itzg/demo-spring-scheduled

This Spring Boot application demos Spring's @Scheduled annotation combined with Spring Boot externalized configuration processing.

Scheduling support is enabled with the @EnableScheduling annotation placed on any @Configuration or composing annotation such as @SpringBootApplication:

@SpringBootApplication
@EnableScheduling
public class DemoSpringScheduledApplication {

With the following property configuration in application.yml:

spring-scheduled:
  # rate can be a numerical milliseconds or ISO-8601 duration. The shorter form like 5s
  # is not supported by fixedRateString parsing.
  rate: PT5S

The following doSomething method will get invoked every 5 seconds

  @Scheduled(fixedRateString = "${spring-scheduled.rate}")
  public void doSomething() {
    log.info("Running periodic operation at {}", new Date());
  }