Migrates 3.11 note regarding routes to 4.x

Steven Smith · Steven Smith · commit 97b4a73d3647 · 2023-09-05T14:19:14.000-04:00
diff --git a/modules/deployments-ab-testing-lb.adoc b/modules/deployments-ab-testing-lb.adoc
@@ -54,6 +54,11 @@ Browse to the application at `ab-example-a.<project>.<router_domain>` to verify
 
 . When you deploy the route, the router balances the traffic according to the `weights` specified for the services. At this point, there is a single service with default `weight=1` so all requests go to it. Adding the other service as an `alternateBackends` and adjusting the `weights` brings the A/B setup to life. This can be done by the `oc set route-backends` command or by editing the route.
 +
+[NOTE]
+====
+When using `alternateBackends`, also use the `roundrobin` load-balancing strategy to ensure requests are distributed as expected to the services based on weight. `roundrobin` can be set for a route by using a link:https://docs.openshift.com/container-platform/4.13/networking/routes/route-configuration.html#nw-route-specific-annotations_route-configuration[route annotation].
+====
++
 Setting the `oc set route-backend` to `0` means the service does not participate in load-balancing, but continues to serve existing persistent connections.
 +
 [NOTE]

Original file line number	Diff line number	Diff line change
@@ -54,6 +54,11 @@ Browse to the application at `ab-example-a.<project>.<router_domain>` to verify
`54`	`54`
`55`	`55`	. When you deploy the route, the router balances the traffic according to the `weights` specified for the services. At this point, there is a single service with default `weight=1` so all requests go to it. Adding the other service as an `alternateBackends` and adjusting the `weights` brings the A/B setup to life. This can be done by the `oc set route-backends` command or by editing the route.
`56`	`56`	`+`
	`57`	`+[NOTE]`
	`58`	`+====`
	`59`	+When using `alternateBackends`, also use the `roundrobin` load-balancing strategy to ensure requests are distributed as expected to the services based on weight. `roundrobin` can be set for a route by using a link:https://docs.openshift.com/container-platform/4.13/networking/routes/route-configuration.html#nw-route-specific-annotations_route-configuration[route annotation].
	`60`	`+====`
	`61`	`++`
`57`	`62`	Setting the `oc set route-backend` to `0` means the service does not participate in load-balancing, but continues to serve existing persistent connections.
`58`	`63`	`+`
`59`	`64`	`[NOTE]`