Second Release Candidate for PowerDNS AUthoritative Server 4.5.0

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Hello!

Today we released the second, and hopefully last, Release Candidate for Aut=
horitative Server version 4.5.0. Please try it!

Version 4.5.0 mostly brings small improvements and fixes, but there are two=
 notable new features:

* The =E2=80=98zone cache=E2=80=99, which allows PowerDNS to keep a list of=
 zones in memory, updated periodically. With this cache, PowerDNS can avoid=
 hitting the database with queries for unknown domains. In some setups, and=
 some attack scenarios, this can make a serious performance difference. Man=
y thanks to Chris Hofstaedtler for implementing this.

* Priority ordering in the AXFR queue in PowerDNS running as a secondary. S=
ome users with a lot of domains (>100k) sometimes found real changes waitin=
g behind signature refreshes on Thursdays. With the new ordering, those rea=
l changes can =E2=80=98skip the line=E2=80=99 and get deployed on your seco=
ndaries faster. Many thanks to Robin Geuze for implementing this.

Since 4.5.0-beta1, the zone cache is enabled by default.

A full list of changes can be found in the [1]changelog.

Please make sure to read the [2]Upgrade Notes before upgrading.

With version 4.5.0, support for platforms with a time_t type smaller
than 64 bits is dropped. This means that we do not build packages for
Raspberry Pi OS.

The [3]tarball ([4]signature) is available at
[5]downloads.powerdns.com. Packages for various distributions are
available from [6]repo.powerdns.com.

Please send us all feedback and issues you might have via the
[7]mailing list, or in case of a bug, via [8]GitHub.

  1. https://doc.powerdns.com/authoritative/changelog/4.5.html#change-4.5.0=
-rc2
  2. https://doc.powerdns.com/authoritative/upgrading.html
  3. https://downloads.powerdns.com/releases/pdns-4.5.0-rc2.tar.bz2
  4. https://downloads.powerdns.com/releases/pdns-4.5.0-rc2.tar.bz2.sig
  5. https://downloads.powerdns.com/releases/
  6. https://repo.powerdns.com/
  7. https://mailman.powerdns.com/mailman/listinfo/pdns-users
  8. https://github.com/PowerDNS/pdns/issues/new/choose

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