Improve polling example [deploy-site]

site/static/md/examples/polling.md

@@ -21,4 +21,14 @@
 </div>
 ```
 
-You can use the [`data-on-interval`](/reference/attribute_plugins#data-on) attribute to execute an expression at a regular interval. In this example, we are incrementing the `count` signal every 1 second.
+You can use the [`data-on-interval`](/reference/attribute_plugins#data-on) attribute to execute an expression at a regular interval. In this example, we are incrementing the `count` signal every 1 second.
+
+An alternative approach is use the [`data-on-load`](/reference/attribute_plugins#data-on) attribute with the `__delay` modifier to control the polling frequency from the backend. Using this method, you can control back-pressure.
+
+```html
+<div data-on-load__delay.1s="@get('/endpoint')">
+    Count: 0
+</div>
+```
+
+The backend endpoint can merge the same fragment but with a different delay value to determine the polling frequency.