Ktor Server Pro course

Lessons

– Introduction to user-service part

Module 1 – Getting Started

– Theory: Understanding PostgreSQL
– Running PostgreSQL Instance with Docker
– Visualizing the Database with DBeaver
– Creating The Database Schema For user-service – Creating a New Ktor Project For user-service
– Working with application.yaml

Module 2 – Working with JDBC and Postgres

– Theory: What is JDBC?
– Connecting to Postgres with HikariCP
– Saving New User
– Finding User by ID
– Challenge: Finding User by Email
– Challenge: Finding User by Email and Password
– Updating User
– Introducing Repository for Confirmation Code
– Challenge: Saving Confirmation Code
– Challenge: Checking If Confirmation Code Exists
– Challenge: Deleting Confirmation Code

Module 3 – Working with Transactions and Passwords

– Theory: Calling Blocking Code From Coroutines – Dispatchers.IO
– Creating New User
– Introducing Transactions in JDBC
– Theory: Password Hashing, Salt & Argon2id
– Hashing User Password
– Challenge: Implementing Search Functions
– Challenge: Implementing User Confirmation Logic

Module 4 – Routing Fundamentals

– Theory: Understanding REST
– Setting Up Routing Skeleton
– Defining First Route & Reading JSON with kotlinx
– Creating New Users & Returning HTTP Status Codes
– Custom UUID Serialization
– Returning Custom Headers
– Challenge: Expose Email Confirmation Endpoint
– Postman Tip: Using Variables
– Returning Custom Error Responses
– Reading Path Variables
– JSON Response with Custom Serializer

Module 5 – Security With JWT

– Theory: Understanding JWT
– Theory: Private vs Public Keys
– Generating Keys in Kotlin
– Preparing Config For JWT Generation
– Generating JWT Token
– Exposing Login Endpoint
– Postman Tip: Reuse Data From Response
– Creating JWT Token Verifier
– Securing Endpoints with authenticate
– Custom JWT Validation
– Theory: Authorization vs Authentication
– RBAC with JWTPrincipal

Module 6 – Testing Fundamentals & Unit Testing

– Theory: Introduction to Testing
– Writing Your First Test with JUnit 5
– Using MockK for Mocking
– Verifying Interactions
– Challenge: Testing findActiveByEmailAndPassword
– Handling Exceptions in Tests

Module 7 – Integration Testing with Testcontainers

– Theory: What is Testcontainers?
– Getting started with Testcontainers
– Testing User Persistence
– Running Tests in Isolation
– Challenge: Testing If User Found by ID

Module 8 – Integration Testing REST Endpoints

– Preparing Test Environment
– Testing User Creation with testApplication
– Challenge: Testing User Creation & Confirmation
– User-Service Part Summary

What you will learn?

This part will be the most important service in the whole course. And after user-service, you will be able to handle most real-life cases in your project.

We will see how to:

Configure a new Ktor project from scratch
Run PostgreSQL instance with Docker
Connect our application to Postgres
Work with blocking code and JDBC
Hash passwords and work with JWT tokens
Expose REST APIs
Test Ktor server with JUnit 5 and MockK
Test apps using Testcontainers

Codersee

Lessons

Module 1 – Before We Start

Module 2 – Preparation

What you will learn?

Lessons

Module 1 – Getting Started

Module 2 – Working with JDBC and Postgres

Module 3 – Working with Transactions and Passwords

Module 4 – Routing Fundamentals

Module 5 – Security With JWT

Module 6 – Testing Fundamentals & Unit Testing

Module 7 – Integration Testing with Testcontainers

Module 8 – Integration Testing REST Endpoints

What you will learn?

Lessons

Module 1 – Getting Started With product-service

Module 2 – MongoDB CRUD Operations

Module 3 – Exposing Product REST Endpoints

Module 4 – Securing product-service

What you will learn?

Lessons

Module 1 – Getting Started with order-service

Module 2 – Introduction to Exposed

Module 3 – Exposed DSL

Module 4 – Exposed DAO

Module 5 – Exposed Transactions

Module 6 – Server-sent Events (SSE)

Module 7 – Exposing Order REST Endpoints

What you will learn?

Lessons

Module 1 – Getting Started with chat-service

Module 2 – Working With Multiple Users in WebSockets

Module 3 – Implementing Chat With Redis Pub/Sub

What you will learn?

Only