Does MongoDB journaling guarantee durability?

Question

Even if journaling is on, is there still a chance to lose writes in MongoDB?

\"By default, the greatest extent of lost writes, i.e., those not made to the journal,

Answer 1

I would have to agree with Sammaye that journoualing has little to do with durability. However, if you want to get an answer to whether you can really trust mongodb to store your data with good consistency, then I would suggest that you read this blog post. There is a reply from 10gen regarding that post, and a reply from the author to the 10gen post. I would suggest that you read into it to make an educated decision. It took me some time to understand all the details on my own, but this post has the basics covered.

The response to the blog post was given here by 10gen, the company that makes mongodb.

And the response to the response was given by the professor on this post.

It explains a lot about how Mongodb can shard data, how it actually functions, and the performance hits it takes if you add on extra safety locks. I strongly want to say that these three writings are the best thing out there, and by far the most comprehensive things out there that talk about the benefits and drawbacks of mongodb, if you think its one sided, look at the comments, and also see what people had to say, because if something received a reply from the company that made the software, then it must have made some good points atleast.