明线
... open the subscription list ==> 认股 open thread ==> 明线 open throat shears ==> 开式剪切机 ...
如果提供初始数据之后仍可能存在交互,那么将连接保持为打开状态,因此线程就不能释放出来,服务器也就不能为很多用户服务。
A single visitor doesn't just mean a few incidental page requests; it also means an open connection (with a waiting thread) for as long as the visitor stays.单个的访问不只是意味着一些偶然的页面请求;它还意味着在访问期间有一个持续打开的连接(带有等待线程)。
Within the child thread, open a new connection to DB2 and fetch a row from the lock table for the requested resource ID.在子线程中,打开新的DB 2连接,在锁表中获取具有所请求的资源ID的一行。