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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...。
迁移工作需要导入旧数据。MongoDB本身有一个mongoimport工具可供使用，不过它只接受json、csv等格式的源文件，不适合我的需求，所以我没用，而是用PHP写了一个脚本，平稳运行了一段时间后，我发现数据导入的速度下降了，同...
How do I get the user agent with Flask?
... 'xforwardedfor': str,
'authorization': bool
'ip_info': str or None,
'path': str,
'speed': float,
'date': datetime,
},
{
....
}
]
Here is one of the places in the library where the data is collected:
https://gith...
PDB文件：每个开发人员都必须知道的 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的。对于public builds，在运行source indexing tool后，版本控制工具将代码存储到你设置的代码cache中。对于private builds，只是存储了PDB文件的全路径，例如在c:\foo下的源文件mycode.cpp，在pdb文件中存储的路径为c:\foo\mycode.cpp。对于private ...
How to install Android SDK Build Tools on the command line?
...a stands for --all and -t stands for --filter.
If you need to install multiple packages do:
android update sdk -u -a -t 1,2,3,4,..,n
Where 1,2,..,n is the package number listed with the list command above
share
...
Setting a timeout for socket operations
... like:
Socket socket = new Socket();
socket.connect(new InetSocketAddress(ipAddress, port), 1000);
Quoting from the documentation
connect
public void connect(SocketAddress endpoint, int timeout) throws IOException
Connects this socket to the server with a specified timeout value. A t...
Determine a user's timezone
...r time zone, not your time zone's offset from GMT. To fix this, simply multiply by -1.
Also note that w3school says:
The returned value is not a constant, because of the practice of using
Daylight Saving Time.
share...
What is the difference between “expose” and “publish” in Docker?
...orts without exposing them. I tried that. The catch here is that container IP address is unpredictable. I believe that link is used to specify which container you want to connect (so you link to specific container IP), not to enable connection.
– Jiri
Mar 4 '14...
App Inventor 2 中文网原创内容 · App Inventor 2 中文网
...调试方式：App调试、问题排查
【项目合并】AI2项目合并工具
【存储】Android存储系统基础知识：内部存储，外部存储，App特定目录ASD 及 getASD代码实现
【视频】App Inventor 2基础组件使用
【科普】App Inventor 2 中的“2”是什么...
C语言之父辞世引发“分号”悼念 - 创意 - 清泛网 - 专注C/C++及内核技术
...ultics项目调整过程中，就迫切需要一门高级计算机语言做工具，为了解决程序的可移植性问题，肯·汤普逊和丹尼斯·里奇决定对它进行简单改进，形成 NB语言。但NB在Unix的移植方面依然不尽人意，此后里奇又对NB语言做了改进，...
Where is Erlang used and why? [closed]
...It has to route many messages simultaneously, and handle many a lot of TCP/IP connections.
So we have 2 features:
handle many connections
route messages given some aspects of the message
These are examples where erlang shines.
handle many connections
It is very easy to build scalable non-bloc...