Hi, I had put together the following document describing an approach I had prototyped (pull request #9116) on pubsub indexing service:
https://docs.google.com/document/d/1lDt15Eo4dudH2y2TmPcSd5E7VQP-Boc_UEZnXPRIrQE Any guidance and/or contributions on the doc/code are very much appreciated. Thank you Aditya
