Because none of what you said is really all that true. MongoDB has never ignored writes without giving errors. You have always been able to check if the write failed. The issue I think you're referring to is the F_SYNC immediately to disk default. Which was changed many years ago and was never the default for any of the language clients.
MongoDB is a great database in specific situations.
Actually it is feedback I have from the data guys at work, not HN.
And you may be right about that configuration, but I cannot remember the exact details of the discussion.
Either way, don't get me wrong. I use MongoDB as well, and am quite fond of its aggregation framework. It's just not something that I catalog as "reliable and high performance" the way I do redis (which of course, also has limitations of its own).
Because none of what you said is really all that true. MongoDB has never ignored writes without giving errors. You have always been able to check if the write failed. The issue I think you're referring to is the F_SYNC immediately to disk default. Which was changed many years ago and was never the default for any of the language clients.
MongoDB is a great database in specific situations.