Tutorials Microservices with .NET

YARP API Gateway — Complete Guide

YARP API Gateway — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of Microservices with .NET on Toolliyo Academy.

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Microservices with .NET · Lesson 49 of 120

Logging with API Gateway

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Intermediate · 2 — Building services · ~6 min · Module 5: API Gateway

What is this?

Logging with API Gateway is a key part of ShopNest Cloud-Native — your .NET microservices learning project. In plain terms: it helps Identity Service work correctly in a distributed system where each app deploys and scales on its own.

Why should you care?

You care about this when mobile apps and browsers need one front door URL — not eight different service ports.

See it live — copy this example

Create a Web API project (dotnet new webapi), paste the code, then run dotnet run.

builder.Services.AddReverseProxy()
    .LoadFromConfig(builder.Configuration.GetSection("ReverseProxy"));

// appsettings: /api/orders → order-cluster

Run Example »

This lesson uses terminal or setup steps. Run commands on your computer — the live editor appears on coding lessons.

What happened?

  • The example shows Logging with API Gateway wired into Identity Service.
  • Read each line, run it locally, then change one setting and observe what breaks or improves.
  • That is how teams learn in production too — small experiments, not big bang rewrites.

Try it yourself

  1. Open or create the ShopNest project area for Identity Service.
  2. Apply the Logging with API Gateway pattern from the lesson example.
  3. Run dotnet build && dotnet run (or docker compose up when the lesson uses containers).
  4. Change a string or number in the example and run again — predict the output first.
  5. Break the code on purpose (remove a semicolon), read the compiler error, then fix it.

Remember

Logging with API Gateway connects to Identity Service in ShopNest Cloud-Native. Practice by editing the example yourself — do not only read. Move on when you can explain this topic in your own words without looking.

Real-world: Swiggy order → restaurant → rider flow

When a customer confirms food order, events notify restaurant prep and rider dispatch. No single 30-second HTTP chain.

Outcome: Restaurant promos deploy without taking down payment processing.

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Microservices with .NET
Course syllabus

Microservices with .NET Tutorial

Module 1: Foundations and Fundamentals
Module 2: Building User Microservice
Module 3: ShopNest Services and Integration
Module 4: RabbitMQ and Messaging
Module 5: Saga and Distributed Transactions
Module 6: API Gateway
Module 7: gRPC, CQRS, and GraphQL
Module 8: Resiliency and Fault Tolerance
Module 9: DevOps and Cloud-Native
Module 10: Git and GitHub
Module 11: CI/CD Pipelines
Module 12: Observability and Testing
Module 13: Advanced Topics
Module 14: Real-World Enterprise Projects
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