系統設計Design For Failure思想 Complex systems fail in spectacular ways. Failure isn’t a question of if, but when. Resilient systems recover from failure; r... ...
系統設計Design For Failure思想
Complex systems fail in spectacular ways. Failure isn’t a question of if, but when. Resilient systems recover from failure; robust systems resist failure. Avoid single points of failure. Accept the fact that you have to build a distributed system.
1、假定任何環節都有可能出問題，然後倒推依次設計
2、避免單點故障（single point of failure）
3、目標:應用能夠連續工作，服務一直可用
4、充分考慮到多可用區AZ（availability zone）
Traditionally we've tried to "avoid" failure by doing whatever we could to make services/components "not fail". We would deploy monolithic "appliances" (hardware or software) and if that appliance failed it was a significant event. As we start to move toward distributed systems, especially Microservices, we find that there are many more points of failure. Microservices are implemented as a collection of services that evolve independently and interact and react to their surrounding environments including the changing of user/customer behaviors, business strategy/direction, system behavior, and even other services. One premise of these types of complex-adaptive systems is the ability to withstand failures and unexpected faults.
To do this, you must design your services with failure in mind. There are a handful of practices that come to mind:
- maximize service availability
- self healing
- isolate the "blast radius" of any single failure
- continually prove your system has been designed for failure
最後以一首歌做為結束。The musician Laurie Anderson captured this dynamic in her song “Walking And Falling”: 大家體會一下 Design For Failure
You’re walking. And you don’t always realize it,
but you’re always falling.
With each step you fall forward slightly.
And then catch yourself from falling.
Over and over, you’re falling.
And then catching yourself from falling.
And this is how you can be walking and falling
at the same time.
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
今天先到這兒，希望對您技術領導力， 企業管理，系統架構設計與評估，團隊管理, 項目管理, 產品管理,團隊建設 有參考作用 , 您可能感興趣的文章:
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作者：Petter Liu
出處：http://www.cnblogs.com/wintersun/
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該文章也同時發佈在我的獨立博客中-Petter Liu Blog。
