diff --git a/spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryAutoConfiguration.java b/spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryAutoConfiguration.java
index 9e5cfac9448..a4b0f1c186f 100644
--- a/spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryAutoConfiguration.java
+++ b/spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryAutoConfiguration.java
@@ -29,6 +29,7 @@
 
 /**
  * @author Mick Semb Wever
+ * @author Jihoon Kim
  * @since 1.0.0
  */
 @AutoConfiguration(after = CassandraAutoConfiguration.class)
@@ -50,8 +51,8 @@ public CassandraChatMemory chatMemory(CassandraChatMemoryProperties properties,
 		if (!properties.isInitializeSchema()) {
 			builder = builder.disallowSchemaChanges();
 		}
-		if (null != properties.getTimeToLiveSeconds()) {
-			builder = builder.withTimeToLive(properties.getTimeToLiveSeconds());
+		if (null != properties.getTimeToLive()) {
+			builder = builder.withTimeToLive(properties.getTimeToLive());
 		}
 
 		return CassandraChatMemory.create(builder.build());
diff --git a/spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryProperties.java b/spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryProperties.java
index fc0f45e5ce3..57a1331c802 100644
--- a/spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryProperties.java
+++ b/spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryProperties.java
@@ -28,6 +28,7 @@
 
 /**
  * @author Mick Semb Wever
+ * @author Jihoon Kim
  * @since 1.0.0
  */
 @ConfigurationProperties(CassandraChatMemoryProperties.CONFIG_PREFIX)
@@ -45,7 +46,7 @@ public class CassandraChatMemoryProperties extends CommonChatMemoryProperties {
 
 	private String userColumn = CassandraChatMemoryConfig.DEFAULT_USER_COLUMN_NAME;
 
-	private Duration timeToLiveSeconds = null;
+	private Duration timeToLive = null;
 
 	public String getKeyspace() {
 		return this.keyspace;
@@ -80,12 +81,12 @@ public void setUserColumn(String userColumn) {
 	}
 
 	@Nullable
-	public Duration getTimeToLiveSeconds() {
-		return this.timeToLiveSeconds;
+	public Duration getTimeToLive() {
+		return this.timeToLive;
 	}
 
-	public void setTimeToLiveSeconds(Duration timeToLiveSeconds) {
-		this.timeToLiveSeconds = timeToLiveSeconds;
+	public void setTimeToLive(Duration timeToLive) {
+		this.timeToLive = timeToLive;
 	}
 
 }
diff --git a/spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryAutoConfigurationIT.java b/spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryAutoConfigurationIT.java
index abc4b6c4317..c1eba20a815 100644
--- a/spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryAutoConfigurationIT.java
+++ b/spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryAutoConfigurationIT.java
@@ -16,6 +16,7 @@
 
 package org.springframework.ai.autoconfigure.chat.memory.cassandra;
 
+import java.time.Duration;
 import java.util.List;
 
 import com.datastax.driver.core.utils.UUIDs;
@@ -37,6 +38,7 @@
 
 /**
  * @author Mick Semb Wever
+ * @author Jihoon Kim
  * @since 1.0.0
  */
 @Testcontainers
@@ -57,7 +59,7 @@ void addAndGet() {
 		this.contextRunner.withPropertyValues("spring.cassandra.contactPoints=" + getContactPointHost())
 			.withPropertyValues("spring.cassandra.port=" + getContactPointPort())
 			.withPropertyValues("spring.cassandra.localDatacenter=" + cassandraContainer.getLocalDatacenter())
-
+			.withPropertyValues("spring.ai.chat.memory.cassandra.time-to-live=" + getTimeToLive())
 			.run(context -> {
 				CassandraChatMemory memory = context.getBean(CassandraChatMemory.class);
 
@@ -84,6 +86,20 @@ void addAndGet() {
 					.isEqualTo(MessageType.ASSISTANT);
 				assertThat(memory.get(sessionId, Integer.MAX_VALUE).get(0).getContent()).isEqualTo("test answer");
 
+				CassandraChatMemoryProperties properties = context.getBean(CassandraChatMemoryProperties.class);
+				assertThat(properties.getTimeToLive()).isEqualTo(getTimeToLive());
+			});
+	}
+
+	@Test
+	void compareTimeToLive_ISO8601Format() {
+		this.contextRunner.withPropertyValues("spring.cassandra.contactPoints=" + getContactPointHost())
+			.withPropertyValues("spring.cassandra.port=" + getContactPointPort())
+			.withPropertyValues("spring.cassandra.localDatacenter=" + cassandraContainer.getLocalDatacenter())
+			.withPropertyValues("spring.ai.chat.memory.cassandra.time-to-live=" + getTimeToLiveString())
+			.run(context -> {
+				CassandraChatMemoryProperties properties = context.getBean(CassandraChatMemoryProperties.class);
+				assertThat(properties.getTimeToLive()).isEqualTo(Duration.parse(getTimeToLiveString()));
 			});
 	}
 
@@ -95,4 +111,12 @@ private String getContactPointPort() {
 		return String.valueOf(cassandraContainer.getContactPoint().getPort());
 	}
 
+	private Duration getTimeToLive() {
+		return Duration.ofSeconds(12000);
+	}
+
+	private String getTimeToLiveString() {
+		return "PT1M";
+	}
+
 }
diff --git a/spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryPropertiesTest.java b/spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryPropertiesTest.java
index c3b47308968..ee44f27b49a 100644
--- a/spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryPropertiesTest.java
+++ b/spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/chat/memory/cassandra/CassandraChatMemoryPropertiesTest.java
@@ -26,6 +26,7 @@
 
 /**
  * @author Mick Semb Wever
+ * @author Jihoon Kim
  * @since 1.0.0
  */
 class CassandraChatMemoryPropertiesTest {
@@ -37,7 +38,7 @@ void defaultValues() {
 		assertThat(props.getTable()).isEqualTo(CassandraChatMemoryConfig.DEFAULT_TABLE_NAME);
 		assertThat(props.getAssistantColumn()).isEqualTo(CassandraChatMemoryConfig.DEFAULT_ASSISTANT_COLUMN_NAME);
 		assertThat(props.getUserColumn()).isEqualTo(CassandraChatMemoryConfig.DEFAULT_USER_COLUMN_NAME);
-		assertThat(props.getTimeToLiveSeconds()).isNull();
+		assertThat(props.getTimeToLive()).isNull();
 		assertThat(props.isInitializeSchema()).isTrue();
 	}
 
@@ -48,14 +49,14 @@ void customValues() {
 		props.setTable("my_table");
 		props.setAssistantColumn("my_assistant_column");
 		props.setUserColumn("my_user_column");
-		props.setTimeToLiveSeconds(Duration.ofDays(1));
+		props.setTimeToLive(Duration.ofDays(1));
 		props.setInitializeSchema(false);
 
 		assertThat(props.getKeyspace()).isEqualTo("my_keyspace");
 		assertThat(props.getTable()).isEqualTo("my_table");
 		assertThat(props.getAssistantColumn()).isEqualTo("my_assistant_column");
 		assertThat(props.getUserColumn()).isEqualTo("my_user_column");
-		assertThat(props.getTimeToLiveSeconds()).isEqualTo(Duration.ofDays(1));
+		assertThat(props.getTimeToLive()).isEqualTo(Duration.ofDays(1));
 		assertThat(props.isInitializeSchema()).isFalse();
 	}