5 Hours, Ktor Microservices, Everything You Need To Know

Build a complete microservices architecture with Kotlin and Ktor. In this course, we’ll go from the fundamentals of microservices to a production-style system built with Ktor — covering service communication with REST and gRPC, event-driven architecture with Kafka, database per service, API Gateway, service discovery, authentication, resilience patterns, and API versioning. Every topic is split into two parts: a clear theoretical explanation first, then a hands-on implementation in code, so you understand not just how to build it, but why it’s designed that way. What You’ll Learn Understand what microservices are and when to use them Design and structure microservices with Ktor Build service-to-service communication with REST Implement high-performance communication with gRPC Understand event-driven architecture Produce and consume events with Kafka Apply the Database per Service pattern Build and configure an API Gateway Implement service discovery Understand authentication and security in microservices Secure services with JWT authentication Build resilient services with retries, timeouts, and circuit breakers Version your APIs without breaking clients Build a structured, scalable, and maintainable microservices system Prerequisites Before starting this course, you should have a basic understanding of: Kotlin Ktor fundamentals REST APIs and HTTP SQL and relational databases Docker Docker is an important prerequisite, as we use it to run our databases, message broker, and supporting infrastructure. If you’re new to Ktor, I recommend starting with my previous course first: Ktor Backend Project — From Zero to Hero. You do not need previous experience with microservices, gRPC, Kafka, or service discovery. These topics are explained throughout the course before we implement them. Recommended Tools IntelliJ IDEA IntelliJ IDEA is the recommended IDE for following along with the course. https://www.jetbrains.com/idea/ Docker Desktop https://www.docker.com/products/docke... Official Documentation Ktor Documentation https://ktor.io/docs/ Course Timestamps 00:00 — Introduction 00:52 — What Are Microservices? 09:45 — REST & gRPC Explained 18:27 — REST & gRPC in Code 57:23 — Event-Driven Architecture Explained 1:16:51 — Event-Driven Architecture with Kafka in Code 1:38:13 — Database per Service Explained 1:52:09 — Database per Service in Code 2:31:44 — API Gateway Explained 2:37:43 — API Gateway in Code 2:48:56 — Service Discovery Explained 2:52:23 — Service Discovery in Code 3:23:06 — Microservices Security & Authentication Explained 3:27:17 — Authentication in Code 3:51:59 — Resilience Patterns Explained 4:02:52 — Resilience in Code 4:31:07 — API Versioning Explained 4:37:30 — API Versioning in Code 5:00:57 — Outro Who Is This Course For? This course is designed for developers who want to learn how to build real microservices with Kotlin and Ktor, while developing a strong understanding of the architecture and patterns behind modern distributed systems. Rather than simply writing code, we first explore the underlying concepts and then apply them through practical implementation. Throughout the course, you’ll work with Ktor, REST, gRPC, Kafka, Docker, API Gateway, service discovery, JWT authentication, resilience patterns, and API versioning. If you found the course useful, consider liking the video, subscribing to the channel, and sharing your thoughts or feedback in the comments. #kotlin #ktor #microservices #kotlinbackend #backenddevelopment #grpc #kafka #restapi #jwt #docker #apigateway #softwarearchitecture #softwaredevelopment