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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...对多核的支持不是太好，可以对多实例进行CPU绑定。
b、操作系统级别，
内核以及socket的优化，网络优化bond、文件系统、IO调度
innodb主要用在OLTP类应用，一般都是IO密集型的应用，在提高IO能力的基础上，充分利用cache机制。...
XDocument or XmlDocument
...id="4" />
<bar id="5" />
</foo>
<foo id="123">Text 1<moo />Text 2
</foo>
</xml>
We can evaluate:
var node = xele.XPathSelectElement("/xml/foo[@id='123']");
var nodes = xele.XPathSelectElements(
"//moo/ancestor::xml/descendant::baz[@id='1'...
How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
...Doe',
address: {
city: 'NY',
street: 'Eighth Avenu',
number: 123
}
};
var instructions = dot.flatten(person)
console.log(instructions);
/*
{
$set: {
'firstName': 'John',
'lastName': 'Doe',
'address.city': 'NY',
'address.street': 'Eighth Avenu',
'address.numb...
Use URI builder in Android or create URL with variables
...would it be a path? Or would it be a query?
– hichris123
Oct 3 '13 at 20:10
If it is a path, then it would be appendPa...
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
...列顺序执行，这样能减少同一台机器对数据库同一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...
了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
...系统查询和操作。由于这个原因，程序员不得不使用本机操作系统提供的应用程序编程接口（Application Program Interfaces，API），而这使得代码不能在平台之间移植。以下面的简单情况为例：您需要确定某个文件是否是 Directory 类型...
HTML encoding issues - “” character showing up instead of “ ”
... answered Jun 5 '14 at 13:50
al123al123
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...
An operation on a socket could not be performed because the system lac...
An operation on a socket could not be performed because the system lacked sufficient buffer space(由于系统缓冲区空间不足，或者因为队列已满，不能执行套接字上的操作)An-operation-on-a-socket-could-not-be-performed-because-the-system-lacked-sufficient-buffer-space服务...
An operation on a socket could not be performed because the system lac...
An operation on a socket could not be performed because the system lacked sufficient buffer space(由于系统缓冲区空间不足，或者因为队列已满，不能执行套接字上的操作)An-operation-on-a-socket-could-not-be-performed-because-the-system-lacked-sufficient-buffer-space服务...
An operation on a socket could not be performed because the system lac...
An operation on a socket could not be performed because the system lacked sufficient buffer space(由于系统缓冲区空间不足，或者因为队列已满，不能执行套接字上的操作)An-operation-on-a-socket-could-not-be-performed-because-the-system-lacked-sufficient-buffer-space服务...