Firefox/Features/Panorama Groups On Demand

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Load Panorama groups on-demand
Stage Shipped
Status Complete
Release target Firefox 6
Health OK
Status note `


Product manager Asa Dotzler
Directly Responsible Individual Alex Limi
Lead engineer Tim Taubert
Security lead `
Privacy lead `
Localization lead `
Accessibility lead `
QA lead George Carstoiu
UX lead Alex Limi
Product marketing lead `
Operations lead `
Additional members `

Open issues/risks


Stage 1: Definition

1. Feature overview

When starting Firefox, Panorama groups that haven't been activated yet should be loaded on-demand, similar to how the “load 0 tabs concurrently” functionality of session restore works (aka. “BarTab”)

This feature falls primarily in the Experience category (from the "Discover, Experience, and Connect" vision statement.)

We're doing this because:

  • Deferring the loading of inactive Panorama groups will result in much faster and more responsive start-up for Panorama users.
  • Reduce startup time and memory usage.

2. Users & use cases


3. Dependencies


4. Requirements

Starting Firefox with multiple Panorama groups should not result in all of them being loaded on startup.



Stage 2: Design

5. Functional specification


6. User experience design

Interaction is described in bug 595601.

Stage 3: Planning

7. Implementation plan


8. Reviews

Security review


Privacy review


Localization review




Quality Assurance review


Operations review


Stage 4: Development

9. Implementation

Stage 5: Release

10. Landing criteria


Feature details

Priority P1
Rank 999
Theme / Goal `
Roadmap User Experience
Secondary roadmap `
Feature list Desktop
Project `
Engineering team Desktop front-end

Team status notes

  status notes
Products ` `
Engineering ` `
Security pass `
Privacy ` `
Localization ` `
Accessibility ` `
Quality assurance Ready to land in Fx6 main bug verified
User experience ` `
Product marketing ` `
Operations ` `