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淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...带来了挑战。为此，我们设计了通用的数据中间层——glider——来屏蔽这个影响。glider以HTTP协议对外提供restful方式的接口。数据产品可以通过一个唯一的URL获取到它想要的数据。
以上是淘宝海量数据产品在技术架构方面的一...
`Apache` `localhost/~username/` not working
...rectory "/Users/kevin/Sites/">
Options Indexes MultiViews
AllowOverride None
Require all granted
</Directory>
Make sure to restart the Apache server afterwards with:
sudo apachectl restart
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Heroku error: “Permission denied (public key)”
...add <path-to-your-public-key>.
For example, heroku keys:add ~/.ssh/id_rsa.pub
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How to avoid having class data shared among instances?
... def __init__(self):
self.list = []
Declaring the variables inside the class declaration makes them "class" members and not instance members. Declaring them inside the __init__ method makes sure that a new instance of the members is created alongside every new instance of the object, whi...
Preview layout with merge root tag in Intellij IDEA/Android Studio
...
There is a new parentTag tools attribute (added in Android Studio 2.2) that you can use to specify the layout type for a merge tag, which will make the layout render correctly in the layout editor preview.
So using your example:
<merge xmlns:android="http://schemas.android.c...
How to get first element in a list of tuples?
I have a list like below where the first element is the id and the other is a string:
12 Answers
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Inserting multiple rows in a single SQL query? [duplicate]
...data to insert at once, say 4 rows. My table has three columns: Person , Id and Office .
4 Answers
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MySQL Database won't start in XAMPP Manager-osx
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Didn't work for me: Starting MySQL ..................................................................................................... ERROR! The server quit without updating PID file (/Applications/XAMPP/xamppfiles/var/my...
performing HTTP requests with cURL (using PROXY)
...n I run this command: curl -x, --proxy 122.72.2.200:80 mysite.com/test.php?id=1
– user873286
Feb 27 '12 at 22:52
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Are there any side effects of returning from inside a using() statement?
Returning a method value from inside a using statement that gets a DataContext seems to always work fine , like this:
5 ...