Because application servers use limited thread pools, continuous use of a thread prevents an application server from handling other requests while sending or receiving a message using these protocols.

由于应用服务器使用有限的线程池，持续使用一个线程将使应用服务器在使用这些协议发送和接收消息时无法处理其他请求。

youdao

Ah, but those features are coupled, because both kinds of page requests are served by the same request-handling thread pools in the same app servers.

然而，这些功能是互相耦合的，因为页面请求都是同一个应用服务器上的同一个请求处理线程池来处理的。

youdao