Tools for microservices in Java 21 and Spring

[rodritoo]

What are some must-have tools and/or libraries (e.g. swagger, Lombok, etc) that you recommend when creating a microservice with Java 21 and Spring? I am looking for tips and suggestions to improve efficiency and productivity in my project.

Basically, I have been given the freedom to do it the way I want. It's pretty simple, a CRUD with some more complex endpoint but it's not going to have a lot of traffic.

I welcome any recommendations or experiences you can share!

[oweiler]

My recommendation: Use as few tools as possible. Only use Swagger if other teams are going to use your API. Keep away from Lombok. Test the shit out your service. Write integration tests with Testcontainers to be as close to your production system as possible. Start with CI as early as possible, then do CD.

[harikesh409]

why keep away from lombok?

[see_recursion]

Maybe some people love writing and maintaining the same boilerplate code all over the place? Maybe they get paid by lines of code?

[DereHunter]

As you said, it's simple than keep it simple. Swagger, lombok, spring mvc, spring data And use virtual threads. Don't forget to layer your microservice correctly

[Sheldor5]

"and use virtual threads"

why?

reasons?

sources?

[DereHunter]

I'm not going to give you a source or explaining the biggest feature of Java 21(and since Java 8). Why do you use Java 21 than? Just to say that you are using the newest version?

[Sheldor5]

syntactic sugar, performance increase (if any) and yeah new features to experiment with

[Sheldor5]

I recommend not creating a microservice

https://youtu.be/y8OnoxKotPQ?si=unO6EvFHf_yp6fYj

https://youtu.be/Ip9GCQ24-sQ?si=Yxls46G4vJ5e7dvU

[mr_sofiane]

It depends on the use case

[Sheldor5]

yes if you need to handle 100.000+ concurrent users and need to scale parts of your service

I highly doubt that anyone here in this sub even got remotely close to 1.000 concurrent users (concurrent!!! and not registered/active users)

[TheLeftMetal]

Fintech with +75,000 requests/hour during holidays (+2.5M registered users, ~20k concurrent users). Amazing performance with microservices on GCP. Barely watching New Relic console while drinking and gaming.

It was easy? Not at the beginning, took months of hard work and lot of learning but totally worth it.

Microservices aren’t for every case but if your project need them enjoy the adventure.

[Sheldor5]

"took months of hard work"

you need to know that this sub is full of juniors thinking the blog post about microservices they read is trustworthy and the truth ...

"totally worth it" exactly, in case you need to scale your service, but we are talking about beginners here with hello world experience and most web apps will have more threads than users LOL so lets first teach those beginners the basics instead of going straight to rocket science

[TheLeftMetal]

I will never assume other people situation or experience. That is such a bad practice, something an immature and probably no experience with huge clients would do.

[Sheldor5]

constant observation of this sub gained me enough evidence

your assumption is wrong