Spring Boot scheduling and batch jobs

@Scheduled basics

@Configuration
@EnableScheduling
public class SchedulingConfig {
}

@Component
public class ReportJob {

    @Scheduled(cron = "0 0 2 * * *") // 2 AM daily, server's default zone unless `zone` is set
    public void generateDailyReport() { ... }

    @Scheduled(fixedRate = 60_000) // every 60s, measured from the start of the previous invocation
    public void pollQueue() { ... }