PostgreSQL是一款强大而灵活的开源数据库管理系统,具有广泛的用户群体和活跃的社区。在 PostgreSQL 的众多特性中,有一项非常实用的函数是 pg_blocking_pids。本文将详细介绍这个函数的作用、使用示例以及总结说明,以便...
During application development, we often confront terms like "Blocking," "Non-blocking," "Synchronous," and "Asynchronous." It's a common misconception to view ......
只有当receive buffer为空时,blocking模式才会等待,而nonblock模式下会立即返回-1(errno = EAGAIN或EWOULDBLOCK)