Introduction to Backend development with Kotlin & Micronaut

Name: Introduction to Backend development with Kotlin & Micronaut
Rating: 3.6 (12 reviews)

Learn how to build fast, Lightweight and reactive applications with Micronaut, Kotlin, Redis, JDBC/JOOQ, and Kafka

Created byOmasirichukwu Udeinya

Last updated 4/2023

English

What you'll learn

How to set up a development environment for Micronaut
How to Building a simple REST API
Test driven development, Unit & Integration Testing
Integrate with a database using Micronaut Data-JDBC
Integrate with a database using JOOQ
Integrate with Apache Kafka using Micronaut Kafka
Integrate with Redis, and Cache an endpoint.
Integrate with MongoDB, and perform common operations.

Course content

11 sections • 41 lectures • 3h 51m total length

Introduction2:35
In this section, you will get an overview of Micronaut, a modern framework for building microservices and serverless applications with Kotlin.
You will learn about the main features and benefits of Micronaut, such as dependency injection, configuration management, HTTP client and server, etc. You will also learn about some of the popular tools and technologies we will work with in this course such as Kafka, MongoDB, JOOQ, Micronaut Data JDBC, and Redis
Creating a Micronaut Project3:06
In this lecture, you will learn how to create and configure a simple Micronaut project from scratch.

Entities and Data Transfer Objects3:33
In this lesson, you will create a simple product entity class that will represent data in your database.
Repositories Save - Memory database2:08
In this lesson, you will learn how to create a simple repository for a database table. We will start to implement common functions for creating, reading, updating and deleting data from the database.
Repository Test9:32
You will learn how to write simple tests for the save function.
Repository List - Memory database7:46
In this lecture, you will start implementing a list function for your repository. You will learn how to write an appropriate test for your list function.
Repository Update - Memory database10:44
In this lecture, you will learn how to implement an update function, and write a test using Micronaut Test and Junit5
Repository Delete - Memory database6:34
In this lecture, you will write a test for a delete function with Micronaut Data JDBC, and then make the test pass, by implementing a working delete function.

Controller GET15:47
In this lecture, you will learn how to implement a working controller GET endpoint. You will learn about some possible causes for common errors you could encounter during implementation. You will also learn how to write appropriate tests for the endpoint.
Controller Save3:36
In this lecture, you will learn how to create a test for a POST endpoint using Micronaut Test, Micronaut Http client and Junit.
Controller POST implementation4:52
In this lesson, you will learn how to implement a working POST endpoint and make your test to pass.
Controller PUT Test8:09
In this lecture, you will learn how to create a test for a PUT endpoint using Micronaut Test, Micronaut Http client and Junit.
Controller PUT Implementation1:09
In this lecture, you will learn how to implement a working PUT endpoint. Your endpoint implementation will make your test to pass, and it will successfully update database records as specified.
Controller DELETE Test3:03
In this lecture, you will learn how to create a test for a DELETE endpoint using Micronaut Test, Micronaut Http client and Junit.
Controller DELETE Implemenation2:25
In this lecture, you will learn how to implement a DELETE endpoint, and make the test to pass.
Controller GET (List) Test1:55
In this lecture, you will learn how to create a test for a GET endpoint that returns a list of items. You will make use of Micronaut Http client and Junit.
Controller GET (List) Implementation1:10
In this lecture, you will learn how to implement a GET endpoint that returns a list of items, and make the test written in our previous lecture to pass.

Database access with JDBC4:28
In this lecture, we will implement a simple product repository using Micronaut Data JDBC. Your repository will have basic functionality like CREATE, READ, UPDATE, and DELETE for interacting with your underlying database management system.
Serving DB data via controller/jdbc5:24
In this lecture, you will learn how to implement a simple endpoint that retrieves data from the database and serves it to clients via the endpoint.

