[knot-dns-users] Knot DNS 2.4.0 released

Dear Knot DNS users, CZ.NIC is proud to release the 2.4.0 release of Knot DNS. This release contains many improvements over 2.3.x release of Knot DNS. The Knot DNS 2.4.x is the new stable branch. Starting from this release we are going to support current stable (2.4.x) and previous stable (2.3.x) branches, and at the same time we are deprecating previous Knot DNS 1.6.x release. Now the new features we are so excited about! * We have a new journal to store zone changes, it's key features are: - all journals for all zones are in a single LMDB database (defaults to storage/journal; 1G size) - the occupied space is measured per zone - old changesets get preserved after zone flush until we run out of space - if zone flushing is disabled and journal gets full, it tries to free up space by merging older changesets - all changes are done by transactions, resulting in always-consistent DB (but some mutexes still necessary for opening DB && for keeping zone contents consistent with journal) - kjournalprint provides a way to list zones in journal - old journal is automatically imported, but the configuration needs to be updated manually * Thanks to qp-trie (originally proposed by Tony Finch) adapted to Knot DNS we have much lower memory consumption when Knot DNS is used with many zones * The zone timers and zone events have been refactored and improved * The SOA query and transfer now shares the TCP connection * There's a new statistics module for traffic measurements There are also several other bugfixes and improvements related to transfers, timers and other areas. And that's it! Thank you for using Knot DNS. And we are really looking forward to your feedback. Full changelog: https://gitlab.labs.nic.cz/labs/knot/raw/v2.4.0/NEWS Sources: https://secure.nic.cz/files/knot-dns/knot-2.4.0.tar.xz GPG signature: https://secure.nic.cz/files/knot-dns/knot-2.4.0.tar.xz.asc Documentation: https://www.knot-dns.cz/docs/2.x/html/ -- Ondřej Surý -- Technical Fellow -------------------------------------------- CZ.NIC, z.s.p.o. -- Laboratoře CZ.NIC Milesovska 5, 130 00 Praha 3, Czech Republic mailto:ondrej.sury@nic.cz https://nic.cz/ --------------------------------------------