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Updated in [April 29th, 2023]

What does this course tell?
(Please note that the following overview content is from the original platform)

Build microservice in Kotlin without prior Java knowledge, using REST and GraphQL


What you'll learn:

Basics of Kotlin programming language
Ktor web framework
Working with databases using Exposed DSL
Dependency management with Gradle
Testing with Kotlin
Working with GraphQL
Running Kotlin inside Docker container and Docker Compose
Deploying Kotlin service to Heroku

In this course, we'll build a microservice using Kotlin programming language and Ktor framework, then deploy it to Heroku.
The microservice will be for a cat hostel. You'll be able to add new cats, remove and list them.
Why cats?
Because as long as you know how to implement basic operations, you can build it any kind of service you may need:supermarket orders, auction items, taxis, you name it. So, why not cats?
Why Kotlin?
Modern, productive and highly pragmatic language
Type safe
Null-safe
Generics that actually make sense
Intuitive
Extensible
Highly concurrent:Kotlin uses coroutines on top of best-in-class JITprovided by the JVM, that makes it one of the most efficient and concurrent languages nowadays
Rich ecosystem:be it PostgreSQL, Kafka or RabbitMQ, the most solid libraries are written for the JVM. And Kotlin is able to make use of all of them
Why this course?
There are many good tutorials and books about Kotlin programming language nowadays. But most of them make the assumption that you're either and Android developer or at least familiar with Java programming language and its ecosystem.
This course make no such assumptions. If you're and experienced PHP, Python, Ruby or NodeJS developer, with zero Java knowledge, this course was build with you in mind.
What you need to know:
Some kind of web technology, be it JavaScript, PHP, Ruby or Python. I expect you to be familiar with terms like Request, Response, JSON and HTTP headers at the very least.
Familiarity with Git. I’ll provide you with a link to the relevant branch on GitHub after most of the videos, and I’ll show you commands that I use, but I won’t dive deep into what they do.
Basic SQL and Docker knowledge is useful, but not mandatory.
What this course covers:
Basics of Kotlin programming language
Dependency management with Gradle
Ktor web framework
Testing with Kotlin
Working with databases using Exposed DSL
Running Kotlin inside Docker container and Docker Compose
Deploying Kotlin to Heroku
Exposing GraphQLAPIwith Kotlin
What this course doesn't cover:
Coroutines
Building UI in Kotlin
CI tools
Security
Each of them is a large topic by itself, and I wanted to keep this course as focused as possible, so you’ll be able to produce a working and well tested application in an hour or two.


We consider the value of this course from multiple aspects, and finally summarize it for you from three aspects: personal skills, career development, and further study:
(Kindly be aware that our content is optimized by AI tools while also undergoing moderation carefully from our editorial staff.)
Course Overview
Welcome to Web Development with Kotlin! In this course, you will learn how to build a microservice using Kotlin programming language and Ktor framework, then deploy it to Heroku. You will be able to add new cats, remove and list them. This course is designed for developers with some kind of web technology background, such as JavaScript, PHP, Ruby or Python, and basic knowledge of Git, SQL and Docker.

Possible Development Directions
This course will provide you with the necessary skills to build a microservice with Kotlin. You will learn the basics of Kotlin programming language, Ktor web framework, working with databases using Exposed DSL, dependency management with Gradle, testing with Kotlin, working with GraphQL, running Kotlin inside Docker container and Docker Compose, and deploying Kotlin service to Heroku. With these skills, you can build any kind of service you may need, such as supermarket orders, auction items, taxis, etc.

Related Learning Suggestions
If you want to further develop your skills in Kotlin programming language, you can explore more tutorials and books about Kotlin. You can also look into other web frameworks such as Spring Boot, Vert.x, and Micronaut. Additionally, you can learn more about databases, such as PostgreSQL, Kafka or RabbitMQ, and how to make use of them.