v96.4.0 (_2023-01-30_)

v96.4.0 (2023-01-30)

Full Changelog

Tabs

What's Changed

The Tabs engine is now more efficient in how it fetches its records:

• The Tabs engine no longer clears the DB on every sync.
• Tabs now tracks the last time it synced and only fetches tabs that have changed since the last sync.
• Tabs will keep records for up to 180 days, in parity with the clients engine. To prevent the DB from getting too large.

Nimbus ⛅️🔬🔭

🦊 What's Changed 🦊

- Added `GleanMetrics.NimbusHealth` metrics for measuring duration of `apply_pending_experiments` and `fetch_experiments`. ([#5344](https://github.com/mozilla/application-services/pull/5344))