.NET 5 REST API Tutorial - Build From Scratch With C#

Learn how to create a REST API end-to-end from scratch using the latest .NET 5 innovations and Visual Studio Code. The API will be written in C#.

⭐️ Course Contents ⭐️
Getting Started
0:00:00 Introduction
0:03:02 Creating the project
0:04:01 Exploring the generated project files
0:10:03 Trusting the self-signed certificate
0:11:36 Exploring the default Swagger UI page
0:12:30 Configuring Visual Studio Code settings

Entity, Repository, Controller GET
0:14:33 Introduction
0:15:45 Adding an entity
0:20:39 Ading an in-memory repository
0:26:40 Creating the controller
0:30:42 Implemeting GET all items
0:33:37 Implemeting GET single item
0:37:47 Returning a 404 NotFound status code

Dependency Injection, DTOSs
0:39:57 Introduction
0:41:23 What is dependency injection?
0:46:14 Extracting the repository interface
0:47:44 Injecting the repository into the controller
0:48:53 Registering the repository as a singleton
0:52:32 Adding a Data Transfer Object DTO
0:55:46 Creating the AsDto extension method

POST, PUT, DELETE
0:58:59 Introduction
0:59:45 Implementing POST
1:07:39 Adding validations via data annotations
1:10:00 Implemeting PUT
1:17:33 Implementing DELETE

Persisting Entities with MongoDB
1:20:46 Introduction
1:24:44 Using Postman
1:27:53 Creating a MongoDB repository
1:29:42 Using the MongoDB.Driver NuGet package
1:33:28 Implementing MongoDB Create
1:33:57 Running the MongoDB Docker container
1:38:47 Configuring MongoDB connection settings
1:42:38 Registering the MongoClient singleton
1:48:02 Testing the MongoDB integration
1:50:04 Exploring the created database in VS Code
1:52:45 Implemeting MongoDB Get, Update and Delete

Tasks, Async and Await
2:02:27 Introduction
2:06:46 Using the Async suffix
2:09:04 Using tasks in the repository
2:11:50 Using async and await
2:14:28 Returning completed tasks
2:18:16 Using tasks in the controller
2:21:23 Testing async methods in Postman

Secrets and Health Checks
2:27:02 Introduction
2:30:06 Enabling authentication in MongoDB
2:33:36 Using the .NET Secret Manager
2:36:40 Using the MongoDB credentials in the service
2:40:00 Introduction to Health Checks
2:42:28 Adding an endpoint for health checks
2:44:46 Adding a MongoDB health check
2:48:41 Adding checks for readiness and liveness
2:53:51 Customizing the health check response
2:58:59 Exploring other health check NuGet packages

Docker
3:00:44 Introduction
3:08:28 What is Docker?
3:17:54 Removing https redirection
3:20:39 Generating a Dockerfile in VS Code
3:30:40 Building the Docker image
3:33:00 Adding a Docker network
3:34:07 Running the containers in the Docker network
3:40:36 Running the REST API in Docker
3:42:02 Pushing the container image to Docker Hub
3:46:02 Exploring the image in Docker Hub
3:46:32 Pulling the image back to the local box

Kubernetes
3:49:20 Introduction
3:54:05 What is Kubernetes?
4:04:06 Enabling a Kubernetes cluster in Docker Desktop
4:06:12 Installing the Kubernetes extension for VS Code
4:06:58 Declaring the REST API Kuberentes deployment
4:14:35 Creating a secret in Kubernetes
4:17:28 Declaring health probes
4:19:14 Declaring the REST API Kubernetes service
4:22:56 Creating the REST API resources in Kubernetes
4:26:15 Declaring the MongoDB Kubernetes StatefulSet
4:36:09 Declaring the MongoDB Kubernetes service
4:38:27 Creating the MongoDB resources in Kubernetes
4:40:42 Testing the REST API hosted in Kubernetes
4:42:08 Exploring the Kubernetes self-healing capability
4:46:04 Scaling Kubernetes pods
4:47:38 Adding logs via ILogger
4:52:04 Getting a new image version into Kubernetes
4:53:23 Load balancing requests across pods

