WebAPI/Storage2013

What we want (some of which we already have)

Have explicit temporary and permanent storage

• temporary intended to solve caching but cache that can go away without penalty
• no permission dialogues!
• data needs to be deleted if website falls out of use
• we're very close to this, bent about to start reviews

Plug in localStorage to temporary storage

• Honza is working on re-write of localStorage
• lower priority

Moving data from temporary to permanent storage

• also called database migration
• ex. Gmail "go offline"
• ex. Amazon cloud reader

SimpleStorage API

• basically async localStorage
• need very simple API
• high value, low amount of work
• can be built on top of IDB
• Chrome has something already for Chrome extensions
• related things?
  • https://github.com/brianloveswords/filesystem-browserify
  • http://jensarps.github.com/IDBWrapper
  • https://github.com/mozilla-b2g/gaia/blob/master/shared/js/async_storage.js
• something that uses IDB and/or localStorage?
• provide simple API directly in IDB ?
  • http://posts.netroy.in/what-indexeddb-should-look-like

General appcache problems

• spec is terrible (poorly written)
• Mounir will help drive spec side of fixing this
• needs input from Jan, Patrick McManus, etc.
• Jonas and Mounir to come up with very rough proposal
• in London, improve proposal and present to others

Quota API

• similar to what Google has
  • that's connected with FileSystem API which means we'll have to just have something similar but not exactly the same
• more predictable than existing 50 MB limit
• "how much am I currently using?" (both permanent and temporary)

FileSystem API

• like DeviceStorage API?
• sandboxed file system (implemented as a library on top of IDB)
• write a library that uses IDB or falls back to Google's FileSystem API or <something else>
• higher priority than quota API
• do we want to include FileHandle in this API ?
• try to bring in Microsoft views (Apple closer to our view than to Google's)

IndexedDB in Workers

• Maybe need Workers-As-Service (TM-sicking) support in B2G before this is useful?
• Code should start getting into review queues
• IPC thread needs to be removed in future
• schedule needs to be determined at London work week

Priorities

• SimpleStorage API, P1
• FileSystem API, P2
• IndexedDB in workers, P3
• Quota API, P4
• Database migration (aka "temporary storage"), P5