Rate Limiting Policy for Azure to limit specific subscriptions not working as intended

Question

I have this in my inbound policy:

<choose>
    <when condition="@(context.Subscription.Name=="someName")" />
    <when condition="@(context.Subscription.Name=="otherName")" />
    <otherwise>
        <rate-limit calls="50" renewal-period="300" remaining-calls-variable-name="remainingCallsPerSubscription" />
    </otherwise>
</choose>

It does not seem to work as intended, throttling also the above named subscriptions, am I missing something?

p.s. I am on the consumption model

Answer 1

I have used the same policy to exempt the subscription keys which are being used from rate-limit policy.

For testing purpose, I have taken 10 calls.

<policies>
    <inbound>
        <base />
        <choose>
            <when condition="@(context.Subscription.Name=="test")" />
            <when condition="@(context.Subscription.Name=="demo")" />
            <otherwise>
                <rate-limit calls="10" renewal-period="300" remaining-calls-variable-name="remainingCallsPerSubscription" />
            </otherwise>
        </choose>
    </inbound>
    <backend>
        <base />
    </backend>
    <outbound>
        <base />
    </outbound>
    <on-error>
        <base />
    </on-error>
</policies>

While testing, you need to pass the subscription key name is Ocp-Apim-Subscription-Key and the value will be the value of your subscription key or else it will fetch the value of context.Subscription.Name as Built-in all-access subscription by default.

When the value of context.Subscription.Name is false, I am getting expected response as shown below.

In order to get the expected response, please make sure you don't have any other policy defined at global or API level.