Is there a proposal for it already? Would love to see how that performance works on the relay side, I guess it would be an inverse proportion with the IDs array size
Discussion
Not yet. But I hope to at least motivate somebody with more skills in the trade to propose a filter. I have not coded a tree myself and other people are saying a bloom filter is more efficient for this need. No idea which is better.
A bit filter would be much better. The only issue is there are false positives. So occasionally you would send a filter to a relay and it would think you already have some event that you dont. You can tune the false positive rate though.