How do I update code running as a daemon with zero downtime?

如何更新代码运行作为一个零停机时间的恶魔？

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Option 2: Clusters with Connection Manager and zero downtime during upgrade.

选项2：使用Connection Manager且升级过程中零停机的集群。

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NO D.N.S. CRASHES The company claims that in its five-year history, its D.N.S. computers have had zero downtime.

告别d.n.s.崩溃：OpenDNS声称在其五年的运营历史上，其域名解析服务器从未挂过机。

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And if air travel is more your speed, why not take to the skies aboard this zero-emission Elektra airplane, which spends its downtime soaking up the suns rays in a solar hangar.

ENGADGET: Inhabitat's Week in Green: electric cars, solar planes, and really sweet lights