| Honestly, I see very few thought-out or backed-up arguments here. The server-level blocking, the unacknowledged writes, silly defaults, etc are not only old news but have been behind mongodb for a while. You also get comments like 'it still has database level locking' but rarely is there an educated discussion about the work that's been done to yield locks as quickly as possible and the real-world impact of this design. People seem intent on punishing the platform for old mistakes (or immaturity) rather than providing a balanced view of it today. And comments like "Absolutely no benefit to Mongo. It's even really slow, so there's really no advantage at all." are just misleading without context, because it's at all true as an outright statement. I spent today at the MongoDB developers conference in Sydney, and heard the CEO speak about when they think mongodb is good vs when you should use RDBMS, heard them speak about their community and target market, and heard a lot of stories and strategies about how to prepare for scale, how to think about schema design, how to monitor and admin the database / clusters, etc. I'll just say that from hearing them in person, and hearing what people say about both the platform and the "marketing guys", you'd never know they were talking about the same company or product. My own company has had a lot of advantage from using MongoDB in recent projects over other technologies (we have a largely MSSQL background). No, we don't do 100GB+ "web scale" (yet). Yes, we build solutions to real world problems and make money. No, it's not a silver bullet. Yes, you should know what you're doing and read the docs. To any hackers / entrepreneurs who are thinking that MongoDB might work for them I'd say do some research, talk to people who've actually used it, and understand the benefits / limitations for yourself. But stay away from opinions not based in real experience (and anything that mentions problems from before version 2.4, it's nearly a year old people) or you might miss out on something good. |
All if this ends at his signature that mentions his scaling SQL book. Not like he has an axe to grind or anything.