18 ms·

Mongo does have document-level atomic update operators, such as $inc: http://docs.mongodb.org/manual/reference/operator/update/inc/#up._S_inc http://docs.mongod

• thom_nic 12y ago
  Yes this was completely ignored by the article. This along with a 'where' clause can guarantee the operation will only succeed iff there is sufficient funds. I don't know if other NoSQL DBs offer these sort of atomic operators. Which makes this statement seem particularly unfair: "The problem here stemmed from the broken-by-design interface and semantics offered by MongoDB." He seems to call out Mongo by name a couple times but doesn't say that the exchange was actually using Mongo.