Apigee Edge - 4MV4D - Quota Policy - Flow Variables - S02E10

[anilsr]

Hello Apigeeks,

In this 4MV4D, Find out flow variables set by Quota Policy when API request goes through Quota Policy & How you can use same further down the line in different policies during the API runtime.

For example, If a request comes from partner / developer you might want to let them know how many API requests are consumed within the interval & how many are left. Take a look at 4MV4D below that explains same.

See Quota Policy used in this 4MV4D video below that shows Quota Policy in action,

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Quota async="false" continueOnError="false" enabled="true" name="Quota-1">
    <DisplayName>Quota-1</DisplayName>
    <Properties/>
    <Allow count="4"/>
    <Interval>1</Interval>
    <Distributed>true</Distributed>
    <Synchronous>true</Synchronous>
    <TimeUnit>minute</TimeUnit>
</Quota>

See Assign Message policy used in this 4MV4D video below that shows how we are consuming the flow variables set by Quota Policy.

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AssignMessage name="set-dynamic-content">
    <AssignTo createNew="false" type="response"/>
    <Set>
        <Payload contentType="application/json" variablePrefix="@" variableSuffix="#">
        {"quotaAvailable":"@ratelimit.Quota-1.available.count#", "quotaUsed":"@ratelimit.Quota-1.used.count#"}
    </Payload>
    </Set>
    <IgnoreUnresolvedVariables>false</IgnoreUnresolvedVariables>
</AssignMessage>

As you can see we are sending back the quota available & quota used variables to the client in the response. You can leverage same concept to implement your requirement related to quota management / alter the API flow based on quota.

4MV4D videos are completely focussed on API Developers & Help you learn many interesting concepts very quickly using hands-on approach. Don't forget to subscribe to channel here & share same with your friends / colleagues who are interested in Apigee.

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