diff --git a/spring-cloud-gateway-server/src/main/java/org/springframework/cloud/gateway/filter/factory/CacheRequestBodyGatewayFilterFactory.java b/spring-cloud-gateway-server/src/main/java/org/springframework/cloud/gateway/filter/factory/CacheRequestBodyGatewayFilterFactory.java
index 7e85f145..625f6ff9 100644
--- a/spring-cloud-gateway-server/src/main/java/org/springframework/cloud/gateway/filter/factory/CacheRequestBodyGatewayFilterFactory.java
+++ b/spring-cloud-gateway-server/src/main/java/org/springframework/cloud/gateway/filter/factory/CacheRequestBodyGatewayFilterFactory.java
@@ -89,8 +89,8 @@ public class CacheRequestBodyGatewayFilterFactory
 							//
 							Object backupCachedBody = exchange.getAttributes()
 									.get(CACHED_ORIGINAL_REQUEST_BODY_BACKUP_ATTR);
-							if (backupCachedBody instanceof DataBuffer) {
-								DataBufferUtils.release((DataBuffer) backupCachedBody);
+							if (backupCachedBody instanceof DataBuffer dataBuffer) {
+								DataBufferUtils.release(dataBuffer);
 							}
 						});
 					}));
diff --git a/spring-cloud-gateway-server/src/test/java/org/springframework/cloud/gateway/filter/factory/CacheRequestBodyGatewayFilterFactoryTests.java b/spring-cloud-gateway-server/src/test/java/org/springframework/cloud/gateway/filter/factory/CacheRequestBodyGatewayFilterFactoryTests.java
index 009172db..bcabf1c2 100644
--- a/spring-cloud-gateway-server/src/test/java/org/springframework/cloud/gateway/filter/factory/CacheRequestBodyGatewayFilterFactoryTests.java
+++ b/spring-cloud-gateway-server/src/test/java/org/springframework/cloud/gateway/filter/factory/CacheRequestBodyGatewayFilterFactoryTests.java
@@ -175,8 +175,7 @@ public class CacheRequestBodyGatewayFilterFactoryTests extends BaseWebClientTest
 			return chain.filter(exchange).doAfterTerminate(() -> {
 				Object o = exchange.getAttributes()
 						.get(CacheRequestBodyGatewayFilterFactory.CACHED_ORIGINAL_REQUEST_BODY_BACKUP_ATTR);
-				if (o instanceof PooledDataBuffer) {
-					PooledDataBuffer dataBuffer = (PooledDataBuffer) o;
+				if (o instanceof PooledDataBuffer dataBuffer) {
 					if (dataBuffer.isAllocated()) {
 						exchange.getResponse().setStatusCode(HttpStatus.INTERNAL_SERVER_ERROR);
 						fail("DataBuffer is not released");