I 've been using Couchdb for a while, and now started experimenting with Mongodb. The latter seems more suitable for me as it seems I can atomically perform sev

I 've been using Couchdb for a while, and now started experimenting with Mongodb. The latter seems more suitable for me as it seems I can atomically perform several operations at once. Couchdb on the other hand provides bulk updates, but the all_or_nothing option never fails so atomicity is not literally forced.