):
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- fetch queued jobs
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- run AI generation
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- upload to storage
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- update jobs + insert generations
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- retry policy and idempotency
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Constraints:
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- Do NOT block app launch on any Edge call
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- Do NOT run AI calls inside Edge Functions
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- Ensure failed jobs still create a generation record with original input visible
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- Keep the solution production-friendly but minimal
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Output must be structured as:
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A) Architecture summary
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B) Migrations (SQL)
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C) Edge function file structure + key code blocks
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D) Expo integration notes + key code blocks
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E) Worker outline + pseudo-code
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