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搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...高可用的mongodb集群：
首先确定各个组件的数量，mongos 3个， config server 3个，数据分3片 shard server 3个，每个shard 有一个副本一个仲裁也就是 3 * 2 = 6 个，总共需要部署15个实例。这些实例可以部署在独立机器也可以部署在一台机...
How to delete every other line in Vim?
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ruirui
9,73377 gold badges4242 silver badges6161 bronze badges
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How to create directories recursively in ruby?
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edited May 3 '17 at 19:45
answered Sep 10 '10 at 15:49
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Change font size of UISegmentedControl
...font: font],
for: .normal)
Swift 3:
let font = UIFont.systemFont(ofSize: 16)
segmentedControl.setTitleTextAttributes([NSFontAttributeName: font],
for: .normal)
Swift 2.2:
let font = UIFont.systemFontOfSize(16)
segm...
swift case falling through
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370
Yes. You can do so as follows:
var testVal = "hello"
var result = 0
switch testVal {
case "o...
Android gradle: buildtoolsVersion vs compileSdkVersion
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answered Jul 2 '14 at 4:53
Xavier DucrohetXavier Ducrohet
26.9k55 gold badges8181 silver badges6262 bronze badges
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
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243
Curly braces. Passing keyword arguments into dict(), though it works beautifully in a lot of sce...
How do I specify a single test in a file with nosetests?
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answered Aug 20 '13 at 10:19
michaeljosephmichaeljoseph
6,28844 gold badges2222 silver badges2525 bronze badges
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Run an app on a multiple devices automatically in Android Studio
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305
This is almost too easy, actually. When you see the list of devices come up after launching th...