sync.Map 是并发安全的字典，于 2017 年 4 月 27 日合并到 Go 代码仓库的主分支：
Map is a concurrent map with amortized-constant-time loads, stores, and deletes.
It is safe for multiple goroutines to call a Map’s methods concurrently.
以下是对 sync.Map 的 Load/Store/Delete 等常用操作的图解:
sync.Map 是并发安全的字典，于 2017 年 4 月 27 日合并到 Go 代码仓库的主分支：
Map is a concurrent map with amortized-constant-time loads, stores, and deletes.
It is safe for multiple goroutines to call a Map’s methods concurrently.
以下是对 sync.Map 的 Load/Store/Delete 等常用操作的图解: