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The essence of high availability
2022-07-07 08:57:00 【bboyzqh】
I occasionally read an article sent by Alibaba technology today 《 High availability essence 》, I think it's well written , It shows the essence of stability , To sum up .
The risk expectation value indicates the potential hazard degree of the risk , Its components and calculation formula are shown in the figure below :
According to the above definition , If the system wants to achieve high availability , Need to constantly reduce the total expectation of risk , That is, consider from four dimensions : Reduce the number of risks 、 Reduce the risk of failure 、 Shorten the duration of influence and reduce the scope of fault influence , At the same time, it summarizes the high availability architecture design 7 The big core principle is shown in the figure below :
The above principles are enough to guide the stability construction of our system !
Reference resources : High availability essence :https://mp.weixin.qq.com/s/CkFHTuxqoj1WJ7d0HUEbAg
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