Case study · Multi-tenant restaurant operations
TechSfera POS
A production-oriented restaurant POS platform with tenant isolation, branch-level access, operational modules, and WAN-resilient synchronization.
Context
One operating system for every restaurant branch
Multi-location restaurant teams needed one platform for POS operations, inventory, ingredients, production batches, menu pricing, loyalty, and coupons.
Constraint
Branches could not depend on a perfect WAN
Branch operations had to tolerate unreliable WAN connectivity while databases, cache, authentication, domain routing, roles, and permissions remained isolated per tenant.
Decision
Sequence changes, then make replay safe
I designed an immutable sequenced-event tracer with idempotent command replay and retry/backoff, alongside isolated tenant infrastructure and granular branch-level RBAC.
- Idempotent command replay
- Retry and backoff for transient failures
- Branch-scoped roles and permissions
Under the hood
Tenant isolation around a replayable sync path
The interface sends replay-safe commands through Laravel services, records their sequence, and persists tenant data in PostgreSQL.
- React UI
- Laravel services
- Sync tracer
- PostgreSQL
- Laravel
- React
- TypeScript
- PostgreSQL
- Docker
- Node.js