findOne vs findById

[Benjamin Bengfort]

Perhaps I'm just bad at Googling, but I was wondering about the relative performance of findOne vs findById - or if there was no difference at all.

I'm routinely confronted with the following choice (as I'm sure many of us are):

findOne({_id: "myid"})

findById("myid")

As well as the related find*AndUpdate or find*AndRemove. 

Should I be using one over the other, or is it just syntactic sugar/convenience method? 

Best,

Ben

[Jason Crawford]

I'm pretty sure it's just a convenience method, since MongoDB itself doesn't have separate queries for these things. To be totally sure, you could turn on logging in Mongoose to see exactly the queries it's doing—you'll probably find that it does the same query in both cases.

Hope that helps,

Jason

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Blog: http://blog.jasoncrawford.org  |  Twitter: @jasoncrawford

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[Ryan Wheale]

I can verify that findById( [id] ) is just a shortcut to findOne( {_id: [id]} );  The only performance hit is an extra function call.

~Ryan