Keep the pharmacy working when the connection does not.
Inventory and sales are everyday work. Requiring a constant cloud connection would make local operations depend on network availability.
The backend is an offline-first FastAPI sidecar using a local SQLite database. Local inventory and sales can be stored on the pharmacy machine.
The local database must be persisted and backed up independently of application deployments.
A separate worker sends outbox events in configurable batches. This separates local transactions from the timing of a remote service.
Retry behavior and remote event handling need careful coordination.
Alembic migrations and configurable startup migration behavior support updating an installed database.
Deployments must preserve the database file and handle failed upgrades safely.
A local-first architecture with a separate path for cloud synchronization, rather than a browser-only dependency on a remote API.
FastAPI · SQLite · Outbox worker
Based on the project implementation and documentation. Tradeoffs explain the implications of these choices; no measured business results or client feedback are claimed.
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