Full-Stack[SYS_ID: ZAM-ZAM-TRADER-INVENTORY-SYSTEM]
Full-stack inventory platform for Zam Zam Trader covering stock tracking, supplier management, orders, alerts, and reports.
01.System Interface & Screenshots
https://zam-zam-trader-inventory-system.aqib.dev
[SCREENSHOT_01_ACTIVE]
02. Interactive Pipeline Simulation
Interactive System Architecture Simulator
Simulate processes and see live data flows, database locks, and logs in Aqib's backend pipelines.
System Node Architecture:
3 Buyers
NestJS App
Postgres DB
Visual Feedback Window:
POSTGRESQL TRANSACTION STATELOCKS: NONE
User A (Request 1):PENDING
User B (Request 2):PENDING
User C (Request 3):PENDING
Pipeline Stage Info
Press "Start Simulation" to review detailed process annotations.
Pipeline Console Output:
Console output idle. Launch simulation to trace diagnostic outputs.
03. The Problem
A client needed a reliable system to manage stock, suppliers, orders, and reporting.
04. The Solution
Built a scalable NestJS backend with PostgreSQL and a responsive React dashboard.
05. Key Features
- >Stock tracking
- >Supplier management
- >Order workflows
- >Role-based access control (RBAC)
- >Audit logging
- >Low-stock alerts
- >Exportable reports
Backend & API Architecture
-Relational database modeling with strict foreign keys and indexes
-REST API architecture with clean service-repository separation
-Authentication and authorization middlewares (RBAC)
-System audit logger tracking stock adjustments
08. Engineering Challenges
Handling concurrent stock changes during high-traffic checkout events
Implemented database transaction locks to preserve exact counts.
Generating large-scale PDF reports without stalling the event loop
Offloaded processing to worker threads on the backend.
[SYSTEM_SPECIFICATIONS]
ROLE:
Full-Stack Engineer
CATEGORY:
Full-Stack
TECHNOLOGY STACK:
ReactNestJSPostgreSQLREST APIs
BUSINESS IMPACT:
Delivered a complete inventory workflow for Zam Zam Trader, reducing discrepancies and stockouts.