• 案例源码仓库地址： https://github.com/Rodert/go-demo
• 官方文档： https://etcd.io/
• 视频教程： https://space.bilibili.com/404747369

介绍

谈使用场景之前，看看他有哪些功能

官方定义是这样的：
etcd is a strongly consistent, distributed key-value store that provides a reliable way to store data that needs to be accessed by a distributed system or cluster of machines. It gracefully handles leader elections during network partitions and can tolerate machine failure, even in the leader node.

使用场景

• 服务发现

• 配置中心

• 分布式锁

安装&搭建

搭建 ETCD

环境： mac

# 安装
brew install etcd# 启动
brew services start etcd# 检查状态
brew services list | grep etcd# 停止
brew services stop etcd# 卸载
brew uninstall etcd

与 ETCD 交互

# 检查工具是否安装
etcdctl version# 写入
etcdctl put mykey "myvalue"# 获取
etcdctl get mykey# 删除
etcdctl del mykey

集群

# 查看集群状态
etcdctl cluster-health

Go+ETCD 编码

安装依赖

go get go.etcd.io/etcd/client/v3

编码

https://github.com/Rodert/go-demo

执行

go run main.go

执行结果：