Записки программиста, обо всем и ни о чем. Но, наверное, больше профессионального.

2008-12-24

Кэширующий DNS

Всегда полезно иметь на борту толковый DNS-сервер. В простом случае достаточно маленького такого серверочка, который сам ничего не делает а только перенаправляет запросы в большой мир и кэширует ответы.

Вот я себе присмотрел такой:

There are several different packages you can use for caching DNS requests - including bind, djbdns, dnsmasq and pdnsd. The pdnsd package is a very simple and lightweight tool for DNS caching. It will, like many of the other systems, act as a small DNS server forwarding requests to a "real" DNS server and caching the responses.

debian-administration.org

Proxy DNS Server
pdnsd, is an IPv6 capable proxy DNS server with permanent caching (the cache contents are written to hard disk on exit) that is designed to cope with unreachable or down DNS servers (for example in dial-in networking).
pdnsd can be used with applications that do dns lookups, eg on startup, and can't be configured to change that behaviour, to prevent the often minute-long hangs (or even crashes) that result from stalled dns queries.


packages.debian.org

Буду ставить.

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