Call is not going to fallback method of Resilience4 Circuit breaker - spring

Question

I am using Resilience4j Circuit breaker version: '1.4.0 with Spring boot version 2.0.6 and my problem is - fallback method is not working. the call is not going to the fallback method.
Below is my code :
#Override
#CircuitBreaker(name="mainService",fallbackMethod = "callFallback")
public JSONObject callService(JSONObject rawRequest) throws TimeoutException {
...
throw new TimeoutException("Time occured while calling
service");
...
}
-- and fallback method :
private JSONObject callFallback(JSONObject rawRequest,Throwable t){
System.out.println("Inside fallback method callNsFallback,
cause"+t.toString());
logger.info("Inside fallback method callFallback,
cause - {}",t.toString());
return rawRequest;
}
--Configurations in application.yml
resilience4j:
circuitbreaker:
configs:
default:
registerHealthIndicator: true
ringBufferSizeInClosedState: 5
ringBufferSizeInHalfOpenState: 3
slidingWindowSize: 10
minimumNumberOfCalls: 5
permittedNumberOfCallsInHalfOpenState: 3
automaticTransitionFromOpenToHalfOpenEnabled: true
waitDurationInOpenState: 1s
failureRateThreshold: 50
eventConsumerBufferSize: 10
recordExceptions:
- java.util.concurrent.TimeoutException
instances:
mainService:
baseConfig: default

Answer 1

The possible reasons could be you are missing some required dependencies. Here I am sharing the dependencies and the yaml configuration which were working for me.
pom.xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>io.github.resilience4j</groupId>
<artifactId>resilience4j-spring-boot2</artifactId>
<version>1.7.1</version>
</dependency>
</dependencies>
application.yml
resilience4j:
circuitbreaker:
instances:
menu-service:
registerHealthIndicator: true
eventConsumerBufferSize: 10
automaticTransitionFromOpenToHalfOpenEnabled: true
failureRateThreshold: 50
minimumNumberOfCalls: 5
permittedNumberOfCallsInHalfOpenState: 1
slidingWindowSize: 10
waitDurationInOpenState: 2s
slidingWindowType: COUNT_BASED
management:
health:
circuitbreakers:
enabled: true
endpoints:
web:
exposure:
include: health
endpoint:
health:
show-details: always

Answer 2

I have been missing below dependency. It worked after adding and fallback method was called!
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>