线程池使用

¥Threadpool usage

所有基于回调和 promise 的文件系统 API（fs.FSWatcher() 除外）都使用 libuv 的线程池。这可能会对某些应用产生令人惊讶的负面性能影响。有关更多信息，请参阅 UV_THREADPOOL_SIZE 文档。

¥All callback and promise-based file system APIs (with the exception of fs.FSWatcher()) use libuv's threadpool. This can have surprising and negative performance implications for some applications. See the UV_THREADPOOL_SIZE documentation for more information.