Comment by cookguyruffles

Nothing to add to the conversation, just wanted to say I absolutely adore this. Years ago I used to think it'd be nice if search engines simply exposed all their shards to clients and let clients do all the results merging and suchlike. Of course that's probably a terrible idea in practice for performance, but this library is definitely implementing the spirit in a very practical way!

It also reminded me of a vague inverse of this hack. In old versions of Qemu (possibly it is still implemented, but I have vague memories it got ripped out), you could point Qemu at a directory on disk and it'd produce an emulated floopy disk drive with a virtual FAT12 image containing the directory contents. AFAIK it didn't keep the actual data in memory, I guess all it needed was file sizes to know how to build a virtual memory mapping that contained the filesystem metadata + proxied reads from the underlying files for data sectors. I look forward to seeing your implementation of this concept in a virtualized SQLite file <-> GraphQL proxy ;)

edit: insane, it still exists and apparently supports write mode?! https://en.wikibooks.org/wiki/QEMU/Devices/Storage#Virtual_F...