Mac 安装 webbench，进行压力测试

brew install ctags # 依赖安装
wget http://blog.zyan.cc/soft/linux/webbench/webbench-1.5.tar.gz
tar -zxvf webbench-1.5.tar.gz
cd webbench-1.5
mkdir -pv /usr/local/man/man1 # 必须
sudo make && sudo make install

# 10 秒内向 http://127.0.0.1:3001/admin 发送 500 次请求
webbench -c 500 -t 10 http://127.0.0.1:3001/admin