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HomeHomeWindows LiveWindows LiveWindows Live Me...Windows Live Me...Tuning Add-on Performance: Windows Live Messenger CompanionTuning Add-on Performance: Windows Live Messenger Companion
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11/9/2010 10:46 PM
 
Windows Live Messenger Companion is an add-on for Internet Explorer that ships with Windows Live Essentials beta.  Messenger Companion allows users to discover links that have been shared with them on their various social networks while they browse the internet.  Enabling the key scenarios for Messenger Companion requires the add-on to listen to various browser navigation events and run operations like network calls.  These operations can be expensive and affect the user’s browsing performance.

To present shared links to the user, Messenger Companion listens to the browser’s NavigateComplete2 event.  It then queries its servers for shared links that match the domain the user is currently visiting.  If a match is found, Messenger Companion presents a notification to users telling them about the new shared link.  If users click on the notification, Messenger Companion shows a rich preview of the shared links on the domain.

Some popular domains, like YouTube.com, can have an average of 40 or more shared links at any given time.  Displaying a large number of items can slow down the browser since rendering the list must occur on Internet Explorer’s UI thread.  To address this issue, Messenger Companion only loads and displays two or three shared links at a time.  When users page through the shared links, Messenger Companion updates its UI to show the next set of shared content.  This is an example of how an on-demand architecture can greatly decrease the performance hit that add-ons have on Internet Explorer.
Read on...


Cheers,
Umang Gupta
Inferse.com
 
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HomeHomeWindows LiveWindows LiveWindows Live Me...Windows Live Me...Tuning Add-on Performance: Windows Live Messenger CompanionTuning Add-on Performance: Windows Live Messenger Companion


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