How to use Apply rate limit assertion set option in VSM

[Shanmuga Priya G]

Hi,

We have requirement that stub should accept only limited transactions per second. If TPS exceeds the configured value it should throw an error.

From the below link, we found that it is possible to achieve the above requirement, but we couldn't find Apply rate limit assertion in VSM. If anyone tried this please let us know if we need to add any jar or someone please illustrate with screenshots.

https://docops.ca.com/ca-api-gateway/9-3/en/policy-assertions/assertion-palette/service-availability-assertions/apply-rate-limit-assertion/

Thanks,
Priya.

[Sankar Natarajan]

HI Priya
           Just wanted to double check, the doc shared was from Broacaom API Gateway product. Are you using the API gateway along with Devtest ?

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Sankar Natarajan
Service Virtualization Product Engineering Team
Broadcom
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[Shanmuga Priya G]

Hi Sankar,
We are not using API gateway along with Devtest. Our requirement is to limit TPS. We just found the above document which seems to be similar to our requirement. -Please let us know the steps if we can achieve this without using API gateway.

Thanks,
Priya

[Arif Sogut]

Hi Priya,

I had a similar requirement for a customer but couldn't find anything other than the 'Think-Time' and 'Think Scale' setting.
But this should normally do the trick. Here's a DocOps link for more details on Think-Time and alternative units you can use:
https://docops.ca.com/devtest-solutions/10-5/en/using/using-service-virtualization/using-devtest-portal-with-service-virtualization/edit-virtual-services/update-a-virtual-service-manually/update-responses

Other than that, if your customer is using VSE for Performance, you could then additionally tweak the 'Concurrent Capacity' setting. More details here: https://docops.ca.com/devtest-solutions/10-5/en/using/using-service-virtualization/using-devtest-portal-with-service-virtualization/deploy-virtual-services

Regards,
/arif