Prefix tree used in urlblacklistfilter is being deleted and reloaded everytime new blacklist file is available, this is ineffective. We should adapt the urlblacklistfilter to work with diffs (adding, removing elements from prefix tree). This also affects the blacklist downloader which has to create diff files.
Prefix tree used in urlblacklistfilter is being deleted and reloaded everytime new blacklist file is available, this is ineffective. We should adapt the urlblacklistfilter to work with diffs (adding, removing elements from prefix tree). This also affects the blacklist downloader which has to create diff files.