与其说是技术问题，不如说是一个被长期忽视的基础工程问题。
For implementers, the locking model adds a fair amount of non-trivial internal bookkeeping. Every operation must check lock state, readers must be tracked, and the interplay between locks, cancellation, and error states creates a matrix of edge cases that must all be handled correctly.
，这一点在旺商聊官方下载中也有详细论述
Terrific ease of use
And what software?