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Does Avatar represent the future of movies? Maybe not
$ traffic costs day per day. So 200 Mill on the Bank account ist 5 years of stable traffic (but it increases rapidly) without costs of labor and hardware.
FB has to find a way to earn money without annoying users to much. Thats not easy but i hope they will find a way.
Is $100 per TB the cost to own or rent? ~66 million users generating 100 Mb per day - both figures seem high. According to compete FB has ~90 million monthly uniques so your assumptions imply 2/3 of monthly uniques visit daily which seems unlikely. I'm assuming the majority of the traffic bandwidth is due to loading the default profile pictures and incrementally other photo album pictures (I don't have a sense for how much bandwidth is used by games/apps). FB pictures are JPEG and if you save down a few you'll notice most are under 50KB so let's assume 100KB on average to be safe. 100 Mb in daily traffic per user implies each user is looking at 1,000 pictures a day on average - doesn't jibe with personal experience and I am one of the few that use FB nearly daily
>> "Facebook ... is also planning to have its engineers publish detailed
>> information about how it manages its infrastructure
>> (and saves money as a result, apparently)"
I saw the video below which talks about their Memcache usage.
For backend engineers, the talk is interesting. For others, it's probably really boring.
But it does talk about tweaks that save them millions in infrastructure costs.
http://www.facebook.com/video/video.php?v=63182...
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