Case study 01 · Commerce infrastructure
Product concept · architecture case study
Ethio Gebeya
A scalable Ethiopian marketplace connecting buyers and sellers through a modern, resilient e-commerce architecture.
View source on GitHubTechnology
Next.jsNestJSTypeScriptPostgreSQLPrismaRedisDocker
01
Overview
Marketplace workflows must keep catalog, identity, inventory, and ordering concerns clear while serving buyers and sellers through one product.
02
Solution
A role-aware commerce platform with explicit domain boundaries and a responsive storefront connected to a typed service layer.
03
Architecture
Next.js web client, NestJS application services, PostgreSQL persistence through Prisma, and Redis for cache-ready workloads.
04
System decisions
API
Feature-oriented NestJS modules with validated DTO boundaries.
Database
Relational models for users, products, inventory, and orders.
UI
Role-aware navigation keeps buyer and seller actions predictable.
Security
Authentication plus server-enforced role authorization.
Performance
Cache-ready read paths and deliberate query boundaries.
05
Engineering challenges
- Keeping buyer and seller permissions explicit
- Designing order state transitions that remain auditable
- Separating product discovery from transactional workflows
06
Lessons
Commerce reliability starts with clear state ownership. Modeling permissions and order transitions before polishing UI prevents expensive ambiguity later.
07
Result
A coherent marketplace blueprint with clear ownership across catalog, access, and order workflows.
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