The haproxies balance requests to all the other app server nodes so any one of them can become master at any moment.

这些haproxy可以将请求均横至其他的应用服务器节点上，这样任何节点都能够成为主节点。

youdao

You are your own master when you can keep everything around you in balance.

当你把一切控制在你的平衡之中时，你才是自己的主人。

youdao

I actually love the challenge of these polarities. The question really is: how do you master the balance?

我喜欢这些矛盾关系所带来的挑战。问题在于：你如何掌握平衡？

youdao

Directors should also put in more time: five or six days a year is not enough to master a labyrinthine balance-sheet.

ECONOMIST: How banks can improve their approach to risk management

With his backroom savvy, copious network and tidy bank balance, he is also a master of Thailand's old-style politicking.

CNN: 'I Have Time'

One important trick that any popular historian must master is that of achieving a balance between rigour and readability.

ECONOMIST: Easter Island