Output Modifiers for Query API

[Gayathri Venkatesh]

Hi everyone,

My name is Gayathri, and I am a CNCF CommunityBridge student working on adding post-processors to Query APIs. In order to add this feature on Query APIs, we would like to better understand the different kinds of output modifiers you would potentially like to have in the future, along with their use cases.

The idea of an output modifier is to modify the output of the query API after evaluation on the server side (e.g Prometheus). This helps in improving the user experience immediately on API level.

Some examples of output modifiers are:
* Sorting and limiting the query results (by selecting the top k results).
* The ASAP smoother, which can be used to smooth out spikes in a data series.

We would similarly love to understand any other modifiers that might be useful to you to better adjust decisions we make now. Do you have any output modifier/post-processor that would be useful to compute on query output? 

Kind Regards,
Gayathri V.

[Bartłomiej Płotka]

Please share your ideas for example post-processors you would love to see! (: 

Also shared on Twitter: https://twitter.com/bwplotka/status/1324760431177682947

Kind Regards,

Bartek Płotka (@bwplotka)

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