Merge branch '3.0.x'

docs/src/main/asciidoc/spring-cloud-gateway.adoc

@@ -1501,6 +1501,39 @@ Instead, it should throw an `Exception` or signal an error (for example, through
 
 WARNING: When using the retry filter with any HTTP method with a body, the body will be cached and the gateway will become memory constrained. The body is cached in a request attribute defined by `ServerWebExchangeUtils.CACHED_REQUEST_BODY_ATTR`. The type of the object is a `org.springframework.core.io.buffer.DataBuffer`.
 
+A simplified "shortcut" notation can be added with a single `status` and `method`.
+
+The following two examples are equivalent:
+
+.application.yml
+====
+[source,yaml]
+----
+spring:
+  cloud:
+    gateway:
+      routes:
+      - id: retry_route
+        uri: https://example.org
+        filters:
+        - name: Retry
+          args:
+            retries: 3
+            statuses: INTERNAL_SERVER_ERROR
+            methods: GET
+            backoff:
+              firstBackoff: 10ms
+              maxBackoff: 50ms
+              factor: 2
+              basedOnPreviousValue: false
+
+      - id: retryshortcut_route
+        uri: https://example.org
+        filters:
+        - Retry=3,INTERNAL_SERVER_ERROR,GET,10ms,50ms,2,false
+----
+====
+
 === The `RequestSize` `GatewayFilter` Factory
 
 When the request size is greater than the permissible limit, the `RequestSize` `GatewayFilter` factory can restrict a request from reaching the downstream service.