PDNS is an advanced high performance authoritative nameserver with a host of backends. Besides plain BIND configuration files, PDNS reads information from MySQL, Oracle, PostgreSQL and many other databases. Backends can easily be written in any language, and a sample Perl backend is provided. PDNS powers http://express.powerdns.com, a Web-based DNS maintenance site, and the top level domain .TK. License: GNU General Public License (GPL) Changes:
Compared to 2.9.21, this version offers a massive performance boost for installations running with high cache-TTLs or a large packet cache, in many cases of an order of magnitude. Additionally, a large number of bugs were addressed, some features were added, and overall many areas saw improvements.