Episode 2 #

This time we’ll start writing actual apps. We need to pick one subject and do the app for it.

Every year we pick something different:

Dependencies we'll start with ↕

web
h2
spring-data
actuators
configuration processor
lombok
liquibase
- You need to setup liquibase to avoid it failing:
- application.properties
- initial changelog files

No we’ll import the app and start adding features, one by one.

The coding part ↕

Define rules for your URIs
- create, read, delete, update - CRUD
- What would be a good way to define URIs ?
  - REST ?! Why ?
Create Controller functions for CRUD with return null; implementations
Create a getAllEntities endpoint
- Let this endpoint return all entities
- Define the main entity
- Create first services
- Create the repository
Decide on how to organize the code:
- By layer: controllers, services, repositories, entities, etc.
- By feature: houses, products, users (each containing its own controllers, services, etc.)
- Read more here: Martin Sandin / Four Strategies for Organizing Code

During this time we’ll touch lots of patterns. Most of them are very basic, yet very powerful.

Patterns, concepts and things ↕