These tutorials target Micronaut Framework 3. Read, Guides for Micronaut Framework 4.

micronaut-data

Learn how to connect a Micronaut Data JDBC application to a Microsoft Azure Database for MySQL
Learn how to deploy a MySQL Micronaut Database Application to Oracle Cloud.
Learn how to create secrets in Azure Key Vault and easily access them in a Micronaut application.
Learn how to access a database with Micronaut JDBC repositories.
Learn how to access a MongoDB database asynchronously with Micronaut Data.
Learn how to access a MongoDB database with Micronaut Data and the MongoDB Sync driver.
Learn how to access a database with Micronaut R2DBC repositories.
Build a TODO application with Micronaut GraphQL.
This guide shows how to use Micronaut Data from a Spring Boot application.