Posted on 2005-11-08 10:26
鋒出磨礪 閱讀(634)
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體系結(jié)構(gòu)
從架構(gòu)的服務(wù)級(jí)別上總結(jié)架構(gòu)師所要的做的工作就是在有限資源下權(quán)衡并且做出
系統(tǒng)的最佳架構(gòu) 來(lái)保證
Scalability - the ability to support the required quality of service as the load increases
Maintainability - the ability to correct flaws in the existing functionality without impacting other components/systems
Reliability - the assurance of the integrity and consistency of the application and all of its transactions. Reliability spans from the OS to the Application to the service provided.
Availability - the assurance that a service/resource is always accessible
Extensibility - the ability to add/modify additional fuctionality without impacting existing functionality
Manageability - the ability to manage the system in order to ensure the continued health of a system with respect to scalability, reliability, availability, performance, and security.
安全性是目前比較難解決的機(jī)制。
在架構(gòu)的定義中，必須包括了持續(xù)性，分布，通信，事務(wù)管理以及安全管理等基礎(chǔ)性建筑。
滿足系統(tǒng)的業(yè)務(wù)和服務(wù)級(jí)別需求，是架構(gòu)師的目標(biāo)。在有限的資源下，盡大可能的滿足是職責(zé)。而提高滿足是架構(gòu)師的能力。