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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...介绍，按如下设置搞定：
shell> echo 0 > /proc/sys/vm/zone_reclaim_mode
shell> numactl --interleave=all mongod [options]
关于zone_reclaim_mode内核参数的说明，可以参考官方文档。
注：从MongoDB1.9.2开始：MongoDB会在启动时自动设置zone_reclaim_mode。
至...
Compare version numbers without using split function
...tatic void Main()
{
string v1 = "1.23.56.1487";
string v2 = "1.24.55.487";
var version1 = new Version(v1);
var version2 = new Version(v2);
var result = version1.CompareTo(version2);
if (result > 0)
Console.WriteLine("version1 is gr...
How to compare versions in Ruby?
...(available at github):
require 'versionomy'
v1 = Versionomy.parse('0.1')
v2 = Versionomy.parse('0.2.1')
v3 = Versionomy.parse('0.44')
v1 < v2 # => true
v2 < v3 # => true
v1 > v2 # => false
v2 > v3 # => false
...
Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...，效率没得说。
…
最近Tumblr发表了一篇类似的文章：Staircar: Redis-powered notifications，介绍了他们使用Redis实现消息通知系统的一些情况，有兴趣的不妨一起看看。
Redis 消息通知
How to change XAMPP apache server port?
This is my Apache httpd.conf settings :
6 Answers
6
...
图片轮播拓展 - ColinTreeSlideShow - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
图片轮播，一“件”搞定！2017.9.24更新（v2）
融合了新组件AsyncImageLoader，现在直接加载在线图片也不会卡啦GitHub Release
2017.9.17发布第一版本
GitHub Release
基本使用流程为该组件预留一个空的 水平滚动布局，将宽高设置好
（...
Why should I learn Lisp? [closed]
...
One of the main uses for Lisp is in Artificial Intelligence. A friend of mine at college took a graduate AI course and for his main project he wrote a "Lights Out" solver in Lisp. Multiple versions of his program utilized slightly diffe...
AI助手能力再进化：“手术级”修改代码块 - AI 助手 - 清泛IT社区，为创新赋能！
...指定位置：
2、指定改某个代码块：
运行报错与AI联动：
[{"action": "SET_PROPERTY","component": "ChessBoard","property": "Width","value": 465},
{"action": "SET_PROPERTY","...
How to remove Left property when position: absolute?
I'm overriding the site CSS to an RTL version when specific language is chosen.
3 Answers
...
What is the correct way to represent null XML elements?
...r 21 '09 at 19:32
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