Ehcache 2 is not expiring after ttl time end

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>

Ehcache 2 is not expiring after ttl time end

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