🛒 Dealer POS Management System
A comprehensive cloud-based POS Management System built with FastAPI + Flask following Microservice Architecture. Features dealer-to-shopkeeper ordering ecosystem, real-time inventory, billing, finance, and complete business management. High-security, high-performance SaaS solution for retail, wholesale, and dealer businesses.
Backend Architecture
FastAPI Primary Engine
Ultra-fast asynchronous API engine
Flask Microservices
Service layer with Flask for microservices architecture
Microservice Architecture
Scalable microservices-based architecture pattern
Layered Architecture
Domain → Application → Infrastructure → API layers
Asynchronous Processing
High-performance async operations
Cloud Scalable
Deployable on AWS, Azure, GCP
Docker
Containerized deployment with Docker for consistent environments
Kubernetes
Container orchestration with Kubernetes for auto-scaling and management
Kafka
Apache Kafka for real-time event streaming and message queuing
Frontend Architecture
Next.js 15 (App Router)
React 19 + TypeScript
Zustand + React Query
Client & server state management
React Hook Form + Zod
Form validation
TanStack Table
POS lists & data tables
Protected Routes
Middleware-based access control
Dynamic Metadata
SEO engine
11+ POS System Modules
Dashboard
Total sales, total purchase, profit/loss overview, remaining stock alerts, pending orders, dealer-to-shopkeeper order overview, and daily/monthly analytics with real-time insights.
Dealer → Shopkeeper Ordering System
Shopkeeper features: Browse dealer products, request orders, track order status (Pending, Confirmed, On the way, Delivered), auto-stock update after purchase, supplier/dealer communication. Dealer features: Receive orders, approve/reject, manage product price/discount/offers, track shopkeeper balances, send invoices, manage credit limits.
POS Billing System
Fast POS billing with product search, barcode scanning, cart management, discount/tax/VAT calculations, multiple payment methods, invoice printing, and digital receipt sending via email/SMS.
Inventory Management
Add/Edit/Delete products, automatic stock update on sale or purchase, damage stock tracking, product variants and units management, low stock alerts, product category & supplier linking.
Purchase Management
Purchase entry, purchase return processing, dealer purchase from supplier, automatic stock-in, expense/cost addition, and supplier invoice management.
Sales Management
Complete sales list, sales return processing, pending sales tracking, sales summary reporting with detailed analytics and export capabilities.
Customer & Supplier
Customer list and balance tracking, supplier list and ledger management, supplier due tracking, credit system with credit limits and payment terms.
Expense Management
Daily expense tracking, category-wise expense management, monthly cost reports, expense approval workflow, and budget tracking.
Finance / Accounts
Multiple bank accounts management, cash flow tracking, cash in/cash out transactions, complete transaction history, payment methods configuration, and multi-currency support.
Reports
Sales reports, purchase reports, profit/loss reports, stock reports, customer ledger, supplier ledger, expense reports, all exportable to PDF/CSV formats.
Settings Module
Shop/Dealer profile management, logo and branding customization, timezone and language settings, invoice design customization, permission settings, and role management.
Mail System
Complete email management system with email templates, bulk email sending, email tracking, automated email notifications, email scheduling, invoice email delivery, and email history tracking.
SMS System
SMS notification system with SMS templates, bulk SMS sending, SMS scheduling, delivery status tracking, SMS gateway integration, order notifications, and automated SMS alerts.
B9AI Chatbot Assistance
AI-powered smart chatbot integration for 24/7 customer support, FAQ automation, lead capture, support ticket management, multi-language support, and seamless website integration.
User Types & Roles
Enterprise-Grade Security
JWT Authentication
Secure token-based authentication with token rotation
CSRF Protection
Cross-site request forgery protection
SQL Injection Prevention
Parameterized queries and input sanitization
Input Validation
Server-side validation for all inputs
Role-Based Access
Granular permission system with module and action-level control
Server-Side Encryption
Data encryption at rest and in transit
IP Blocking
Advanced IP blocking and rate limiting
Secure CORS
Configured CORS policies for API security
Encrypted Cookies
Secure cookie-based session management
Pydantic Validation
Input validation with Pydantic models
Field-Level Access
Granular field-level permission control