thank you Mark, that makes sense. I have some plan in the future to cleanup orphans [when an origin's frecency must be recalculated](https://mozilla-hub.atlassian.net/browse/SNT-713). Plus there's Bug 1475582 to do cleanups when a bookmark is removed, rather than leaving that to timed expiration. Having a more precise eviction, rather than just "timed expiration" should help here. In the meanwhile I still think it's worth adding a maintenance task to cleanup weekly.
Bug 1650511 Comment 35 Edit History
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thank you Mark, that makes sense. I have some plan in the future to cleanup orphans [when an origin's frecency must be recalculated](https://mozilla-hub.atlassian.net/browse/SNT-713). Plus there's Bug 1475582 to do cleanups when a bookmark is removed, rather than leaving that to timed expiration. Having a more precise eviction, rather than just "timed expiration", should help here. In the meanwhile I still think it's worth adding a maintenance task to cleanup weekly.