1. Git

• used branches
• used merges
• tried out Gitflow

2. UML

1. ERM
2. Sequence Diagrams
   1. Sequence Diagram addItemList (manual)
   2. Sequence Diagram addItemList (generated)
   3. Sequence Diagram addUserToList (generated)
   4. Sequence Diagram registerUser (generated)
3. Component Diagram

3. Event Storming & DDD

Miro Board Event Storming

4. Metrics

SonarQube (test coverage tried with Jacoco but did not work)

5. Clean Code

Cheat Sheet (Java)

1. see project structure
2. see any Class
3. e.g. by using streams (see e.g. addUserToList)
4. see entity classes or services
5. see this Enum
6. e.g. using SpringBoot
7. see services ( e.g. ItemListService)
8. see tests

6. Build Management

Maven:

• multi-module
• calls tests automatically
• generated API docs with springdoc-openapi-ui as YAML (Maven dependency)

7. Tests

Unit Tests:

• ItemListServiceTest
• ListItemServiceTest
• UserServiceTest

Integration Tests:

• ListItemRepositoryTest
• Endpoint Tests - Overview (manual via Postman)
• Endpoint Test - registerUser (POST) (manual via Postman)

8. Build Management CI/CD

Used Jenkins and a pipeline to build from Github on a local server with a Jenkins file.

9. IDE

Intellij:

• Setup
• Debugging

Favorite shortcuts (using old Eclipse keymap):

• Ctrl+Space - Autocomplete (of course)
• Ctrl+Shift+Space - QuickDoc
• Alt+Shift+R - Refactor
• Ctrl+Shift+F - Auto-Format
• Ctrl+Shift+N - Generate Getter/Setter, Constructor etc. (custom)

10. DSL

• example 1 (Builder Pattern)
• example 2 (RegEx)
• example 3 (SQL)

11. Functional Programming

(mostly) side effect free functions & the use of higher-order functions & functions as parameters and return values & use closures / anonymous functions:

• example 1
• example 2

(annotated with // functional programming example)

only final data structures:

• example 3 (e.g. constructor parameters)

next features to be added:

• user authentication
• frontend