> I, well, one my companies, have been using mongo for a while without any problems. I cannot comment about is reliability but as a business tool, in the niche

> I, well, one my companies, have been using mongo for a while without any problems. I cannot comment about is reliability but as a business tool, in the niche area we operate, it served us well. The issues I listed provably exist. That you haven't run into them yet doesn't change that - and quite likely, you might not even know whether you've run into it. Losing data or having your database open to the wide internet, for example, are two scenarios that you will likely not be aware of unless you explicitly test for them. > I've got nothing against relation databases but there are not a solution to every single problem. And if you'd read my post carefully, you would've seen that I make no such claim. They do solve many problems, however. > Heck, why not decide first if you can use flat files? Flat files are rarely the correct solution. Race conditions ahoy! > Do you really need to query and join. Not all problems require that sort of thing. Many do. And even if they don't, MongoDB is still not the right choice.