Due to certain bugs like Bug 1782854, favicons.sqlite may have grown well over the expected size. According to telemetry on Nightly 0,5% (beta 0,2%) of users have a db larger than 100MB, so this may not be extremely widespread, but it would still be nice to address somehow. We could for example check if a page has more than N favicons and if so expire any that are older than N days. Note normally we only expire icons if a page is removed from history.
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Due to certain bugs like Bug 1782854, favicons.sqlite may have grown well over the expected size. According to telemetry on Nightly 0.5% (beta 0.2%) of users have a db larger than 100MB, so this may not be extremely widespread, but it would still be nice to address somehow. We could for example check if a page has more than N favicons and if so expire any that are older than N days. Note normally we only expire icons if a page is removed from history.