Google announces their DNS initiative: Google Public DNS.

I always thought it was kinda inconvenient that there’s a “DNS propagation” downtime. Looks like one of the things Google is doing is making DNS propagation fast and asynchronous to requests.

Google Public DNS independently resolves domain names and keeps the resolutions in the cache until their time-to-live (TTL) expires, at which point they are automatically refreshed. The cycle of caching and refreshing is performed offline, asynchronously with user requests, so that responses are almost always available directly from cache.

When starting up a behavior like supervisor, the start_link func looks something like:

start_link() ->
  supervisor:start_link({local, ?MODULE}, ?MODULE, []).

Which in turn calls the initialization callback:

init(_Args) ->
  %% do some stuff.

Notice that the initialization callback takes 1 argument event though the params list (the third parameter) is empty in your start_link func.

So, naturally (am I alone in this?) I assumed that when defining a Child Spec for a Supervisor, the {M, F, A} definition would follow the same pattern:

Childspec = {child1,
            {child1, start, []},
            permanent, brutal_kill, worker, dynamic},
%% ...

But the above definition does not call child1:start/1, where the one parameter is the emtpy list. Instead, the list items are extracted as individual parameters. So {child1, start, [p1, p2, p3]} would call child1:start/3, and {child1, start, []} calls child1:start/0. Just something to look out for if you’re new to erlang and the supervisor behavior like me.

• “When a man runs from fatherhood, he’s not really running from responsibility, he’s running from the guilt of a mediocre life”http://bit.ly/ #
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• The twitter plugin for adium makes twitter feel like a giant global IRC channel. this is a good thing #
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• This Sammy project is piquing my interest – lightweight, stateful ajax, plus more. http://bit.ly/5BXFk @sammy_js #
• trying out the official twitter support in Adium 1.4b #
• giving @sammy_js a run, going to see if it works well in my workflow #
• two thumbs up for Twitter in Adium 1.4b — anything that unifies apps wins in my book #
• just told our Roomba to dock and sleep and it beeped a definitive “no” … it’s the beginning of the end for humankind #
• keep fighting the good fight phonegap devs http://bit.ly/qDl9G #
• @rossbates hah, awesome – yeah I swear I’m going to come home one day and see a “KILL ALL HUMANS” pattern in the floor in reply to rossbates #

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• @damanlovett also, ActiveRecords are self contained. i.e. you create an Author and that Author can save and update itself in reply to damanlovett #
• @damanlovett ActiveRecord can be used as a standalone lib, whereas CakePHP models are tightly integrated with CakePHP, plus syntactic diffs in reply to damanlovett #
• @rossbates The app got presented at Microsoft’s Tech.Ed conference and was well received but we have been told not open floodgates yet in reply to rossbates #
• I think #cakephp models are great, but I have to admit I’m excited about ActiveRecord for PHP http://bit.ly/C4hjA #
• just made the switch from Monaco to Inconsolata after reading this article http://bit.ly/vv5HO #
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