avinal commented on a change in pull request #6464:
URL: https://github.com/apache/apisix/pull/6464#discussion_r815866245
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File path: docs/en/latest/architecture-design/upstream.md
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@@ -21,19 +21,21 @@ title: Upstream
#
-->
-Upstream is a virtual host abstraction that performs load balancing on a given
set of service nodes according to configuration rules. Upstream address
information can be directly configured to `Route` (or `Service`). When Upstream
has duplicates, you need to use "reference" to avoid duplication.
+Upstream is a virtual host abstraction that performs load balancing on a given
set of service nodes according to the configured rules.
+
+Although Upstream can directly configured to the [Route](./route.md) or
[Service](./route.md), using an Upstream object is recommended when there is
duplication as shown below.
Review comment:
```suggestion
Although Upstream can be directly configured to the [Route](./route.md) or
[Service](./route.md), using an Upstream object is recommended when there is
duplication as shown below.
```
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