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The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

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Gene Kim
Gene Kim

Gene Kim is a renowned researcher born on January 11, 1971. He has extensive experience and in-depth knowledge in the fields of information technology and software development. more

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“Instead of merely documenting the specifications of the production environment in a document or on a wiki page, we create a common build mechanism that creates all of our environments, such as for development, test, and production. By doing this, anyone can get production-like environments in minutes, without opening up a ticket, let alone having to wait week.s”

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“If the application is event-driven, it can be decoupled into multiple self-contained components. This helps us become more scalable, because we can always add new components or remove old ones without stopping or breaking the system. If errors and failures are passed to the right component, which can handle them as notifications, the application can become more fault-tolerant or resilient. So if we build our system to be event-driven, we can more easily achieve scalability and failure tolerance, and a scalable, decoupled, and error-proof application is fast and responsive to users.”

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“Evolving a widely reused resource also requires coordination because changes must be compatible with all existing systems or users. Such coordination can slow down innovation... Some digital companies have even begun to explicitly favor duplication because their business environment rewards economies of speed.”

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“Even if the ecosystem doesn’t change, what about the gradual erosion of architectural characteristics that occurs? Architects design architectures, but then expose them to the messy real world of implementing things atop the architecture. How can architects protect the important parts they have defined?”

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“All too often architects make a decision that is the correct decision at the time but becomes a bad decision over time because of changing conditions like dynamic equilibrium. For example, architects design a system as a desktop application, yet the industry herds them toward a web application as users’ habits change. The original decision wasn’t incorrect, but the ecosystem shifted in unexpected ways.”

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