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

mongodb

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 use a non-blocking reactive streams MongoDB client with a Micronaut application
Tags: mongodb
Learn how to use a blocking MongoClient with a Micronaut application
Tags: mongodb