Ajax applications can make full use of that to simulate a real-time server-push feature.

Ajax应用程序可充分利用这一点，模拟实时服务器推送技术。

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In this article, I discussed various approaches for simulating a server push, ranging from pure polling to a real-time server push, and noted the strengths and weaknesses of each approach.

这篇文章讨论了几种模拟服务器推送的方法，从纯轮询到实时服务器推送，文中说明了每种方法的优缺点。

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Presence server: a "Presence server" provides the services to collect, manage and distribute the real time availability and the means for communicating among users.

在线状态服务器：“在线状态服务器”提供用于收集、管理和分发实时可用性和用户间的通信方法的服务。

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Incidents, like attempts to hack into a database server, show up in real-time rather than weeks later.

FORBES: Security Data Is Big Data And A Business Advantage