Unit Testing and TDD
4:56:23 Introduction
4:57:04 What is unit testing?
5:01:19 What is test driven development?
5:04:25 Restructuring files and directories
5:08:25 Creating the xUnit test project
5:09:15 Building multiple projects in VS Code
5:13:10 Adding NuGet packages for unit testing
5:14:35 Testing GetItemAsync unexisting item
5:18:35 Using the AAA pattern
5:19:31 Stubbing dependencies via Moq
5:26:52 Running tests in VS Code
5:28:05 Using the .NET Core Test Explorer extension
5:30:55 Testing GetItemAsync existing item
5:38:01 Using FluentAssertions
5:41:46 Testing GetItemsAsync
5:45:41 Testing CreateItemAsync
5:53:13 Testing UpdateItemAsync
5:57:51 Testing DeleteItemAsync
5:59:40 Refactoring and catching regressions
6:10:50 Using TDD to test a yet to be created method
6:19:07 Going back to green by fixing the failing test
6:21:19 Testing the new controller method in Postman

[juliocasal]

Thanks a lot Beau for sharing the tutorial in this awesome channel. Really hope it helps folks get started with my favorite platform!

[aLoffDasVampiros]

This tutorial is one step beyond. You look at other tutorials and it's just a lot of instructions with an occasionaly helpful screenshot. Here you show in real time what you are doing and explain the concepts at the same time. This has been revealing some of the mystery behind some of the code for me.

[LeonardoTx]

This is some precious content. Never seen a tech instructor/teacher this good. Actually explains things without assuming that you already know it all. Most of the people out there are just so disconnected when trying to teach tech related things... some of them just paste code and read it trying to explain which is honestly an awful way to teach code and some just type code assuming you know it all already (which is understandable, most of them are developers/experts and not actually teachers) I finally understand what dependency injection actually is! THANK YOU so much. Great video.

[drellybochelly]

Really enjoyed this course, I'm a .NET developer and learned a lot. Great pacing, very few assumptions and solid presentation.

[yanjim]

I can't believe that all this material is free. Thanks a lot guys, it's explendid!

[svrandombozo]

The wow auction sound from subscribe notification during the video had me kept looking at my wow client that i had open. Took me a while to realize why i kept hearing it. Gave me a good chuckle.

[johnmcmahon]

Working through this now and the Instructor and material are great. Really wonderful way to teach the material and not just a step by step tutorial. I am working on a project that uses Azure services for DB, API, etc so I need the conceptual understanding which this course presents very well.

[RedantsCaribbean]

This is the first tutorial of the many I watched which showed DI and DI containers in such an understandable format. I never understood it as well as I now.

[srini]

One of the very very few good courses available on YouTube ! very precise and this tutorial is priceless !

[hafizmfadli]

I'am so happy because YouTube recommend me this video when in my internship program required me to use .NET, thank you FCC and Julio

[yashizuko]

I was expecting some insight on c# backend but we got an amazing course going beyond that, even kubernetes!

[Caranor]

43:56 wow I've read many articles and still don't understand Dependency Inversion Principle. Now I finally understand. Love the diagram

[CarlosMonterrubio]

Great way of teaching, pretty useful and keeps you interestet. Better than lots of PluralSigth courses. Excellent job!

[lulagoodwin]

this is such a demystifying course. I'm so thankful.

[krzysztofmekwinski]

This tutorial is amazing. It covers a lot of different concepts in very friendly way. I am half way . I wish there would be also small section on connecting this to SQL DB. I am doing that on my own, but including this would be like only source of information for RestAPI.

[ricardomlourenco]

This is absolutely amazing!! It was really a great course in the fundamentals also the Docker and Kubernetes demos were perfect! Thanks again for sharing it ...

[fenrir]

Great to have a fellow developer who is also a fan of Final Fantasy!

[szalaytamas]

Im just doing a spring boot course. Concepts are simiral can't tell much. At44mins seems like in dotnet the api endpoints handling is simpler than in springboot. Watching the videout out of curiosity. Btw like it some stuff are unlogical yet might be because lack of my knowledge. Will watch a db reply with my opinion. Btw I like the way you teach. Great video.

[josedavidflores]

Incredible bootcamp!!😱😍
Thank you so much!

[alejandromachacanavia]

Really great tutorial, we want more of the Julio Casal Videos please