A presentation which I made for the final internship showcase at Yahoo! India. I presented the outcomes of my project during my work as an intern at Yahoo! small business group during May-July'13.

1. Y! Intern Showcase
Arpit Jain
Yahoo! Small Business Group

3. Project details
Initially working on the PayPal bill me later project for first 2.5 weeks of the
internship.
However, the details of the project got finalized later by Yahoo! and PayPal
authorities.
Later assigned the project on implementing the floating cart interface for
Apple devices and future updated versions of Android.

4. Business Need
Floating cart gives dynamicity to the website.
Floating cart makes the customer make multiple purchases without getting
redirected to checkout page.
Increases customer retention and hence ensures MORE BUSINESS!
Problem : Floating cart does not work in Apple Devices. Also new versions of
Android too won’t support it!!
s
Reason: It makes use of 3rd party proprietary feature : Flash

5. Value proposition
Yahoo! Store has 33,000 merchants as its customers at present.
Considering atleast 100 customers per merchant. Total lives to be impacted:
33000*100=3.3 Million!!!!
Considering the fact that Yahoo! Store has USA as its target region, number
of customers using the platform on mobile devices: 1-2 million.
Direct impace on 2Million people’s online shopping experience!!!!!
More and more $$$ for the company!!!

6. Challenges faced

7. Lots of legacy code!!!

8. Challenges faced
Existing code made use of flash for both Connection Manager and Storage
Modules(YUI2).
Dealt with fc.js file (pretty elaborate code!!,hopefully it was well
documented!)
Understanding the existing XHR requests being made with cross domain
calls.
Understanding YMix! And YFlow! Technology and workflow.
Some part of code involved 13year old code base
(thankfully did not have to interact with it).

9. Solution Overview
Presented the concept using YUI3 Storage engine for retention of
localstorage data. Mostly front-end work.
Presented a “Proof of concept” using a pre-prod store using an external
button. The demo made use of YUI3 IO and Javascript codebase.
Dealt with fc.js file on BDT1 server(rather than on DevBox).
Cross domain calls are generally the lesser touched portion on the web.
However this thing can be easily handled using native transport functionality in
YUI3.

10. Solution Overview
Analyzing the requests made using POST and RESPONSE parameters using
firebug and chrome debugger.
Prepared the code sample to work in correspondence with jscore/fc.js
file(over 7000lines of code).
Understanding the existing XHR requests being made with cross domain
calls.
 Got rid of connection parameters(files) such as io.swf to make cross domain
calls.

11. Sample Screenshots

12. Sample Screenshots

13. There’s life outside project too!!
Attended the Summer School at IISC, Bangalore, on Semantic Web and
Information Retrieval.
Participated and successfully submitted the hack in Yahoo! Hackathon this
quarter. The hack involved generating Flickr! Images corresponding to a news
article. Technology used: PHP, Python, Javascript, JSON, XML.
Attended the session on Mojito held early may.
Got to know industry experience and working in a collaborative environment
in a big group in an international company.

14. Life at Y!