ehcache.xml

<config
        xmlns:jsr107='http://www.ehcache.org/v3/jsr107'
        xmlns='http://www.ehcache.org/v3'>
    <service>
        <jsr107:defaults enable-management="true" enable-statistics="true"/>
    </service>
    <!-- file persistance enabling--> 
    <persistence directory="./cache"></persistence>
    <!-- the 2 caches we will create-->
    <cache alias="AlertsConfig" uses-template="config-cache"/>
    <cache alias="Alerts" uses-template="alerts-template"/>
      <!-- the config cache tenplate-->
    <cache-template name="config-cache">
        <listeners>
            <listener>
                 <!-- the the main cache event listener-->
                <class>com.demo.alertmanager.services.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>UPDATED</events-to-fire-on>
                <events-to-fire-on>EXPIRED</events-to-fire-on>
                <events-to-fire-on>REMOVED</events-to-fire-on>
                <events-to-fire-on>EVICTED</events-to-fire-on>
            </listener>
        </listeners>
        <resources>
            <heap>1</heap>
            <offheap unit="MB">1</offheap>
            <disk persistent="true" unit="MB">100</disk>
        </resources>
    </cache-template>

    <cache-template name="alerts-template">
        <listeners>
            <listener>
                <class>com.demo.alertmanager.services.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>UPDATED</events-to-fire-on>
                <events-to-fire-on>EXPIRED</events-to-fire-on>
                <events-to-fire-on>REMOVED</events-to-fire-on>
                <events-to-fire-on>EVICTED</events-to-fire-on>
            </listener>
        </listeners>
        <resources>
          <heap>1</heap>
            <offheap unit="MB">1</offheap>
            <disk persistent="true" unit="MB">100</disk>
        </resources>
    </cache-template>

</config>