Mixi is a massive social networking site in Japan, nice user
interface demo.
Began in late 2003 with 10,000 users and 600K pageviews a day. As
it became clear that the site was viral, the question became how
to scale out before getting overwhelmed.
In the first year they went from 600 users to 210,000 users.
2,000,000 users in the second year.
Now 3.7 million users, with 15,000 new users per day. Japan has
86.7 million users.
Site has 70% active users (logging in at least every 72 hours).
Average user spends 3 hours 20 minutes on mixi a week. 35th on
Alexa worldwide, 3rd in Japan.
Mixi now gets more traffic than Amazon Japan.
Mixi uses LAMP (perl), memcache, squid. Fedora for Linux.
Requests go mod_proxy to mod_perl, then either memcache or a set
of MySQL servers divided by blogs, messages and other.
Using more than 100 servers, 10 new servers per month. All done …
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