Does ArangoDB use the same storage strategy MongoDB does? From the FAQ:

"So how much RAM do you need? This depends on the size and structure of your data: Your application will access one or many collections (think of collections as denormalized tables for the time being). Once you open a collection the indexes for this collection are created in the RAM and the data is loaded into the RAM using memory-mapped files. If your collections are bigger than your RAM, the operation system will be forced to swap data in and out of the swap space."

I'm not an expert, but a lot of people seem to harp on MongoDB for this very reason. Does ArangoDB use the same strategy? If not, how is it similar/different?