Baidu is one: https://www.mongodb.com/blog/post/mongodb-at-baidu-powering-100-apps-across-600-nodes-at-pb-scale https://www.mongodb.com/blog/post/mongodb-at-bai

Baidu is one: https://www.mongodb.com/blog/post/mongodb-at-baidu-powering-100-apps-across-600-nodes-at-pb-scale https://www.mongodb.com/blog/post/mongodb-at-baidu-powering-... 160 shards = 160 replica sets, and is already larger than Parse.