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淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...行记录操作的并发度，同时也能控制单个商品占用数据库连接的数量，防止热点商品占用太多数据库连接。
数据库层做排队。应用层只能做到单机排队，但应用机器数本身很多，这种排队方式控制并发仍然有限，所以如果能...
Ubuntu says “bash: ./program Permission denied” [closed]
...m_name. Then execute it.
If that does not work, copy the program from the USB device to a native volume on the system. Then chmod u+x program_name on the local copy and execute that.
Unix and Unix-like systems generally will not execute a program unless it is marked with permission to execute. The...
How do I download a package from apt-get without installing it? [closed]
... a computer without a NIC , and I want to install some programs in it via USB memory, but how can I download a program from apt-get without installing it?
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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...》提到了几个问题还没有解决。主节点挂了能否自动切换连接？目前需要手工切换。 在上一篇文章《搭建高可用MongoDB集群（一）——配置MongoDB》 提到了几个问题还没有解决。
主节点挂了能否自动切换连接？目前需要手工...
Logcat not displaying my log calls
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I needed to restart the adb service with the command adb usb
Prior to this I was getting all logging and able to debug, but wasn't getting my own log lines (yes, I was getting system logging associated with my application).
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How can I toggle word wrap in Visual Studio?
...is is really useful for those with small screens. I have a small Lilliput USB monitor that is good for small tool windows, Skype IM, etc. It works great for putting the output window on, except that it sucks having to always sideways scroll. After just putting up with sideways scroll for months I...
How to connect to my http://localhost web server from Android Emulator
... 10.0.2.2 is working on emulator but not working when i connect mobile for usb debugging. ?
– Jawad Zeb
Jun 23 '15 at 12:55
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由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，只要带宽、I/O够强，服务器计算能力够，并支持的并发连接数顶得住10万TCP链接的建立 的话，那没有问题。但在数据一致性面前，这10万就完完全全成了一个可望不可及的理论值了。
我说那么多，我只是想从业务上告诉大家...
Is there an equivalent of lsusb for OS X
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I got tired of forgetting the system_profiler SPUSBDataType syntax, so I made an lsusb alternative. You can find it here , or install it with homebrew:
brew install lsusb
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Error inflating when extending a class
...e devices. When the application is run via AndroidStudio -> RunApp on a USB connected device the app works.
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