nick-doc/02 - Data Models/Postgres Runtime Cutover Status.md

---
title: Postgres Runtime Cutover Status
tags: [data-model, postgres, migration, runtime-status]
aliases: [Postgres Status, PG Cutover Status, Mongo vs Postgres Runtime]
created: 2026-05-31
source: backend integrate-main-into-development@1757f1e
---

# Postgres Runtime Cutover Status

> **Current branch:** backend `integrate-main-into-development` at `1757f1e`, version `2.8.9`.
>
> **Bottom line:** this branch is **Postgres-capable**, not fully Postgres-backed. Auth-owned user data can run through Postgres when `AUTH_STORE=postgres`; confirmation-threshold runtime config/history can run through Postgres when `CONFIG_STORE=postgres`; user address CRUD can run through Postgres when `ADDRESS_STORE=postgres`; marketplace categories, level config, shop settings, and reviews can run through Postgres with their own store flags. All PG-backed stores require `PG_URL`. Mongo remains the default and the compatibility store for still-Mongo domains.

## What Uses Postgres Now

| Area | Runtime status | Notes |
|---|---|---|
| Postgres connection | Available when `PG_URL` is set | Current runtime code uses `src/infrastructure/postgres/client.ts`; there is no `src/db/` Drizzle layer in this checkout. |
| Runtime schema bootstrap | Implemented for auth, config, address, and reference stores | Auth tables are bootstrapped from `src/services/auth/postgresAuthSchema.ts`; store facades bootstrap their own tables at startup when their `*_STORE=postgres` flag is enabled. |
| Auth-owned user store | Opt-in with `AUTH_STORE=postgres` | Auth, passkey, Telegram auth/link/session/temp-verification, and `/api/user` profile paths use an auth-store facade. In PG mode, users are stored in Postgres and mirrored back to Mongo through `legacy_object_id` for compatibility with still-Mongo services. |
| Confirmation-threshold runtime config | Opt-in with `CONFIG_STORE=postgres` | `ConfigSetting` / `ConfigSettingHistory` access for `/api/admin/settings/confirmation-thresholds` and transaction-safety confirmation thresholds uses a config-store facade. PG-mode writes mirror back to Mongo for rollback. |
| User addresses | Opt-in with `ADDRESS_STORE=postgres` | `/api/addresses` CRUD uses an address-store facade. PG mode enforces one primary address per user with a partial unique index and mirrors writes/deletes back to Mongo for rollback. |
| Marketplace categories | Opt-in with `CATEGORY_STORE=postgres` | `CategoryService` and the default `General` category path use a category-store facade. PG-mode writes mirror back to Mongo for rollback and still-Mongo request/template references. |
| Level configuration | Opt-in with `LEVEL_CONFIG_STORE=postgres` | `PointsService` level reads use a level-config facade. `PointTransaction` and user points remain Mongo-backed. |
| Shop settings | Opt-in with `SHOP_SETTINGS_STORE=postgres` | Shop settings controller, seller payment rail resolution, and review enable/disable checks use a shop-settings facade. PG-mode writes mirror back to Mongo. |
| Marketplace reviews | Opt-in with `REVIEW_STORE=postgres` | Review list/summary/create routes use a review-store facade. PG-mode list responses still hydrate `reviewerId` from the user mirror to preserve frontend shape. |
| Repository implementations | Not present in current checkout | The old Drizzle plan still describes the target architecture, but this branch's actual cutover work is currently store-specific raw PG facades. |
| Oracle quote persistence | Conditional runtime PG write | `/api/payment/request-network/intents` lazily imports `quoteRepo` only when `ORACLE_QUOTING_ENABLED=true`; it writes `payment_quotes` if the PG parent payment row exists, mirrors to Mongo `Payment.quote`, and records `pg_dualwrite_gaps` if PG is behind. |
| Backfill/verify scripts | Available as operator tooling | `MIGRATION_PG_URL` drives backfill scripts; guards restrict allowed target hosts. These scripts are not run automatically by app startup. |

## What Is Still Mongo-Backed

Most of the service layer still imports Mongoose models directly. Auth-owned paths now have an auth-store boundary; confirmation-threshold config, user addresses, categories, level config, shop settings, and reviews have store boundaries. Broad marketplace requests/offers/templates, payment, funds ledger, points transactions, chat, notification, and admin paths remain Mongo-first.

