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We've learned mobile is different. In If You're Programming A Cell Phone Like A Server You're Doing It Wrong we learned programming for a mobile platform is its own specialty. In How Facebook Makes Mobile Work At Scale For All Phones, On All Screens,
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Update: Instagram Improved Their App's Performance. Here's How. When you find your mobile application that ran fine in the US is slow in other countries, how do you fix it? That’s a problem Facebook talks about in a couple of enlightening videos from the @scale
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Power on a cell phone is like water in a desert. It’s the very stuff of life. If you take the same naive programming techniques you learned when programming on a server in a datacenter your cell phone will die of thirst. This is dramatically shown by Reto Meier,
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Update: More background by Ikai Lan, who worked on the mobile server team at LinkedIn, says some facts were left out: the app made "a cross data center request, guys. Running on single-threaded Rails servers (every request blocked the entire process), running Mongrel, leaking memory like a sieve."