Jira preformance - cost of event&listener Vs post function

[ayala nayman]

Hi

my questions is about Jira performance,

say I want to create an automation that will change parent Issue status , once a child issue status has changed (of course we are talking about specific transition and not all of them)

which is better for jira :

use an add-on functionality to preform the transition of the parent in a post function 

or use  an add-on functionality to through an event, catch it with a listner , and activate a script that will run the transition .

[Vladimir Taranchenko]

Using listener will be unsynchronised. Postfunction will be synchronised. I think, that postfunction will be better in this case. This case doesn't look like expensive for productivity.