Use Origin private file system

[marcus-pousette]

What is the possibility of using Origin private file system instead of IndexedDB?

https://developer.mozilla.org/en-US/docs/Web/API/File_System_API/Origin_private_file_system

[vweevers]

Should be possible. There's an older issue here about making a wasm build of LevelDB: Level/community#63. It didn't go anywhere because of fs limitations at the time, but OPFS changes that. I think everyone would be happy to get rid of IndexedDB.

[marcus-pousette]

okey!
When I look at it, the challenging things with OPFS is that there are no prefix, query capabilities for finding all files with certain prefix, which seems to be necessary when trying to be compatible with the Level interface.

[vweevers]

Yeah, OPFS alone isn't enough, just provides raw storage. Using any filesystem as a key-value database (where keys are files) isn't gonna be performant. It needs a specialized data structure like LSM trees, which is what LevelDB provides.

[MentalGear]

OPFS would be great for stable reliable in browser usage. As far as I know browser-level uses indexdb which - unless this library has special patches - is unreliable on mobile. Mobile browsers, especially safari, more or less randomly delete indexdb stores (not to speak of the recent Apple WebApp elimination disaster).