Ok, TaffyDB is a piece of crap. You call `.fetch` to fetch a document at some id, but if you modify your fetched copy, the copy in the database is also modified. With a database like this I'm much better with a hashmap.
From my perspective, with a small collection size, I'll sacrifice performance for expressiveness. I have a number of expensive features that I think do nice things.
> Performs better than similar products (NeDB, TaffyDB, PouchDB etc.) and it's much smaller
It would be interesting to see benchmarks.
[1] http://www.slideshare.net/techfort/lokijs/4