Indeed uses an LSM tree based key value store for its data about job postings: https://engineering.indeedblog.com/blog/2013/10/serving-over-1-billion-documents-

Indeed uses an LSM tree based key value store for its data about job postings: https://engineering.indeedblog.com/blog/2013/10/serving-over-1-billion-documents-per-day-with-docstore-v2/ https://engineering.indeedblog.com/blog/2013/10/serving-over...