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用UML画的四种集群模型
1:高可用性集群 强调的是高可用性。2:负载均衡集群 不强调高可用性,强调负载的均衡3:高吞吐集群 注重吞吐量,又叫做SIMD(single instruction multiple data),每个worker的功能相同,数据不同。4:分布式计算 又叫做MIMD(multiple inst...
分类:其他好文   时间:2014-08-23 19:02:41    阅读次数:251
Ubuntu重置root 密码
开机的时候按Esc调出GRUB菜单。进入高级模式。   选中恢复模式(recover mode)后按‘e’键。   把ro recovery nomodeset 改成rw single init=/bin/bash      然后按ctrl+x 进入单用户模式。 然后重置root密码,命令为 passwd root。 重启,就ok啦。...
分类:其他好文   时间:2014-08-23 14:02:20    阅读次数:261
LeetCode: Single Number
LeetCode: Single NumberGiven an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a...
分类:其他好文   时间:2014-08-23 12:38:10    阅读次数:212
[转]MySQL-Galera Cluster With HAproxy
When I started working on Open Stack, I had to investigate about the HA of the nova component. Unfortunatly the nova configuration needed a single ent...
分类:数据库   时间:2014-08-22 21:04:19    阅读次数:527
【leetcode】Single Number II
int singleNumber(int A[], int n) { int once = 0; int twice = 0; int three = 0; for (int i = 0; i < n; ++i) { //在计算新的once 前,计算twice twice |...
分类:其他好文   时间:2014-08-22 16:00:48    阅读次数:146
Grouping by Multiple Columns to Single Column as A String
SELECT t.PROB_ID, STUFF((SELECT ',' + s.NOTESFROM gpcomp1.GPPROBNOTES sWHERE s.PROB_ID = t.PROB_IDFOR XML PATH('')),1,1,'') AS NOTESFROM gpcomp1.GPPRO...
分类:其他好文   时间:2014-08-21 21:00:04    阅读次数:174
[翻译] DoImagePickerController
DoImagePickerControllerAn image picker controller with single selection and multiple selection. Support to select lots photos with panning gesture.这是一...
分类:其他好文   时间:2014-08-21 20:51:44    阅读次数:232
Problem with WinRM on Exchange 2013 Management Shell and Exchange Toolbox on a new exchange 2013 with CAFE and BE on single server installation
While deploying MS Exchange 2013 I experienced issues with accessing the Exchange Management Shell and Exchange Toolbox. Whenever I tried to open the ...
分类:Windows程序   时间:2014-08-20 12:28:32    阅读次数:387
Cracking the Coding Interview 6.2
There is an 8*8 chess board in which two diagnolly opposite corners have been cut off. You are given 31 dominos, and a single domino can cover exactly...
分类:其他好文   时间:2014-08-20 12:01:32    阅读次数:236
【AngularJS】AngularJS 教程
AngularJS通过新的属性和表达式扩展了HTML。------------->扩展HTML属性AngularJS可以构建一个单页面应用程序(SPAs: Single Page Applications)。AngularJS表达式AngularJS 使用 表达式 把数据绑定到HTML。Angula...
分类:Web程序   时间:2014-08-19 23:47:25    阅读次数:179
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