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If a link to "Write Concern" prominently visible at the start of the first page of the official documentation for the Ruby API does not seem important enough to look at, I don't know what to tell you, except RTFM.


'Success' and 'Failure' are fuzzy concepts when writing to distributed databases, and you need to tell Mongo which particular definition fits your needs. The 'unsafe' default in mongo is controversial, but ranting about what a "proper database" is without even reading the docs is stupid. Instead, let's rant about what a "proper developer" should do when using a new system...

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