宕机，Twitter成长的烦恼
2007年是Twitter高速成长的一年，可是随着访问量的增大，数据库的增加，宕机问题也很严重，应该算是Twitter成长路上的烦恼吧。据Pindom的监测数据统计，自2007年2月到12月19日，Twitter总的宕机时间将近6天。见下图。
这里面有两点需要说明一下，一是2月份并不是整月的监测数据；二，3月对Twitter来说简直是个灾难，宕机时间竟累计超过2天！Pindom分析说，这是Twitter参加了当月举行的the SXSW Interactive Festival的缘故，用户数量和访问量暴增。
Twitter growing pains cause lots of downtime in 2007
Pindom has monitored the availability of the Twitter.com website since mid February 2007 until today (and counting). So far, the accumulated downtime of the website totals 5 days and 23 hours. This includes maintenance, but is still a very high number. So far in December, the website has been unavailable for a total of almost 11 hours (part of which was due to problems related to a data center move).
The worst month for Twitter by far was March, when the Twitter.com website totaled over 2 days and 10 hours of downtime. This is also the month when Twitter’s popularity really took off, winning the SXSW Interactive Festiva, so it looks like the rapid growth that month took its toll.
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