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MongoDB does not currently have single-server durability, so a crash can cause loss of data. As you point out, replication is the recommended path to durability. We'll also probably be adding support for single-server durability by 1.8.

That said, the article seems to imply "missing documents" with no crash. That is something I've never seen reported before this post.

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Awesome, thanks.

I'm actually in the opposite boat that the author is; I'm trying to find a good excuse to start using Mongo. I need to get better at modeling data without schemas... I don't feel comfortable using it until I get better at the design aspect.

Have you checked out this page: http://www.mongodb.org/display/DOCS/Schema+Design

I think there are also some videos linked from there that should help.

I have not, thanks! I've asked about this topic a few times, and never got a good response. It's not like I was trying hard, though.

Bookmarked. I can't wait to dig into this. Thanks again.

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