Case Studies: Proova Backend Architecture

This repository contains educational case studies based on real-world backend architecture decisions.
All examples are generalized, redacted, or simplified to ensure confidentiality.
No client-specific data, credentials, or internal systems are included.

Included Case Studies

1. User → Person + SubUser Decomposition — Multi-tenant identity management and SaaS readiness.
2. WebSocket Event Delivery System — Transactional outbox + queue + WS Gateway, with deduplication and retries.
3. Domain Isolation & Shared Layer Architecture — Safe separation of bounded contexts and reusable infrastructure.
4. Temporary File Upload Handling — Multi-step form uploads with temporary storage and Redis metadata.

Purpose

Each case demonstrates:

• the problem and constraints
• the chosen solution and architecture
• the impact and lessons learned

Note: These case studies are educational examples only.
They are intended to showcase engineering thinking, system design, and architectural decision-making, without exposing any client-specific information.

Usage

• Browse each folder to read detailed RFCs and ADRs
• Study the architecture patterns and lessons learned
• Adapt the concepts safely in your own projects