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@SellFast-Project

SellFast Project

SellFast

A full-stack classified-ads marketplace built with ASP.NET Core 10 and React 18.
Users can post, search, and reserve second-hand items. Sellers get real-time notifications; buyers can message, watchlist, and review.


Tech Stack

ASP.NET Core React PostgreSQL Redis Docker SignalR MUI


Repositories

Repo Description
Backend ASP.NET Core 10 · Clean Architecture · REST API
Frontend React 18 · Vite · Redux Toolkit · Material UI

SRS Requirements Progress

# Requirement Status
FR-01 User Registration ✅ Implemented
FR-02 Email Verification ✅ Implemented
FR-03 Login / JWT Authentication ✅ Implemented
FR-04 Password Reset ✅ Implemented
FR-05 User Profile Management ✅ Implemented
FR-06 Create Advertisement ✅ Implemented
FR-07 Update / Manage Advertisement ✅ Implemented
FR-08 Search Advertisements (+ Geo) ✅ Implemented
FR-09 Browse Latest / Top ✅ Implemented
FR-10 Advertisement Detail + View Count ✅ Implemented
FR-11 Photo Upload (Cloudinary) ✅ Implemented
FR-12 Reservation System (Redis TTL) ✅ Implemented
FR-13 Messaging / Inbox ✅ Implemented
FR-14 Watchlist ✅ Implemented
FR-15 Notifications + SignalR Real-time ✅ Implemented
FR-16 Reviews / Seller Profile ✅ Implemented
Admin Panel (Phase 1 + 2) ✅ Implemented
Support Tickets ✅ Implemented
NFR-01 Performance (Redis Cache, Indexes) ✅ Implemented
NFR-02 Scalability (Stateless JWT, Redis) ✅ Implemented
NFR-03 Data Integrity (UoW, Constraints) ✅ Implemented
NFR-04 Security (JWT, Rate Limiting, HTTPS) ✅ Implemented
NFR-05 Availability (Health Checks) ✅ Implemented
NFR-06 Maintainability (Clean Architecture) ✅ Implemented

All 24 SRS requirements: ✅ Complete


Architecture Overview

┌─────────────────────────────────────────────┐
│              React 18 Frontend               │
│  Redux Toolkit · Axios · Material UI v6     │
└───────────────────┬─────────────────────────┘
                    │ REST + SignalR
┌───────────────────▼─────────────────────────┐
│         ASP.NET Core 10 API                 │
│  Clean Architecture (Domain / App /         │
│  Infrastructure / Presentation)             │
│  JWT Auth · SignalR · Rate Limiting         │
│  Health Checks (/health)                   │
└──────┬──────────────────┬───────────────────┘
       │                  │
┌──────▼──────┐    ┌──────▼──────┐
│ PostgreSQL  │    │    Redis    │
│ EF Core 10  │    │ Cache·Lock  │
│ Migrations  │    │ GEO·SignalR │
└─────────────┘    └─────────────┘
                         │
                  ┌──────▼──────┐
                  │  Cloudinary │
                  │   (Photos)  │
                  └─────────────┘

Branch Status

Branch Status Description
Dev_1 ✅ Active Main development branch — 42 commits, all features merged
feature/remaining-items ✅ Merged Rate limiting, health checks, SignalR notifications
feature/admin-panel-phase2 ✅ Merged Review management, enhanced admin
feature/critical-fixes ✅ Merged HTTPS, admin guard, geo count, email URLs

Key Features

  • Geo-based search — Redis GEOSEARCH with radius filter (5–100 km)
  • Distributed reservations — Redis SET NX PX lock prevents double-booking; 10-min TTL auto-cancels via keyspace events
  • Real-time notifications — SignalR hub pushes ReceiveNotification events instantly when listings are reserved or sold
  • Redis cache — 4 cache paths with ±15% TTL jitter for stampede protection
  • Rate limiting — 10 req/min per IP on auth endpoints
  • Health endpointGET /health checks PostgreSQL and Redis connectivity
  • Admin panel — user management, advertisement moderation, support tickets, review management, audit log

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