CloudServices/Sync/FxSync/ClientPriorities

[STALE] Client Priorities

This is supserseded by the FxSync Roadmap.

Feature Reqs from Product

• [P1] Improve discoverability
  • basically http://areweprettyyet.com/4/syncPromotion/
• [P1] Instant Sync (engine specific sync heuristics)
  • "Instant" may be misleading, but essentially this is much more aggressive syncing of certain data types (i.e. bookmarks, passwords) and smarter sync-on-return-from-idle behaviour.
• [P1] Deauthorize device from syncing (e.g. lost phone) from Account Portal
  • Needs a spec, hard to revoke access to just a device, since it has all creds.
  • May morph to "remote wipe" trigger that isn't tied to user/pass auth (token-based auth + polling/push?)
• [P1] Improve Sync setup process
  • Waiting on user study, as yet unscoped
• [P2] Push to mobile
  • UX TBD, but fairly simple to implement (new data type, likely)
    • new data type? I'm not so sure... Would rather use push notifications --philikon
• [P2] Sync add-ons
  • Add/update/remove automatically across computers
  • Does this apply to cross-app syncing, or is this like prefs?
    • Should be like prefs (only sync add-ons between Firefoxes, Fennecs, Thunderbirds, etc.) --philikon
• [P2] Sync favicons
  • This is less painful than we think, should be able to sync the moz_favicons table in some reasonable way.
• [P2] Sync web apps
  • Waiting on web app evolution
• [P2] Sync localStorage
  • Need to figure out space reqs, this will likely push us into "omg" levels of quota for some users
  • Also highly non-trivial to do conflict resolution. localStorage is essentially a flat object, afaik no timestamps. Easy to get web app's data into inconsistent state --philikon
• [P2] Snippet view in about:home
  • Need more details here.

Platform-level improvements

• [P1] War On Sync
  • Don't spin the event loop bug 600059
    • Introduce async APIs across SyncEngine, Store, Tracker
    • also see /Services/Sync/WEP/116
  • Avoid synchronous I/O *everywhere*. Needs async bulk APIs in platform:
    • forms
    • passwords
    • bookmarks

• [P2] TPS, formerly known as Crossweave 2.0
  • lives in services/sync/tests/...
  • maintained by us, run by tinderboxes
  • mochitests? mozmill?
  • JSON test file format (avoid custom format + parser), possibly even JS
  • moar end-to-end tests
    • tests the hell out of bookmark dupe detection
    • test all obscure bookmark types (queries, etc.)
    • need to test errors and edge cases as well
    • run on fennec

• [P2] Get rid of 3.5/3.6 compat code
  • use Services, XPCOMUtils where possible
  • use NetUtil.BadCertHandler?
  • implement + use toolkit generic async resource bug 581560

• [P3] Automatic Profiling
  • are we JITing everywhere?
  • main thread blocking (UI responsiveness)
  • memory leaks