Setup and configure Jooq11:22
In this lecture, you will learn how to install and configure JOOQ for your Micronaut Project.
Configuring Jooq db connection5:12
In this lecture, you will learn about Providers and how to create a DSLContext provider to allow JOOQ to connect to the database and execute queries.
Repository - save, findbyId6:52
In this lecture, we will create a simple repository class that makes use of JOOQ.
Repository List with JOOQ3:45
In this lecture, you will learn how to implement a list function with Micronaut JOOQ, and write a test using Micronaut Test and Junit5
Jooq repository update3:08
In this lecture, you will learn how to implement an update function with Micronaut JOOQ, and write a test using Micronaut Test and Junit5
JOOQ repository delete1:57
In this lecture, you will learn how to implement a delete function with Micronaut JOOQ, and write a test using Micronaut Test and Junit5
Jooq repository delete all2:34
In this lecture, you will learn how to implement a deleteAll function with Micronaut JOOQ, and write a test using Micronaut Test and Junit5
Controller get with jooq repository3:56
Implement a controller route using the Duke repository to persist data, adapting existing Jdbc tests for Duke, and validate that the get and post endpoints return a product DTO.

Kafka Setup and Configuration8:05
In this lecture, you will learn how to setup and configure Kafka for your project.
Kafka Client2:40
In this lecture, you will learn how to create a simple Kafka Client that can produce messages to a Kafka Topic.
Kafka Listener9:14
In this lecture, you will learn how to create a Kafka Listener, that can read messages from Kafka topics.
Kafka Integration testing7:56
In this lesson, you will learn how to test your Kafka setup, including your listeners and clients.
Kafka Processing4:12
In this lesson, you will learn how to implement a simple kafka processor. You will read messages from a Kafka Topic and persist the data into a database.
Kafka Processing Test5:32
In this lecture, you will learn how to write integration tests for your Kafka processors.

Requirements

Knowledge of the Kotlin programming language (optional)
Familiarity with SQL and database management systems.
Understanding of microservices architecture and RESTful API design
Exposure to Kafka and message-based systems (optional but recommended)
Familiarity with Dependency Injection (optional)

Description

In this course, you will learn how to use Micronaut and Kotlin to create fast, lightweight and reactive web applications.

Micronaut is a modern framework for building microservices and serverless applications with Kotlin. It offers compile-time dependency injection, AOP, configuration management, HTTP client and server, and GraalVM support.

Kotlin is a concise and expressive language that runs on the JVM and can interoperate with Java. It offers many features that make web development easier and more enjoyable, such as null safety, data classes, coroutines, extension functions, and DSLs.

You will explore the main features and benefits of Micronaut and Kotlin through a series of hands-on exercises. You will learn how to create REST APIs with Micronaut and test your applications with Micronaut Test and JUnit 5.

You will also learn how to use Micronaut Data to interact with relational (E.g. MySQL/Postgres) and non-relational (E.g., MongoDB) databases.

This course is suitable for developers who have some basic knowledge of Kotlin and web development, as well as those who want to explore new frameworks and tools. By the end of this course, you will have a solid understanding of how to use Micronaut and Kotlin to create scalable and resilient web applications.

Who this course is for:

Developers who want to learn how to use Micronaut and Kotlin to create fast, lightweight and reactive web applications.
Developers who are interested in learning about data management and repository development in Micronaut with Kotlin
Beginners who have some basic knowledge of Kotlin and web development
Intermediate or advanced developers who want to explore new frameworks and tools.

Introduction to Backend development with Kotlin & Micronaut

What you'll learn

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Course content

Introduction2 lectures • 6min

Introduction to Micronaut Controllers2 lectures • 7min

Micronaut Configuration1 lecture • 10min

Data Persistence and Controller Basic6 lectures • 40min

Controllers9 lectures • 42min

Flyway Setup1 lecture • 9min

Micronaut Data JDBC2 lectures • 10min

JOOQ integration8 lectures • 39min

Redis Integration2 lectures • 14min

Kafka Integration6 lectures • 38min

Requirements

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