> which failed silently, rendering all of the data worthless. I am not in any way related to mongodb, nor do I really like it. That being said, I can't image

> which failed silently, rendering all of the data worthless. I am not in any way related to mongodb, nor do I really like it. That being said, I can't image they failed silently. Much more likely that some return code from an insert was ignored in the application. Otherwise that would be just the mother of all errors of DB development. However, I do recall many questionable things like: - Some sort of fast but in the worst-case inconsistent default config - In order to execute the command to free space (which you had to do regularly) you'd need to have lots of free space Both issues are probably 5 years old, so I also don't remember any details. Migrated to postgres a year later or so.