Anotações no Spring
Anotações do Spring Boot com exemplos
https://javatechonline.com/spring-boot-annotations-with-examples/
spring-notes
https://github.com/ImGabreuw/spring-notes
How To Schedule A Task/Job In Java? : Spring Boot Scheduler
https://javatechonline.com/how-to-schedule-a-task-job-in-java-spring-boot-scheduler/