Ehcache 2 is not expiring after ttl time end - spring-boot

Question

I have set expiry time as 5 minutes, but after 5 minutes , the value is picked form the cache it self not calling the actual method. The cache is not getting expired after ttl completion.
CacheConfig.java
#Configuration
#EnableCaching
public class CacheConfig {
}
CacheEventLogger.java
public class CacheEventLogger implements CacheEventListener<Object, Object> {
// ...
Logger log = LoggerFactory.getLogger(CacheEventLogger.class);
#Override
public void onEvent(
CacheEvent<?, ?> cacheEvent) {
log.info("caching event key={}, oldValue={}, newValue={}",
cacheEvent.getKey(), cacheEvent.getOldValue(), cacheEvent.getNewValue());
}
}
NumberController.java
#RestController
#RequestMapping("/number")
public class NumberController {
// ...
Logger log = LoggerFactory.getLogger(NumberController.class);
#Autowired
private NumberService numberService;
#GetMapping(path = "/square/{number}")
public String getSquare(#PathVariable Long number) {
log.info("call numberService to square {}", number);
return String.format("{\"square\": %s}", numberService.square(number));
}
}
NumberService.java
#Service
public class NumberService {
Logger log = LoggerFactory.getLogger(NumberService.class);
// ...
#Cacheable(value = "squareCache", key = "#number", condition = "#number>10")
public BigDecimal square(Long number) {
BigDecimal square = BigDecimal.valueOf(number).multiply(BigDecimal.valueOf(number));
log.info("square of {} is {}", number, square);
return square;
}
}
ehcache.xml
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.ehcache.org/v3"
xmlns:jsr107="http://www.ehcache.org/v3/jsr107"
xsi:schemaLocation="
http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.0.xsd
http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.0.xsd">
<cache alias="squareCache">
<key-type>java.lang.Long</key-type>
<value-type>java.math.BigDecimal</value-type>
<expiry>
<ttl unit="minutes">5</ttl>
</expiry>
<listeners>
<listener>
<class>com.shruti.cache.CacheEventLogger</class>
<event-firing-mode>ASYNCHRONOUS</event-firing-mode>
<event-ordering-mode>UNORDERED</event-ordering-mode>
<events-to-fire-on>CREATED</events-to-fire-on>
<events-to-fire-on>EXPIRED</events-to-fire-on>
<events-to-fire-on>EVICTED</events-to-fire-on>
</listener>
</listeners>
<resources>
<heap unit="entries">200</heap>
<offheap unit="MB">100</offheap>
</resources>
</cache>
</config>
application.properties
spring.cache.jcache.config=classpath:ehcache.xml
POM.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.shruti</groupId>
<artifactId>cache</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>cache</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<log4j2.version>2.17.1</log4j2.version>
<ehcache.version>3.6.2</ehcache.version>
<cache.version>1.1.0</cache.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>javax.cache</groupId>
<artifactId>cache-api</artifactId>
<version>${cache.version}</version>
</dependency>
<dependency>
<groupId>org.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>${ehcache.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>