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Nginx缓存解决方案:SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
...比较复杂的时候,比如说缓存键的动态计算等,就不得不写一点代码了,此时Lua模块是最佳选择。
闲言碎语不多讲,表一表Nginx配置文件长啥样:
lua_shared_dict phoenix_status 100m;
lua_package_path '/path/to/phoenix/include/?.lua;/path/to/phoen...
What is the difference between sigaction and signal?
...
Excellent sigaction() demo from GCC themselves: gnu.org/software/libc/manual/html_node/…; and excellent signal() demo from GCC themselves: gnu.org/software/libc/manual/html_node/…. Notice that in the signal demo they avoi...
Keep only date part when using pandas.to_datetime
....
pd.to_datetime(df['Date'], utc=False)
You will be able to save it in excel without getting the error "ValueError: Excel does not support datetimes with timezones. Please ensure that datetimes are timezone unaware before writing to Excel."
...
技术人员如何创业《四》- 打造超强执行力团队 - 资讯 - 清泛网 - 专注C/C++...
...术型领导更加容易这样。与其去管理团队还不如多花时间写几个函数来的实际。授权就是教人做事的方法,充分信任他能做好,并且知道和鼓励他不要怕错。授权后并不是不管了,还需要去跟踪进度保证他们执行到位。
建立积...
Using .NET, how can you find the mime type of a file based on the file signature not the extension
...},
{"xhtml", "application/xhtml+xml"},
{"xls", "application/vnd.ms-excel"},
{"xml", "application/xml"},
{"xpm", "image/x-xpixmap"},
{"xsl", "application/xml"},
{"xlsx","application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
{"xltx","a...
C#操作XML小结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...23" value="321"/>
</aaa>
如果我要找到123然后取到321应该怎么写呢?
using System.XML;
XmlDataDocument xmlDoc = new System.Xml.XmlDataDocument();
xmlDoc.Load(@"c:/Config.xml");
XmlElement elem = xmlDoc.GetElementById("add");
string str = elem.Attributes["value"].Value
第三...
从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...就清楚地知道了Mahout推荐引擎的原理和使用,我们就可以写一个自己的构造器,通过“策略模式”实现,算法的组合。
新建文件:org.conan.mymahout.recommendation.job.RecommendFactory.java
public final class RecommendFactory {
...
}
1). 构造数据...
C++并发编程(中文版) - 文档下载 - 清泛网 - 专注C/C++及内核技术
... 137
6.3 设计更为复杂的基于锁的数据结构… 148
6.3.1 编写一个使用锁的线程安全查找表… 148
6.3.2 编写一个使用锁的线程安全链表… 153
6.4 小结… 157
第7章 设计无锁的并发数据结构… 159
7.1 定义和结果… 159
7.1.1 无阻塞数据...
C++ Lock-free Hazard Pointer(冒险指针) - C/C++ - 清泛网 - 专注C/C++及内核技术
.../ 可拓展 / 阻塞场景可用
性能依赖 TLS
性能敏感 / 读多写少
C++ 标准库中提供了锁和引用计数方案。锁的缺点很明显,无论是哪种锁,在读的时候都会产生较大的开销。引用计数则相对好一些,但每次读取都需要修改引...
How to show multiline text in a table cell
...rap our content works fine, but due to the use of this table (exporting to excel), large #s of columns and rows balloon the size of the exported file and cause excel to crash upon reading the file. (odd, I know). Has anyone else seen this or have an idea for a solution?
– JoeBr...