Lifecycle (starting, shutting down) of a ScheduledExecutorService inside a Spring Signleton
I'm using a ScheduledExecutorService inside a Spring Singleton. It executes a periodical check that's scheduled to run every x minutes. I'm lazily (or half-lazily) initializing the Singleton member variables (the Executor) by implementing a ApplicationListener<ContextStartedEvent>#onApplicationEventmethod - that created the ScheduledExecutorService and assigns a task.
I need to deal with the shutdown of the ExecutorService, and wonder how to do that properly. I do know that Spring has it's context shutdown process, and wonder whether it's reasonable to call the shutdown somewhere from there.
What exactly happens if the ExecutorService doesn't get shutdown, and the Server is being closed or terminated? Doesn't the JVM just clears all memory related to this program?
Thanks
spring executorservice applicationcontext application-shutdown
asked Nov 11 at 16:54
Ido Gal
326721
add a comment |
I'm using a ScheduledExecutorService inside a Spring Singleton. It executes a periodical check that's scheduled to run every x minutes. I'm lazily (or half-lazily) initializing the Singleton member variables (the Executor) by implementing a ApplicationListener<ContextStartedEvent>#onApplicationEventmethod - that created the ScheduledExecutorService and assigns a task.
I need to deal with the shutdown of the ExecutorService, and wonder how to do that properly. I do know that Spring has it's context shutdown process, and wonder whether it's reasonable to call the shutdown somewhere from there.
What exactly happens if the ExecutorService doesn't get shutdown, and the Server is being closed or terminated? Doesn't the JVM just clears all memory related to this program?
Thanks
spring executorservice applicationcontext application-shutdown
asked Nov 11 at 16:54
Ido Gal
326721
1
docs.spring.io/spring/docs/current/spring-framework-reference/…
– JB Nizet
Nov 11 at 16:59
Thanks. I've implemented a "shutdown"/"destroy" method according to the documentation. I still can't figure out on which scenario Spring performs such a shutdown process. If I'm just stopping the web server, the method doesn't get called.
– Ido Gal
Nov 12 at 6:40
Why are you doing the scheduling yourself instead of using@EnableSchedulingwith an@Scheduledannotation. This way Spring will manage the executor for you. Also how are you shutting down the server, nicely or by doing akill?
– M. Deinum
Nov 12 at 7:26
add a comment |
I'm using a ScheduledExecutorService inside a Spring Singleton. It executes a periodical check that's scheduled to run every x minutes. I'm lazily (or half-lazily) initializing the Singleton member variables (the Executor) by implementing a ApplicationListener<ContextStartedEvent>#onApplicationEventmethod - that created the ScheduledExecutorService and assigns a task.
I need to deal with the shutdown of the ExecutorService, and wonder how to do that properly. I do know that Spring has it's context shutdown process, and wonder whether it's reasonable to call the shutdown somewhere from there.
What exactly happens if the ExecutorService doesn't get shutdown, and the Server is being closed or terminated? Doesn't the JVM just clears all memory related to this program?
Thanks
spring executorservice applicationcontext application-shutdown
asked Nov 11 at 16:54
Ido Gal
326721
I'm using a ScheduledExecutorService inside a Spring Singleton. It executes a periodical check that's scheduled to run every x minutes. I'm lazily (or half-lazily) initializing the Singleton member variables (the Executor) by implementing a ApplicationListener<ContextStartedEvent>#onApplicationEventmethod - that created the ScheduledExecutorService and assigns a task.
I need to deal with the shutdown of the ExecutorService, and wonder how to do that properly. I do know that Spring has it's context shutdown process, and wonder whether it's reasonable to call the shutdown somewhere from there.
What exactly happens if the ExecutorService doesn't get shutdown, and the Server is being closed or terminated? Doesn't the JVM just clears all memory related to this program?
Thanks
spring executorservice applicationcontext application-shutdown
spring executorservice applicationcontext application-shutdown
asked Nov 11 at 16:54
Ido Gal
326721
asked Nov 11 at 16:54
Ido Gal
326721
asked Nov 11 at 16:54
Ido Gal
326721
asked Nov 11 at 16:54
Ido Gal
326721
asked Nov 11 at 16:54
Ido Gal
326721
326721
1
docs.spring.io/spring/docs/current/spring-framework-reference/…
– JB Nizet
Nov 11 at 16:59
Thanks. I've implemented a "shutdown"/"destroy" method according to the documentation. I still can't figure out on which scenario Spring performs such a shutdown process. If I'm just stopping the web server, the method doesn't get called.
– Ido Gal
Nov 12 at 6:40
Why are you doing the scheduling yourself instead of using@EnableSchedulingwith an@Scheduledannotation. This way Spring will manage the executor for you. Also how are you shutting down the server, nicely or by doing akill?
– M. Deinum
Nov 12 at 7:26
add a comment |
1
docs.spring.io/spring/docs/current/spring-framework-reference/…
– JB Nizet
Nov 11 at 16:59
Thanks. I've implemented a "shutdown"/"destroy" method according to the documentation. I still can't figure out on which scenario Spring performs such a shutdown process. If I'm just stopping the web server, the method doesn't get called.
– Ido Gal
Nov 12 at 6:40
Why are you doing the scheduling yourself instead of using@EnableSchedulingwith an@Scheduledannotation. This way Spring will manage the executor for you. Also how are you shutting down the server, nicely or by doing akill?
– M. Deinum
Nov 12 at 7:26
1
1
docs.spring.io/spring/docs/current/spring-framework-reference/…
– JB Nizet
Nov 11 at 16:59
docs.spring.io/spring/docs/current/spring-framework-reference/…
– JB Nizet
Nov 11 at 16:59
Thanks. I've implemented a "shutdown"/"destroy" method according to the documentation. I still can't figure out on which scenario Spring performs such a shutdown process. If I'm just stopping the web server, the method doesn't get called.
– Ido Gal
Nov 12 at 6:40
Thanks. I've implemented a "shutdown"/"destroy" method according to the documentation. I still can't figure out on which scenario Spring performs such a shutdown process. If I'm just stopping the web server, the method doesn't get called.
– Ido Gal
Nov 12 at 6:40
Why are you doing the scheduling yourself instead of using
@EnableScheduling with an @Scheduled annotation. This way Spring will manage the executor for you. Also how are you shutting down the server, nicely or by doing a kill?– M. Deinum
Nov 12 at 7:26
Why are you doing the scheduling yourself instead of using
@EnableScheduling with an @Scheduled annotation. This way Spring will manage the executor for you. Also how are you shutting down the server, nicely or by doing a kill?– M. Deinum
Nov 12 at 7:26
add a comment |
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1
docs.spring.io/spring/docs/current/spring-framework-reference/…
– JB Nizet
Nov 11 at 16:59
Thanks. I've implemented a "shutdown"/"destroy" method according to the documentation. I still can't figure out on which scenario Spring performs such a shutdown process. If I'm just stopping the web server, the method doesn't get called.
– Ido Gal
Nov 12 at 6:40
Why are you doing the scheduling yourself instead of using
@EnableSchedulingwith an@Scheduledannotation. This way Spring will manage the executor for you. Also how are you shutting down the server, nicely or by doing akill?– M. Deinum
Nov 12 at 7:26