ASP.NET Core Complete Tutorial (ShopNest)
Lesson 66 of 75 88% of course

Build an E-Commerce Product Catalog API (ASP.NET Core Web API)

1 · 5 min · 5/24/2026

Learn Build an E-Commerce Product Catalog API (ASP.NET Core Web API) in our free ASP.NET Core Complete Tutorial (ShopNest) series. Step-by-step explanations, examples, and interview tips on Toolliyo Academy.

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Build an E-Commerce Product Catalog API (ASP.NET Core Web API) — ShopNest Capstone
Article 66 of 75 · Module 9: Real-World Projects · ShopNest Amazon-like Product API
Target keyword: ecommerce api asp.net core · Read time: ~38 min · .NET: 8 / 9 · Project: ShopNest Amazon-like Product API

Introduction

Capstone #2: ShopNest Catalog API — Clean Architecture, JWT, search/filter/pagination, Azure Blob images, Redis cache, Swagger, tests, Docker Compose.

After this article you will

  • Layer Domain/Application/Infrastructure/API
  • Product search API with Redis cache-aside
  • JWT-secured write endpoints
  • Blob storage for product images
  • Docker Compose + xUnit tests

Prerequisites

Architecture & design

Projects: ShopNest.Catalog.Domain, .Application, .Infrastructure, .Api. Use patterns from Articles 36, 40, 44, 48, 60.

[Authorize(Roles = "Admin")]
[HttpPost("products")]
public async Task<ActionResult<ProductDto>> Create(CreateProductCommand cmd)
    => Ok(await _mediator.Send(cmd));

Hands-on build guide — ShopNest Amazon-like Product API

  1. Entities: Product, Category, Review.
  2. GET /products?search=&category=&sort=price&page=1 with Redis.
  3. POST image → Azure Blob; store URL on Product.
  4. Integration tests with WebApplicationFactory.
  5. docker-compose: api + sql + redis.

Common pitfalls

  • Cache not invalidated on product update — stale listings.
  • Returning EF entities — use DTOs only.

Interview & portfolio questions

Q: Why Redis on catalog?
A: Read-heavy product lists; cache-aside cuts DB load 10x+ on sales.

Summary

  • Production-style API capstone for ShopNest mobile/partners
  • Clean Architecture + CQRS optional via MediatR
  • Docker + tests demonstrate DevOps maturity

Previous: Complete Blog Website
Next: Student Management System

FAQ

Reviews on same API?

Yes — nested /products/{id}/reviews with separate validator.

Azure Blob local dev?

Use Azurite emulator or local wwwroot fallback.

Test your knowledge

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ASP.NET Core Complete Tutorial (ShopNest)

On this page

Introduction After this article you will Prerequisites Architecture &amp; design Hands-on build guide — ShopNest Amazon-like Product API Common pitfalls Interview &amp; portfolio questions Summary FAQ Reviews on same API? Azure Blob local dev?
Module 1: Foundations
What is ASP.NET Core? Complete Guide Setting Up ASP.NET Core Development Environment ASP.NET Core Project Structure Explained MVC Architecture in ASP.NET Core — Complete Guide Controllers and Actions in ASP.NET Core Routing in ASP.NET Core — Conventional and Attribute Routing Views and Razor Syntax in ASP.NET Core Layouts, Partial Views and View Components Models and ViewModels in ASP.NET Core Forms, Model Binding and Validation in ASP.NET Core Tag Helpers in ASP.NET Core — Complete Guide Static Files, Bundling and Minification in ASP.NET Core
Module 2: Entity Framework Core
Entity Framework Core — Introduction and Setup EF Core Code First — Models, Migrations, Database EF Core CRUD Operations — Create, Read, Update, Delete EF Core LINQ Queries — Beginner to Advanced EF Core Relationships — One-to-One, One-to-Many, Many-to-Many EF Core Fluent API — Advanced Configuration EF Core Repository Pattern and Unit of Work EF Core Performance Optimization Database First Approach with EF Core (Scaffold) EF Core with SQL Server — Advanced Features
Module 3: Dependency Injection & Middleware
Dependency Injection in ASP.NET Core — Complete Guide Middleware in ASP.NET Core — Complete Guide Configuration in ASP.NET Core — appsettings, Environment Variables, Secrets Filters in ASP.NET Core — Action, Authorization, Exception, Resource, Result Logging in ASP.NET Core — ILogger, Serilog, NLog Error Handling and Exception Management in ASP.NET Core
Module 4: Authentication & Security
ASP.NET Core Identity — Complete Setup Guide Authentication in ASP.NET Core — Cookie and JWT Authorization in ASP.NET Core — Roles, Policies, Claims JWT Authentication with Refresh Tokens — Complete Implementation OAuth2 and External Login (Google, Facebook, Microsoft) Data Protection and Encryption in ASP.NET Core HTTPS, SSL Certificates and Security Best Practices
Module 5: Web API
Building REST APIs with ASP.NET Core — Complete Guide API Versioning in ASP.NET Core Swagger / OpenAPI Documentation in ASP.NET Core Input Validation in Web APIs — FluentValidation and Data Annotations Pagination, Filtering and Sorting in ASP.NET Core APIs HTTP Client and Consuming External APIs in ASP.NET Core Minimal APIs in ASP.NET Core .NET 8 SignalR — Real-Time Web Applications
Module 6: Advanced Architecture
Clean Architecture in ASP.NET Core CQRS Pattern with MediatR in ASP.NET Core Repository Pattern — Deep Dive with Generic Repository Background Services and Hosted Services in ASP.NET Core Caching in ASP.NET Core — In-Memory, Distributed, Redis Health Checks in ASP.NET Core AutoMapper in ASP.NET Core Microservices with ASP.NET Core — Introduction Message Queues with RabbitMQ / Azure Service Bus in ASP.NET Core gRPC with ASP.NET Core
Module 7: Testing
Unit Testing ASP.NET Core with xUnit and Moq Integration Testing in ASP.NET Core Testing EF Core — In-Memory vs SQLite Performance Testing and Load Testing ASP.NET Core APIs Test-Driven Development (TDD) in ASP.NET Core
Module 8: Deployment & DevOps
Deploying ASP.NET Core to IIS on Windows Server Docker and Containerization for ASP.NET Core Deploying ASP.NET Core to Azure App Service CI/CD with GitHub Actions for ASP.NET Core Azure SQL Database with ASP.NET Core Environment Configuration and Secrets Management
Module 9: Real-World Projects
Build a Complete Blog Website with ASP.NET Core MVC Build an E-Commerce Product Catalog API (ASP.NET Core Web API) Build a Student Management System (Complete CRUD App) Build a Job Portal (Full Stack ASP.NET Core) Build a REST API with Clean Architecture — Complete Guide Build a Real-Time Chat App with SignalR and ASP.NET Core
Module 10: Advanced Topics
Blazor WebAssembly and Blazor Server — Complete Guide gRPC, GraphQL and Alternative API Styles in ASP.NET Core Rate Limiting and API Throttling in ASP.NET Core .NET 8 Output Caching in ASP.NET Core .NET 8 ASP.NET Core .NET 9 New Features — Complete Guide