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通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...案最好能够尽可能透明，不能对原有架构造成冲击，最终我选择了通过FastCGI Cache实现服务降级的方案。
关于FastCGI Cache，以前很多朋友已经做过分享，比如：超群、莿鸟栖草堂，概念性的东西我就不再赘述了，说点与众不同的...
iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...语言、不同IDE、不同平台的调试，有同性也有个性。今天我们就来学习一下iOS开发中的调试技巧，语言暂用为OC，IDE当然是强大的Xcode。首先说明下，Xcode已经为我们调试项目提供了极大的方便。
【1.普通断点】
断点(Breakpoint)绝...
source of historical stock data [closed]
...ship you a drive with terabytes of data. If I remember right its about $3k-4K per year of data. But trust me, once you understand how hard it is to get good intraday data, you won't think this is very much money at all.
Not to discourage you but to get good data is hard, so hard in fact that many h...
How do malloc() and free() work?
... virtual memory manager can handle (most often multiples of 512 bytes e.g. 4KB).
So returning 40 Bytes to the OS will just not work. So what does free do?
Free will put the memory block in its own free block list. Normally it also tries to meld together adjacent blocks in the address space. The fr...
Why is the .bss segment required?
...ny uninitialized buffers 4096 bytes in length. Would you want all of those 4k buffers to contribute to the size of the binary? That would be a lot of wasted space.
– Jeff Mercado
Mar 2 '12 at 15:02
...
What is the difference between localStorage, sessionStorage, session and cookies?
...domain. This gives you considerably more space to work with than a typical 4KB cookie.
The data is not sent back to the server for every HTTP request (HTML, images, JavaScript, CSS, etc) - reducing the amount of traffic between client and server.
The data stored in localStorage persists until explic...
初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...件前些年，HandlerSocket的横空出世让人们眼前一亮，当时我还写了一篇文章介绍了其用法梗概，时至今日，由于种种原因，HandlerSocket并没有真...前些年，HandlerSocket的横空出世让人们眼前一亮，当时我还写了一篇文章介绍了其用法...
Visual SVN 安装及客户端使用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...是通过图像界面来配置。
2.为什么不用TFS?
回答:
因为我们一开始就是用Subversion和TortioseSVN,所以就没有更换其他的软件。至于TFS至今没有用过，其实，我只是看了一些的文章而已，对它也不了解。
3.VisualSVN Server是免费的吗？
...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...对于算法大神们来说是这样的：而对于刚接触这个领域的我来...最近因为PAC平台自动化的需求，开始探坑推荐系统。这个乍一听去乐趣无穷的课题，对于算法大神们来说是这样的：
而对于刚接触这个领域的我来说，是这样的...
Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V
...the number of printed As:
If N > 10, the number of As will be: 4^{N+1-4K}·3^{5K-N-1}
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