Deepthi Sigireddi

oops, didn't realize this is still draft. Reviewers, you may ignore until it is Ready for review.

@shailpujan88 do you intend to complete this PR? It's still in Draft.

Why should this be a built-in vindex type? There is an interface that you can use to implement a custom vindex. It is not clear from the description how this...

In that case, you might want to post this in slack (#developers) to gauge interest from the community. Another option is for you to push your vindex implementation into vitessio/contrib...

The feature request of avoiding promotion seems reasonable. The implementation as outlined will be quite complex and have to touch a lot of places, and it will violate some core...

We do keep track in tablet manager whether we are currently in the process of taking a backup. @GuptaManan100 is going to look at the code and propose how that...

> if we focus on promotion rule only, is it safe to say a REPLICA running any backup-engine could benefit from a prefer_not rule vs the default neutral that semi_sync/cross_cell...

Are you talking about the `/metrics` endpoint? Or something else?

As noted in the slack conversation on this topic, there is currently no endpoint that does this. Whether we should allow one is questionable because stats are intended to be...

@mattrobenolt would you mind creating an umbrella issue like "VTGate performance improvements" or something similar and referring to that in this series of PRs?