diff --git a/apache-geode/src/main/java/com/baeldung/geode/functions/CustomerWithMaxAge.java b/apache-geode/src/main/java/com/baeldung/geode/functions/CustomerWithMaxAge.java
new file mode 100644
index 0000000000..ef729a1ac2
--- /dev/null
+++ b/apache-geode/src/main/java/com/baeldung/geode/functions/CustomerWithMaxAge.java
@@ -0,0 +1,39 @@
+package com.baeldung.geode.functions;
+
+import com.baeldung.geode.Customer;
+import org.apache.geode.cache.Region;
+import org.apache.geode.cache.execute.Function;
+import org.apache.geode.cache.execute.FunctionContext;
+import org.apache.geode.cache.execute.RegionFunctionContext;
+
+import java.util.Comparator;
+import java.util.Map;
+import java.util.Optional;
+
+public class CustomerWithMaxAge implements Function<Customer> {
+
+    public static final String ID = CustomerWithMaxAge.class.getSimpleName();
+
+    private static final long serialVersionUID = -6023734758827953742L;
+
+    @Override
+    public void execute(FunctionContext<Customer> context) {
+        RegionFunctionContext regionContext = (RegionFunctionContext) context;
+        Region<Integer, Customer> region = regionContext.getDataSet();
+
+        Comparator<Customer> ageComparator = Comparator.comparing(Customer::getAge);
+
+        Optional<Customer> customer = region.entrySet()
+            .stream()
+            .map(Map.Entry::getValue)
+            .max(ageComparator);
+
+        customer.ifPresent(c -> context.getResultSender()
+            .lastResult(c));
+    }
+
+    @Override
+    public String getId() {
+        return ID;
+    }
+}
diff --git a/apache-geode/src/test/java/com/baeldung/geode/GeodeSamplesIntegrationTest.java b/apache-geode/src/test/java/com/baeldung/geode/GeodeSamplesIntegrationTest.java
index 1eb71671a1..9c47d099da 100644
--- a/apache-geode/src/test/java/com/baeldung/geode/GeodeSamplesIntegrationTest.java
+++ b/apache-geode/src/test/java/com/baeldung/geode/GeodeSamplesIntegrationTest.java
@@ -1,5 +1,6 @@
 package com.baeldung.geode;
 
+import com.baeldung.geode.functions.CustomerWithMaxAge;
 import com.baeldung.geode.functions.PrimeNumber;
 import org.apache.geode.cache.Region;
 import org.apache.geode.cache.client.ClientCache;
@@ -138,6 +139,19 @@ public class GeodeSamplesIntegrationTest {
 
     }
 
+    @Test
+    public void whenExecuteFindEldestCustomerFunction_thenReturnTheEldestCustomer() {
+        Execution execution = FunctionService.onRegion(this.queryRegion);
+
+        ResultCollector<Customer, Customer> result = execution.execute(CustomerWithMaxAge.ID);
+        List<Customer> resultList = (List<Customer>) result.getResult();
+        assertNotNull(resultList);
+        assertEquals(1, resultList.size());
+
+        Customer customer = resultList.get(0);
+        assertEquals(Integer.valueOf(46), customer.getAge());
+    }
+
     @Test
     public void whenExecutePrimeNumberFunction_thenReturnOnlyPrimeNumbers() {