In Go, can we synchronize each key of a map using a lock per key?

Question

In Go, can we synchronize each key of a map using a lock per key? Is map level global lock always required? The documentation says that any access to map is not thread safe. But if a key exists, then can it be locked individually?

Answer 1

不完全是，但如果你只是从地图上读指针并修改指示物，那么你就不会修改地图本身。

Answer 2

这是您想要的简单实现：mapmutex。

基本上，互斥锁用于保护地图，地图中的每个项目都像“锁定”一样使用。