Mirrors 常用的国内镜像源

## 阿里开源镜像站
这里有很多镜像可供选择
https://developer.aliyun.com/mirror/

## Maven
创建 ~/.m2/settings.xml 文件， 内容为
```
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                      http://maven.apache.org/xsd/settings-1.0.0.xsd">
  <localRepository/>
  <interactiveMode/>
  <usePluginRegistry/>
  <offline/>
  <pluginGroups/>
  <servers/>
  <mirrors>
    <mirror>
     <id>aliyunmaven</id>
     <mirrorOf>central</mirrorOf>
     <name>阿里云公共仓库</name>
     <url>https://maven.aliyun.com/repository/central</url>
    </mirror>
    <mirror>
      <id>repo1</id>
      <mirrorOf>central</mirrorOf>
      <name>central repo</name>
      <url>http://repo1.maven.org/maven2/</url>
    </mirror>
    <mirror>
     <id>aliyunmaven</id>
     <mirrorOf>apache snapshots</mirrorOf>
     <name>阿里云阿帕奇仓库</name>
     <url>https://maven.aliyun.com/repository/apache-snapshots</url>
    </mirror>
  </mirrors>
  <proxies/>
  <activeProfiles/>
  <profiles>
    <profile>
        <repositories>
           <repository>
                <id>aliyunmaven</id>
                <name>aliyunmaven</name>
                <url>https://maven.aliyun.com/repository/public</url>
                <layout>default</layout>
                <releases>
                        <enabled>true</enabled>
                </releases>
                <snapshots>
                        <enabled>true</enabled>
                </snapshots>
            </repository>
            <repository>
                <id>MavenCentral</id>
                <url>http://repo1.maven.org/maven2/</url>
            </repository>
            <repository>
                <id>aliyunmavenApache</id>
                <url>https://maven.aliyun.com/repository/apache-snapshots</url>
            </repository>
        </repositories>
     </profile>
  </profiles>
</settings>
```

## Python 的 easy_install 和 pip
Python 安装 package 时使用的 easy_install 和 pip 源

安装时使用豆瓣源
```bash
pip  install  -i  https://pypi.doubanio.com/simple/  --trusted-host pypi.doubanio.com  requests
```

Mac/Linux 下 替换默认的源, 修改 $HOME/.pip/pip.conf 文件内容
```bash
# 使用豆瓣源
[global]
timeout = 60
index-url = https://pypi.doubanio.com/simple
trusted-host = pypi.doubanio.com
```

备用地址
- 清华大学源 https://pypi.tuna.tsinghua.edu.cn/simple
- 豆瓣源 https://pypi.doubanio.com/simple
- pypi官方源 https://pypi.org/simple/

## PHP 的 Composer
PHP Composer 安装 package 时使用的 composer 源

全局配置
```bash
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
```

单独一个项目使用
```bash
composer config repo.packagist composer https://mirrors.aliyun.com/composer/
```

取消使用
```bash
composer config -g --unset repos.packagist
```

## Node.js 的 NPM

修改源地址为淘宝 NPM 镜像
```bash
npm config set registry http://registry.npm.taobao.org/
```

取消修改 (修改源地址为官方源)
```bash
npm config set registry https://registry.npmjs.org/
```