Low-Level Design (LLD)
Technical implementation details for the Vendor domain.
Component Specifications
| Component | Technology | Responsibility |
|---|---|---|
| API Gateway | Kong / AWS API GW | Routing, rate limiting, authentication |
| MDM Engine | Custom / Informatica | Business rules, validation, merge logic |
| Master Data Store | PostgreSQL | Golden record persistence |
| Search Index | Elasticsearch | Query and retrieval |
Interface Contracts
- Draft API — Synchronous; create/update vendor records
- Publication — Event-driven via Kafka topics
- Vendor Data Topic — Downstream consumption
Configuration
- Country rulesets for validation
- Duplicate detection policies (BLOCK / ALLOW)
- Workflow stage definitions
Related
- High-Level Design — Architecture overview
- Data Model — Entity structure
- Architecture Diagrams — Visual diagrams
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