Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From: Chris Angelico <rosuav@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: asyncio - run coroutine in the background
Date: Sat, 20 Feb 2016 20:02:18 +1100
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On Sat, Feb 20, 2016 at 7:59 PM, Marko Rauhamaa <marko@pacujo.net> wrote:
> Chris Angelico <rosuav@gmail.com>:
>
>> In a (non-Python) program of mine, I got annoyed by synchronous name
>> lookups, so I hacked around it: instead of using the regular library
>> functions, I just do a DNS lookup directly (which can then be
>> event-based - send a UDP packet, get notified when a UDP packet
>> arrives). Downside: Ignores /etc/nsswitch.conf and /etc/hosts, and
>> goes straight to the name server. Upside: Is able to do its own
>> caching, since the DNS library gives me the TTLs, but
>> gethostbyname/getaddrinfo won't.
>
> Ditto in a Python program of mine, although I don't bother with caching:
> the DNS server is perfectly capable of caching the entries for me.

If you know you have a local DNS server, sure. Mine is written for a
generic situation where that can't be depended on, so it caches
itself. But it's no big deal.

ChrisA