# The mariadb profile **Status (source review 2026-10-21): adapter and migration assets, not a deployable generated app profile.** The CLI accepts MariaDB pruning, but only the Convex selection path rewrites the root runtime/deployment composition. The web/worker roots have no MySQL composition, and the previously described profile config file is absent. The platform injects `DATABASE_URL`; these draft assets still name `MARIADB_URL`, so their variable contract also needs reconciliation. The tables and generated-app steps below describe the target design. Adapter and migration-engine tests do not establish a generated application deployment. The persistence profile for an app whose primary store is MariaDB instead of Postgres (spec §5.1): the same procedures, the same modules, the same migrations discipline, on the Kysely MySQL dialect (`@conusai-kit/data-kysely/mysql`) with jobs on BullMQ over Valkey (`@conusai-kit/jobs-bullmq`). | | postgres (default) | mariadb (this profile) | |---|---|---| | Primary store | Postgres 18 | MariaDB LTS | | Data adapter | `@conusai-kit/data-kysely` | `@conusai-kit/data-kysely/mysql` | | Jobs | pg-boss (Postgres) | BullMQ on Valkey (`@conusai-kit/jobs-bullmq`) | | Tenant wall | repository predicate + RLS (three roles, AT-D20) | repository predicate alone — MariaDB has no RLS | | Links | `postgres`, `identity` | `mariadb`, `redis`, `identity` | | Process env | `POSTGRES_URL`, `POSTGRES_READER_URL`, `POSTGRES_MIGRATE_URL` | `MARIADB_URL`, `REDIS_URL` | ## What this folder carries - `conusai.json` — the profile's deployment contract: the same three services, links `mariadb` + `redis` + `identity`. There is no `mariadb.migrate` flag: the three-role split it declares on Postgres (data-services DS21) exists to make row-level security bind, and MariaDB has none, so every process holds the one `MARIADB_URL` and ordering is compose's `service_completed_successfully` alone (AT-D14). - `compose.yaml`, `compose.dev.yaml` — the profile's compose files. The dev overlay runs `mariadb:lts` and `valkey/valkey:9-alpine`, the images the platform's catalog offers. - `migrations/` — the kernel tables (tenancy, sign-in, files, proposals, outbox, idempotency keys) as MariaDB DDL, generated by `mysqlSchemaStatements` from the same entity definitions as the postgres files and committed, forward-only. A module's own MariaDB migrations live with the module: `modules//adapters/kysely/mysql/migrations/`, declared in its manifest as `migrations: { postgres: "migrations", mariadb: "adapters/kysely/mysql/migrations" }`. ## Target generated-app changes (not wired) The profile is chosen at generation time (`.conusai/template.json` `profile`), and `kit template:prune --profile mariadb` removes the other dialects. Concretely: 1. `config/src/env.ts` reads `MARIADB_URL` (every process) instead of the three Postgres URLs — one login, because there is no RLS to bind (AT-D20 is Postgres-only). 2. `apps/web` and `apps/worker` compose `createMysqlDataSource` (Kysely `MysqlDialect` + `mysql2`) and the worker's queue is `createBullmqJobQueue`/`createBullmqWorker` over `REDIS_URL`. 3. The migrate job runs `runMysqlMigrationsFromEnv` over `profiles/mariadb/migrations/` (moved to `migrations/mariadb/`) and the modules' `adapters/kysely/mysql/migrations/`. 4. This folder's `conusai.json`, `compose.yaml` and `compose.dev.yaml` replace the root ones. The dialect differences are explicit, never generated at run time (spec §5.3): a module's MariaDB schema is its own numbered SQL folder, reviewed like any migration. ## Proof - `@conusai-kit/data-kysely`'s MySQL dialect passes the shared repository and capability contract suites against `mariadb:lts` in testcontainers — the tenant predicate is the wall, and the contract is what proves it. - `@conusai-kit/jobs-bullmq` passes the shared JobQueue contract against `valkey/valkey:9` in testcontainers. - `scripts/vendor/test-template.sh app --profile mariadb` runs the template's gate and then applies this folder's and the modules' MariaDB migrations to a real MariaDB LTS container, so the committed DDL is proven against the engine, not just generated.