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Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...久化需要。
- buffer：用作缓冲区，平滑后端数据库的写操作，根据数据重要性可能有持久化需求。
- db：替代数据库的用法，有持久化需求。
规避在单实例上放热点 key。
同一系统下的不同子应用或服务使用的 Redis 也要隔离...
select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...般是读就绪或者写就绪），能够通知程序进行相应的读写操作。但select，poll，epoll本质上都是同步I/O，因为他们都需要在读写事件就绪后自己负责进行读写，也就是说这个读写过程是阻塞的，而异步I/O则无需自己负责进行读写，...
How to mount a host directory in a Docker container
I am trying to mount a host directory into a Docker container so that any updates done on the host is reflected into the Docker containers.
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BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...栈上分配空间。.bss 是不占用.exe 文件空间的，其内容由操作系统初始化（清零）；而.data 却需要占用，其内容由程序初始化，因此造成了上述情况。
【例二】
编译如下程序（test.cpp）：
#include <stdio.h>
#define LEN 1002000
int in...
How to easily map c++ enums to strings
...
If you want the enum names themselves as strings, see this post.
Otherwise, a std::map<MyEnum, char const*> will work nicely. (No point in copying your string literals to std::strings in the map)
For extra syntactic sugar, here's how to write a map_init class. The goal is to al...
What is the most efficient way to create HTML elements using jQuery?
...ents were obviously wrong, I've removed them.
– tvanfosson
Sep 8 '10 at 13:23
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重构理论及实践——用工厂模式重构c++后台代码 - C/C++ - 清泛网 - 专注C/C...
...使软件的性能优化更容易。除了对性能有严格要求的实时系统，其他任何情况下”编写快速软件“的秘密就是：首先写出可调的软件，然后调整它以求获得足够速度。
这段摘自书中的言语多少有些暧昧。其实再大胆一些说，...
How to detect page zoom level in all modern browsers?
...en this question was first asked. From reading all the responses and blog posts I could find, here's a summary. I also set up this page to test all these methods of measuring the zoom level.
Edit (2011-12-12): I've added a project that can be cloned: https://github.com/tombigel/detect-zoom
IE8: s...
How do I correctly clean up a Python object?
...esources that need to be cleaned up. The problem with using an explicit close() statement is that you have to worry about people forgetting to call it at all or forgetting to place it in a finally block to prevent a resource leak when an exception occurs.
To use the with statement, create a class ...
How to find serial number of Android device?
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@Hasemam This is not working for me, giving "Force Close" error
– Paresh Mayani
Aug 26 '10 at 11:51
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