| Domain | Current live store | Why not Postgres yet |
|---|---|---|
| Legacy/broad user consumers | MongoDB mirror | Auth-owned users can be PG-backed, but still-Mongo domains expect Mongo ObjectId user references. PG-mode writes therefore maintain a Mongo mirror until those domains are cut over. |
| Admin cleanup / seed address tooling | MongoDB | User-facing address CRUD is PG-capable, but admin cleanup and seed scripts still operate on Mongo first. Seed scripts backfill addresses to PG when `ADDRESS_STORE=postgres`. |
| Marketplace requests/offers/templates | MongoDB | Marketplace, checkout, and seller-offer services still call `PurchaseRequest`, `SellerOffer`, and `RequestTemplate` directly. Category and shop-settings reads/writes are PG-capable through facades, but request/template documents still hold Mongo ObjectId references. |
| Payments and escrow state | MongoDB primary | Request Network, AMN scanner, webhook, admin, release/refund, adapter, reconciliation, and legacy payment paths still create/update `Payment` Mongoose documents directly. |
| Funds ledger | MongoDB primary | `FundsLedgerEntry` remains the ledger used by current services; PG ledger tables exist but are not the live write target. |
| Derived destinations and sweeps | MongoDB | Wallet destination allocation and sweep services call `DerivedDestination` directly. |
| Points/referrals/transactions | MongoDB | Level configuration is PG-capable, but `User` points fields, `PointTransaction`, referral aggregation, and Mongo transactions remain Mongo-backed. |
| Chat/messages | MongoDB | Chat intentionally remains document-shaped and is not part of the current PG cutover. |
| Notifications | MongoDB | Notification TTL/read-state paths remain Mongo-backed. |
| Disputes/blog/content/admin cleanup | MongoDB | Reviews are PG-capable; disputes, blog/content, and admin cleanup still call their Mongoose models directly. |
| Runtime config outside confirmation thresholds | MongoDB | `ConfigSetting` and `ConfigSettingHistory` are PG-capable for confirmation thresholds only; any future admin-editable settings need to route through the same config-store boundary before they count as cut over. |
| Telegram link/session/temp verification | Default MongoDB, PG-capable with auth store | These records move with `AUTH_STORE=postgres`; default runtime remains Mongo until the environment flag is flipped. |

## Env Flag Reality

| Flag | Current meaning |
|---|---|
| `AUTH_STORE` | `mongo` by default. Set `AUTH_STORE=postgres` to route auth-owned users, refresh tokens, passkeys, Telegram links/sessions, and temp verifications through Postgres. |
| `CONFIG_STORE` | `mongo` by default. Set `CONFIG_STORE=postgres` to route confirmation-threshold settings/history through Postgres. |
| `ADDRESS_STORE` | `mongo` by default. Set `ADDRESS_STORE=postgres` to route `/api/addresses` through Postgres. |
| `CATEGORY_STORE` | `mongo` by default. Set `CATEGORY_STORE=postgres` to route marketplace category reads/writes through Postgres. |
| `LEVEL_CONFIG_STORE` | `mongo` by default. Set `LEVEL_CONFIG_STORE=postgres` to route level configuration reads and seed replacement through Postgres. `LEVEL_STORE=postgres` is accepted as a compatibility alias. |
| `SHOP_SETTINGS_STORE` | `mongo` by default. Set `SHOP_SETTINGS_STORE=postgres` to route shop settings, review gates, and seller payment rails through Postgres. |
| `REVIEW_STORE` | `mongo` by default. Set `REVIEW_STORE=postgres` to route marketplace reviews through Postgres. |
| `PG_URL` | Makes PG code importable/reachable. Required for any `*_STORE=postgres` flag; does not cut over unrelated app domains by itself. |
| `MIGRATION_PG_URL` | Used by backfill scripts and migration runbooks; not part of normal request handling. |
| `REPO_USER`, `REPO_PAYMENT`, `REPO_POINTS`, `REPO_MARKETPLACE`, `REPO_DEFAULT` | Repository factory flags exist, but broad services are not yet wired through the factory. Treat them as migration controls that need integration verification before relying on them. |
| `ORACLE_QUOTING_ENABLED` | Enables server-side quote computation and the only current PG write path in normal checkout: `payment_quotes`, when a PG parent row can be resolved. |

## Next Cutover Work

1. Apply Drizzle migrations to the target Postgres database.
2. For auth cutover, run `PG_URL=... npm run backfill:auth:postgres`, verify counts, then set `AUTH_STORE=postgres`.
3. For confirmation-threshold config cutover, run `PG_URL=... npm run backfill:config:postgres`, verify counts/history, then set `CONFIG_STORE=postgres`.
4. For address cutover, run `PG_URL=... npm run backfill:address:postgres`, verify one-primary invariants, then set `ADDRESS_STORE=postgres`.
5. For reference-domain cutover, run:
   - `PG_URL=... npm run backfill:category:postgres`
   - `PG_URL=... npm run backfill:level-config:postgres`
   - `PG_URL=... npm run backfill:shop-settings:postgres`
   - `PG_URL=... npm run backfill:review:postgres`
6. Run `PG_URL=... MONGODB_URI=... scripts/smoke/reference-stores-postgres.sh`, then set `CATEGORY_STORE=postgres LEVEL_CONFIG_STORE=postgres SHOP_SETTINGS_STORE=postgres REVIEW_STORE=postgres` together in non-prod.
7. Run non-prod backfills for the remaining larger domains in dependency order and record row-count/checksum results.
8. Wire remaining services to repository interfaces one domain at a time.
9. Enable `dual` mode per large domain only after wiring is proven by tests and smoke checks.
10. Run shadow-read/reconcile during a soak window.
11. Flip reads to `pg` per domain only after zero-diff shadow reads and a rollback plan are in place.

## Related Docs

- [[Database Strategy - Mongo vs Postgres Assessment]]
- [[MongoDB to PostgreSQL Migration Plan (Drizzle)]]
- [[Payment]]
- [[Payment API]]
- [[Environment Variables]]
- [[Database Operations]]