Use of annotations - @EnableScheduling and @Scheduled
@EnableScheduling - Enables Spring's scheduled task execution capability. Declare this annotation on @Configuration classes and this enables detection of @Scheduled
@EnableScheduling - Enables Spring's scheduled task execution capability. Declare this annotation on @Configuration classes and this enables detection of @Scheduled
@Configuration
@EnableScheduling
public class AppConfig {
// various @Bean definitions
}
@Scheduled - Three flavors
@Scheduled(fixedDelay =30000)
public void execute() {//Do Something here }
@Scheduled(fixedRate=30000)
public void execute() {//Do Something here }
@Scheduled(cron="0 0 * * * *")
public void execute() {//Do Something here}
Cron expressions
- "0 0 * * * *" = the top of every hour of every day.
- "*/10 * * * * *" = every ten seconds.
- "0 0 8-10 * * *" = 8, 9 and 10 o'clock of every day.
- "0 0/30 8-10 * * *" = 8:00, 8:30, 9:00, 9:30 and 10 o'clock every day.
- "0 0 9-17 * * MON-FRI" = on the hour nine-to-five weekdays
- "0 0 0 25 12 ?" = every Christmas Day at midnight
- "0 30 14 * * ?"=every day at 2:30 PM
