Hola,
Working on Scheduled tasks is a common thing for a Backend developer in Spring Boot. I created a @GitHub repo that talks about scheduling tasks in spring boot application.
App Functionality:
1) For every 5 seconds it creates a new CreditCard and persists that in H2 database.
2) For every 10 seconds it will fetch persisted CreditCards from DB.
Note: This is too simple and straight forward app which focuses only on purpose of scheduling jobs.
App Flow:
Check out below GitHub repo for code
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Gracias.