TiDB has a similar case study: Queries over 1.3 Trillion Rows of Data Within Milliseconds of Response Time at Zhihu.com https://pingcap.com/success-stories/lesson-learned-from-quer...

The latest stats in the same case scenario (already-read posts) Zhihu is:

- 2.6 Trillion Rows

- 560TB data

- 200 TiKV instances