Facebook doesn’t always go down.But when it does, it takes down the rest of the Internet.
CSS May Be YourNew Worst EnemyBrowsers block rendering until all CSS isdownloaded.Browsers will download all CSS beforerendering, even if it is unused.Does your mobile phone really need todownload the print stylesheet?
Death by DatabaseN+1 queries will bring your database to itsknees.Slow queries will kick it while it is down.Disk thrashing will finish it off and pick it’spockets for good measure.
In the Cloud ResourcesAre Limitless, Right?Resources in the cloud are abundant butinconsistent.Failing resources create a domino effect offurther failures.Scaling has more to do with people more thanany other resource.
There and Back Again,A Network TaleNetwork round-trips can add up quickly, evenwithin the same datacenter.Browsers will limit simultaneous downloadsfrom the same host.Service Oriented Architectures are pushingmore data through the network.
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Sources and credit:Some content for this presentation was graciously provided by:http://www.readwriteweb.com/enterprise/2012/05/the-fastest-online-payment-processor-its-google.phphttp://blog.newrelic.com/2011/12/22/are-external-services-slowing-you-down-new-relic-infographic-reveals-the-fastest-and-most-popular-external-apis/http://www.webperformancetoday.com/2012/05/29/browser-innovation-14-web-performance-rules-faster-loading-websites/http://blogs.keynote.com/the_watch/2012/06/facebook-failed-did-you-.htmlhttp://www.phpied.com/css-and-the-critical-path/http://dtrace.org/blogs/brendan/2012/02/29/the-use-method/http://highscalability.com/blog/2012/5/16/big-list-of-20-common-bottlenecks.htmlhttps://gist.github.com/2841832