springboot-demo/target/classes/com/example/demo/controller/AopEventController.class

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userService
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eventPublisher
+Lcom/example/demo/event/UserEventPublisher;	
userEventListener
*Lcom/example/demo/event/UserEventListener;	
performanceAspect
(Lcom/example/demo/aop/PerformanceAspect;	
rateLimitAspect
&Lcom/example/demo/aop/RateLimitAspect;
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FExplore cross-cutting behavior through AOP, events, and rate limiting.%&'()

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*Application events and listener decoupling3
Annotation-driven rate limiting5
	endpoints7

GET  /aop/aop9
GET  /aop/aop/stats;
GET  /aop/event=
POST /aop/event/publish?
GET  /aop/event/historyA
GET  /aop/ratelimitC
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AOP learning notes[
concepts]
'Aspect: a reusable cross-cutting module_
8Join point: a place where the program can be intercepteda
.Pointcut: the matcher that selects join pointsc
>Advice: code that runs before, after, or around the join pointe
4Weaving: combining the aspect with the target objectg
adviceTypesi
@Before for pre-checksk
@After for cleanupm
&@AfterReturning for successful resultso
@AfterThrowing for failuresq
/@Around for timing, wrapping, and total controls
useCasesu
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description<00>
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statistics
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;@EventListener reacts without tight coupling to the caller.<00>
@@Async lets slow follow-up work happen outside the request path.<00>
5Conditions help one listener focus on one event type.<00>
benefits<00>
Controllers stay smaller.<00>
!Listeners can grow independently.<00>
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#Side effects become easier to test.<00>

eventTypes
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publishUserEvent
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Event published successfully.<00>
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name
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userId<00>
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historySize
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total<00>
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rateLimitStatus
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