A Tech intro to YDN
Christian Heilmann, Grenoble, December 2008
http://scriptingenabled.org | http://wait-till-i.com | http://twitter.com/codepo8

The Yahoo Developer
Network is the central source
of everything Yahoo does to
make developers happy!

http://developer.yahoo.com/

I am now going to talk about
just a few things we offer
there.

We have Web Services and
APIS for almost all our offers.

They all work pretty similar:

First, get an AppID!

https://developer.yahoo.com/wsregapp/

Construct a REST call:
http://answers.yahooapis.com/
AnswersService/

Construct a REST call:
http://answers.yahooapis.com/
AnswersService/V1/

Construct a REST call:
http://answers.yahooapis.com/
AnswersService/V1/questionSearch?

Construct a REST call:
http://answers.yahooapis.com/
AnswersService/V1/questionSearch?
query=asterix

Construct a REST call:
http://answers.yahooapis.com/
AnswersService/V1/questionSearch?
query=asterix&region=fr&lang=fr

Construct a REST call:
http://answers.yahooapis.com/
AnswersService/V1/questionSearch?
query=asterix&region=fr&lang=fr&a
ppid={yourappid}

Output formats:
XML, RSS, JSON, PHP

What if you need to mix and
match and filter data?

https://pipes.yahoo.com/

https://pipes.yahoo.com/

http://developer.yahoo.com/yql/console/

Getting the data is one step.

Displaying it in a manner
useful for end users another.

This is why we share what
worked for us with you.

http://developer.yahoo.com/ypatterns

And we have a framework of
HTML/CSS that works for us
and can be used by you.

Front Page Yahoo! Search Flickr
My Yahoo Yahoo Search for Upcoming
iPhone/Mobile
Yahoo Sports Yahoo/Eurosport Delicious
Yahoo News Yahoo Maps Yahoo Live
Yahoo Finance Yahoo Local Yahoo Pipes
Yahoo Mail SDS Shine
Metro (Next Home Yahoo Bugzilla Yahoo Buzz
Page)
YAP Yahoo Answers HotJobs

http://developer.yahoo.com/yui/
http://yuiblog.com

http://developer.yahoo.com/yui/grids/builder/

http://ui.jquery.com/
(function() {
var myConfig = {
height: '300px',
width: '600px',
dompath: true,
focusAtStart: true
};
var myEditor = new YAHOO.widget.SimpleEditor('editor', myConfig);
myEditor.render();
})();
http://ui.jquery.com

Cool, but isn’t using other
people’s stuff a lot of extra
code and slows you down?

Exceptional Performance Tips:
http://developer.yahoo.com/performance/

http://developer.yahoo.com/yslow/

What if someone asks you to
build a specialist search?

You could buy databases and
build an interface and get
servers to host and index the
search...

Or you could use BOSS.

http://developer.yahoo.com/search/boss/

http://icant.co.uk/sandbox/unsafe.html

http://veosearch.com

Say you want to help your
clients find good keywords to
promote their product online.

You can do some research,
surf all the competitors’ sites
and note down the
descriptions, keywords and
titles.

Or you can keep your eyes
open and check if there is an
API for that.

http://boss.yahooapis.com/ysearch/web/v1/donkeys?
format=xml&appid=...

http://boss.yahooapis.com/ysearch/web/v1/donkeys?
format=xml&view=keyterms&appid=...

All you need to do is getting
the top 20, analyzing the
keyword frequency and
create a top 20.

http://developer.yahoo.net/blog/archives/2008/11/
boss_keywords.html

Then you take YUI CSS grids,
and spend 30 minutes playing
with colours and fonts.

And you have a
product:
http://keywordfinder.org

Flickr is another classic case
of improving a product.

Cliquez ici, SVP!
http://www.flickr.com/photos/tags/grenoble/

http://api.flickr.com/services/feeds/
photos_public.gne?tags=grenoble&lang=fr-
fr&format=atom

http://api.flickr.com/services/feeds/
photos_public.gne?tags=grenoble&lang=fr-
fr&format=json

http://api.flickr.com/services/feeds/
photos_public.gne?tags=grenoble&lang=fr-
fr&format=json&jsoncallback=voila

THANKS!
Christian Heilmann
http://scriptingenabled.org | http://wait-till-i.com
twitter/flickr: codepo8