Implemented in v5.0.
While adding or removing domains from whitelist, blacklist, regex does trigger a "soft" FTL restart (time pihole restartdns reload-lists), resolution should still work.
restartdns reload-lists = only reload database tables (white-/blacklist, gravity, groups, clients), the embedded dnsmasq core doesn't see anything from this sign
Updating the gravity.db also doesn't cause FTL to stop anymore as a second database is build and swapped in total at the end of the run.
pi-hole:release/v5.0 ← pi-hole:tweak/gravity_performance
opened 03:48PM - 24 Jan 20 UTC
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**What does this PR aim to accomplish?:**
Improve gravity performance. There is an extensive discussion about this in on [Discourse](https://discourse.pi-hole.net/t/pihole-g-list-download-disappointing-performance/27266).
**IMPORTANT:** *Please review + merge #3089 first*
**How does this PR accomplish the above?:**
Rewrote most of the gravity code which in concerned with the database. Create a second database during the download process, inject all domains there and swap this new with the old database. This has the additional benefit that there is no time in which the database is unavailable to FTL.
**What documentation changes (if any) are needed to support this PR?:**
Needs to be checked.