替换镜像
清华大学开源软件镜像站
中国科学技术大学开源软件镜像
阿里云官方镜像站
brew 下载位置：/Users/user_name/Library/Caches/Homebrew or downloads，再次执行 brew install mysql,会出现 Already downloaded...
1. Homebrew/Linuxbrew 镜像使用帮助
1.1 替换现有上游
# brew 程序本身，Homebrew/Linuxbrew 相同
git -C "$(brew --repo)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git
# 以下针对 mac OS 系统上的 Homebrew
git -C "$(brew --repo homebrew/core)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git
git -C "$(brew --repo homebrew/cask)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask.git
git -C "$(brew --repo homebrew/cask-fonts)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask-fonts.git
git -C "$(brew --repo homebrew/cask-drivers)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask-drivers.git
# 以下针对 Linux 系统上的 Linuxbrew
git -C "$(brew --repo homebrew/core)" remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/linuxbrew-core.git
# 更换后测试工作是否正常
brew update
1.2 复原
# brew 程序本身，Homebrew/Linuxbrew 相同
git -C "$(brew --repo)" remote set-url origin https://github.com/Homebrew/brew.git
# 以下针对 mac OS 系统上的 Homebrew
git -C "$(brew --repo homebrew/core)" remote set-url origin https://github.com/Homebrew/homebrew-core.git
git -C "$(brew --repo homebrew/cask)" remote set-url origin https://github.com/Homebrew/homebrew-cask.git
git -C "$(brew --repo homebrew/cask-fonts)" remote set-url origin https://github.com/Homebrew/homebrew-cask-fonts.git
git -C "$(brew --repo homebrew/cask-drivers)" remote set-url origin https://github.com/Homebrew/homebrew-cask-drivers.git
# 以下针对 Linux 系统上的 Linuxbrew
git -C "$(brew --repo homebrew/core)" remote set-url origin https://github.com/Homebrew/linuxbrew-core.git
# 更换后测试工作是否正常
brew update
2. Homebrew-bottles 镜像使用帮助
**注:该镜像是 Homebrew 二进制预编译包的镜像。本镜像站同时提供 Homebrew 的 formula 索引的镜像（即 brew update 时所更新内容）
临时替换:
export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles
长期替换:
echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles' >> ~/.bash_profile
source ~/.bash_profile
参考资料
解决 Homebrew 下载更新极慢的问题
Mac——brew替换源地址&安装配置mysql@5.7版本
mac 上用homebrew安装完mysql后，怎样使用密码连接数据库
