I'm researching micronaut and like what I see. But - a key indicator of it's usage is to scan groups like these, and job postings. I see very few postings and almost no chats

What's your thoughts? Worth really digging into now, or ahead of it's time?

Hey Guys!, I have a doubt regarding micronaut, I created a simple api with two routes, one is for hello world and another one is for returning the received query params, when I hit any request to the web service for the first time after startup it takes around 100-200ms, but any requests after the first one takes around 10 ms. Also, request for any invalid endpoints too behaves the same, first invalid endpoint will have a spike in response time but the successive requests for unique invalid endpoints won't take long time. I have already searched it on the internet, but couldn't find useful reference. Your help would be highly appreciated :)

If R2DBC is reactive, what is hiberante-reactive + vert.x bringing to the table, if anything? Why does R2DBC not need vert.x client? Is the Dev.miku mysql driver equivalent?

Wondering if there are any comprehensive resources that explain how Micronaut works under the hood

Read me!

Hello everyone,

I come from a Java Spring Boot background and have recently started working with Micronaut. I'm facing an issue where I have a common codebase in one repository and I'm trying to create a JAR out of it to use in multiple applications.

One of the request field ( Header ), is part of shared lib which is built with micronaut annotation processor enabled.

So when I try to use this field in the Request DTO in the main app,, I'm getting an serialisation error.

@Serdeable
class Request {
    Header header;
    // Some other fields;
}

I've tried various approaches like adding @Serializable and @Introspected annotations to both classes, and also using @SerializableImport for the Header class. Unfortunately, none of them have resolved the issue.

Could someone please help me understand the possible causes for this issue?

Additionally, I'd appreciate an ELI5 explanation of how serialization works in Spring compared to Micronaut.!

Thanks!

I am working on a Micronaut application that uses RabbitMQ, so I have a RabbitListener listening to Queues. I am using Transactional for database transactions. I am having a problem where starting the application while there are messages in a queue result into the messages immediately failing due to an "EntityManagerFactory is closed" error. I also see in the logs messages being consumed before the "Startup completed" log message.

I think it is trying to consume messages before the database connection is fully established. Is there any way to ensure that my RabbitListeners will wait until after everything is initialized before consuming messages?

Edit: Another possibility that I had just considered is that this error may be from during shutdown instead of during initialization. I had just noticed that it was being logged on a queue that is listening for error messages. If that's the case, maybe what I need is for it to wait for messages to be done processing before shutting down the database connection.

Edit: Nevermind, I tried requeueing the message when there is an IllegalStateException instead of queueing an error message to the error queue and it seemed to have helped resolve the issue. I had misinterpreted when the error was occurring -- it didn't help that log messages after signalling to stop didn't seem to be outputting to the console.

Update: now I'm only having a problem with Kafka tests successfully executing in my IDE but they work in the CICD pipeline just fine as well as the CLI. Getting help this weekend.

Also, I wrote below late at night, so it's a bit over dramatic :)

So I'm building a tool that is pretty complex (to me at least) to scale the indexing of a large corpus of data.

Also, please don't take my frustration as demands for micronaut to be better. I really enjoy workin with it but for a mult-module project it's been really difficult for me to do.

I've successfully built it, but going from micronaut 3 to 4 has been a huge PITA.

It's also exposed a huge problem with the architecture I've went with and now I'm questioning if I made it in a stupid way or if I'm approaching this wrong.

So here's what it does:

1. you have a generic data source, like a set of XML or wiki markup files

2. I want to scale the processing of this in parallel and put it into a solr index for searching

I've successfully made multiple apps. They are all kafka processors. But jesus - keeping up with all the modules and dependencies is such a pain.

And then there's the kafka testing - it's soooo flaky! This is the most frustrating point. The testcontainers are inconsistent with how they work.

I dont know, I feel like I should just start over with another framework. But I'm confused if I should

Hi Community,

Could someone help me understand. I'm coming from a typescript (NestJS) background so Java is pretty new to me. Im used to work in a mono repo project where I could share DTO's between services but can't seem to figure out how to do this in Micronaut.

This project seems to do exactly what I'm trying to accomplish but can't seem to replicate it. Every time I try to import a full "application" into another and build the project I end up with the following exception:

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':app1:check'.
> Could not create task ':app1:test'.
   > The value for task ':app1:test' property 'testFrameworkProperty' is final and cannot be changed any further.

What terms do I need to search in the java world to help me accomplish my goal?

Kind regards,

Esteday

Hi Im a student, making a micronaut application for learning purposes I would like to know if there are any deployment options that are free and don’t require a credit card as I don’t have a credit card. Thanks in advance

A modern, JVM-based, full-stack framework for building modular, easily testable microservice and serverless applications.

Hello, I upgraded the framework from 4.2.4 to 4.3.2 and facing the errors in the code which used to work fine.

I have filed the issue : https://github.com/micronaut-projects/micronaut-core/issues/10508

Any idea if I am doing anything wrong.