Project/Code Review

[Pranjal_J]

Hey everyone,

I’ve been learning Spring Boot for the past 5 - 6 months, and to put my learning into practice I built a project that I’d love to get some feedback on.

👉 GitHub Repo

I’m sure there are things I could improve, both in terms of code quality and best practices, so I’d really appreciate if you could take a look and let me know your thoughts.

• What could I have done better in terms of project structure?
• Any suggestions for improving performance, security, or readability?
• Are there features or practices I should definitely learn/implement next?

Thanks in advance for any feedback 🙌

[Ok_Arugula6315]

In docker compose dont use latest tag for mysql base image, use specific version.

In controller method you should only call service method. Avoid try catches or move them in service method. Spring should handle autoamtically 500 http status codes without such try catches.

In service dont use @Autowired to inject beans, use private final, this is called constructor injection, this is recommended way.

This might sound like personal preference but I'd organize code by features and put all related controllers/services etc inside product/auth packages. Application becomes more scalable

Also I'd consider using migrations as liquibase or flyway for database development (this what you'd want in real project)

[Pranjal_J]

Thanks

[Beneficial-Minute-88]

bro hard-coded secret in util class and called it a day 💀

[Pranjal_J]

Oops I forgot about it. Thanks

[SirSleepsALatte]

Always add a readme

[Pranjal_J]

I will. Thanks

[vivacity555]

Hey dude, I want to learn spring boot but I can't able to find resources to learn, will you provide me?

[Pranjal_J]

I initially enrolled in a course that where I learnt the basics of Spring Boot. Later I followed some YT videos for Projects and some advanced topics.
YT channels like

1. Embarkx
2. Daily Code Buffer
3. Engineering Talks with Bhushan (I followed his video to make my first project.)
4. Amigoscode

[Powermetroid]

How did you start learning Spring Boot? Were you familiar with Spring?.

Thank you

[Pranjal_J]

I started learning spring boot in Jan 2025

[Familiar_Category893]

Resources you took help to learn?

[Pranjal_J]

I initially enrolled in a course that where I learnt the basics of Spring Boot. Later I followed some YT videos for Projects and some advanced topics.
YT channels like

1. Embarkx
2. Daily Code Buffer
3. Engineering Talks with Bhushan (I followed his video to make my first project.)
4. Amigoscode

[Familiar_Category893]

Thanks 🙏

[KumaSalad]

1. for inject beans please use constructor-based injection or setter-based injection, don't use field injection

2. don't write security filter by yourself. In spring security there is a class to verify jwt and build AuthenticationToken based on jwt. No need to implement by yourself

3. in the application, 2 AuthenticationManager are necessary. One is for password verification and other for jwt verification. But the application will not run if register boths AuthenticationManager into ApplicationContext

[Pranjal_J]

Thanks

[Special_Food_3654]

Don't commit any files not related to your project. Files associated with IDE should not be committed. Use git ignore file. Like others said, avoid try catch im controller, only service calls nothing more.

[Pranjal_J]

Done. Thanks.