Is it possible to set expiry time using Apache Ignite in C++? - c++

Question

I am using the C++ thin client API and I want to have the data deleted from the cache after 5 minutes. I am connecting to ignite through docker and using the persistence storage. In the documentation for the C++ libraries, I cannot find anything relating to "expiry" and I tried adding the expiry option into the config xml file that my docker container reads in, but that didn't seem to work either. I put data into the cache and checked for the data after 5 minutes (I also checked 10, 20, 30 minutes later) and the data was still there.
Here is my config xml file:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="ignite.cfg" class="org.apache.ignite.configuration.IgniteConfiguration">
<!-- Enabling Apache Ignite Persistent Store. -->
<property name="dataStorageConfiguration">
<bean class="org.apache.ignite.configuration.DataStorageConfiguration">
<property name="defaultDataRegionConfiguration">
<bean class="org.apache.ignite.configuration.DataRegionConfiguration">
<property name="persistenceEnabled" value="true"/>
<property name="name" value="Default_Region" />
</bean>
</property>
</bean>
</property>
<property name="discoverySpi">
<bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
<property name="ipFinder">
<!-- Uncomment static IP finder to enable static-based discovery of initial nodes. -->
<!--<bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">-->
<bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder">
<property name="addresses">
<list>
<!-- In distributed environment, replace with actual host IP address. -->
<value>127.0.0.1:47500..47502</value>
</list>
</property>
</bean>
</property>
</bean>
</property>
</bean>
<bean class="org.apache.ignite.configuration.CacheConfiguration">
<property name="expiryPolicyFactory">
<bean class="javax.cache.expiry.CreatedExpiryPolicy" factory-method="factoryOf">
<constructor-arg>
<bean class="javax.cache.expiry.Duration">
<constructor-arg value="MINUTES"/>
<constructor-arg value="5"/>
</bean>
</constructor-arg>
</bean>
</property>
</bean>
</beans>

Answer 1

Yes, the c++ thin client doesn't support this feature at the moment.
I think you could either define a cache with expiration completely on the server-side or to define only a cache template https://apacheignite.readme.io/docs/cache-template with expiry policy and use it from a client.