Today we released the first Release Candidate for Authoritative Server version 4.5.0. Please try it!
Version 4.5.0 mostly brings small improvements and fixes, but there is one notable new feature: the zone cache.
The zone cache 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.
Since 4.5.0-beta1, the zone cache is enabled by default.
A full list of changes can be found in the changelog.
Please make sure to read the 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.