I have been visiting some sites hosted on GAE and I found them to be very slow. Pretty much all of them take longer than usual to load.

Time: (in seconds) [ YSlow ]

9.9 giftag.com
3.1 hotskills.net 
1.9 jeeyo.net
1.5 appspot.com

Is it that App Engine Cloud is too slow, Bigtable is too slow ... or what?

Accepted Answer

You're using the YSlow plugin to measure this, and YSlow tells you why the site is slow (the cunning name is the clue). For example, in the case of gifttag.com, YSlow reports that:

This page has 9 external Javascript scripts. Try combining them into one. This page has 3 external stylesheets. Try combining them into one. This page has 13 external background images. Try combining them with CSS sprites.

So it's get an 'E' grade for that. That's going to kill the perceived load performance of the site.

None of this has anything to do with appengine.

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