All Questions
161 questions
3
votes
2
answers
223
views
Why do I need an authorisation server if my micro services can validate JWTs directly?
I'm working on a Spring-based micro service project and considering different approaches for handling authentication and authorisation. Instead of setting up a dedicated authorisation server, I’m ...
- 41
0
votes
0
answers
69
views
Disable tenants in multi tenant SaaS app
I am building an app where I have tenants and each tenant can have multiple users. The users can do multiple things in the application and these functionalities also are kind of independent from each ...
- 37
3
votes
3
answers
1k
views
Should business logic classes be POJO only?
I read about three-tier architecture and I have a question: I read that in business logic (that is, what is in logic tier) there should be POJO classes, but in most Spring manuals these classes are ...
- 43
6
votes
3
answers
660
views
Hexagonal Architecture + Domain Driven Design. How to perform a correct implementation?
Currently, I am trying to implement these two architectures together with Java and Spring (although technology shouldn't matter I think).
But I'm encountering problems getting them to work together.
I ...
- 171
0
votes
2
answers
221
views
Where perform mapping in strict Domain-Driven Design?
I want to create an example application where we use a strict domain-driven design and layering (controller, service, repository). Most notably, we have a clear distinction between the domain and the ...
- 9
-2
votes
1
answer
158
views
Spring/Java multiple shared modules for different databases
I'm implementing a software based on the micro-service architecture using Spring/Java. Each micro-service connects to either a PostgreSQL or a MongoDB database. Is it standard practice to have a ...
0
votes
1
answer
126
views
Where to put getOrSave responsibility?
I have many repeated parts of service logic which just fetches object if it exists or returns a newly saved one.
I want to move it from service because it just clutters up the logic. But I do not ...
- 207
2
votes
3
answers
922
views
How can I avoid duplicate annotations when validating both Entity and DTOs?
I am using the Spring Boot framework to create a RESTFUL API and I need a way to avoid the duplication of validation rules when using multiple DTOs as request/response objects for my endpoints.
Using ...
-3
votes
1
answer
147
views
Learn a framework on a project, or mix languages between backend services [closed]
I am designing my next project, which will do various domain-specific tasks, but all that will be controlled and used via a generic crud web app.
I have been professionally using Java with Spring for ...
- 13
0
votes
0
answers
117
views
Spring data exchange between components?
Please advise me what pattern to use in following case:
I have a Java/Spring Boot application. There is a component with @KafkaListener method which receives Kafka Messages on CRUD of various subject ...
- 107
0
votes
1
answer
119
views
Should I use method overloading or method overriding when creating converter service
In a Java Spring API, I'm implementing GeoJson Conversion Service to convert different types to geojson, I have GeoJsonConversionService interface, and one implementation is ...
- 103
1
vote
1
answer
566
views
The recommended Spring Boot project structure leads to repetitive code
When implementing projects in Spring Boot (especially CRUD applications), I often find myself writing a lot of repetitive code that just calls functions and services from lower layers. For example, ...
- 13
0
votes
2
answers
745
views
Microservices - create post for logged in user
I am working on a small project with microservices architecture in Spring Boot. As to not make unnecessary calls to users-microservice, I have duplicated some necessary User data (id, name, summary, ...
- 1
-1
votes
1
answer
290
views
API request and response from event consumer
How to expose an API using the traditonal request-response style while internally it handles it in event driven way (pure or partially event driven), given that if callback style may not be possible ...
- 109
1
vote
4
answers
1k
views
Are static classes/methods good for pure business logic?
I have a service class that performs some operations.
One of the operations is a piece of code long enough to warrant extracting to a new class and unit test it in isolation:
@Service
public class ...
- 119