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...存cache中放好可秒杀的数量，还可以把数据分布开来放，100商品，10台服务器一台放10个，无需在当时操作任何数据库。可以订单数够后，停止秒杀，然后批量写数据库。而且秒杀的商品不多。火车票这个不是像秒杀那么简单的，...
Convert Python dict into a dataframe
...(d, name='DateValue')
Out[21]:
2012-06-08 388
2012-06-09 388
2012-06-10 388
In [22]: s.index.name = 'Date'
In [23]: s.reset_index()
Out[23]:
Date DateValue
0 2012-06-08 388
1 2012-06-09 388
2 2012-06-10 388
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How to replace all occurrences of a character in string?
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answered May 24 '10 at 11:33
Kirill V. LyadvinskyKirill V. Lyadvinsky
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gdb fails with “Unable to find Mach task port for process-id” error
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Those instructions did not work for me on OSX 10.9.2 with MacPorts, but this did: sourceware.org/gdb/wiki/BuildingOnDarwin
– simpleuser
Apr 7 '14 at 20:37
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How to count string occurrence in string?
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1084
The g in the regular expression (short for global) says to search the whole string rather tha...
How to set entire application in portrait mode only?
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answered Jul 19 '11 at 10:38
Vincent Mimoun-PratVincent Mimoun-Prat
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Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh
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answered Jul 2 '10 at 20:18
matt bmatt b
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Where are my postgres *.conf files?
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answered Aug 30 '10 at 18:31
Frank HeikensFrank Heikens
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If Python is interpreted, what are .pyc files?
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answered Jun 8 '10 at 14:28
unwindunwind
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Difference between “include” and “require” in php
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answered Sep 3 '10 at 7:53
StevenSteven
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