How would you design a cloud-native app? What would your architecture look like? To what principles, patterns, and best practices would you adhere? What infrastructure and operational concerns would be important?
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A widely accepted methodology for constructing cloud-based applications is the Twelve-Factor Application. It describes a set of principles and practices that developers follow to construct applications optimized for modern cloud environments. Special attention is given to portability across environments and declarative automation.
While applicable to any web-based application, many practitioners consider Twelve-Factor a solid foundation for building cloud-native apps. Systems built upon these principles can deploy and scale rapidly and add features to react quickly to market changes.
An excellent reference guide for understanding microservices is .NET Microservices: Architecture for Containerized .NET Applications. The book deep dives into microservices design and architecture. It's a companion for a full-stack microservice reference architecture available as a free download from Microsoft.
You should architect and design software solutions with maintainability in mind. The principles outlined in this section can help guide you toward architectural decisions that will result in clean, maintainable applications. Generally, these principles will guide you toward building applications out of discrete components that are not tightly coupled to other parts of your application, but rather communicate through explicit interfaces or messaging systems.
In classes, encapsulation is achieved by limiting outside access to the class's internal state. If an outside actor wants to manipulate the state of the object, it should do so through a well-defined function (or property setter), rather than having direct access to the private state of the object. Likewise, application components and applications themselves should expose well-defined interfaces for their collaborators to use, rather than allowing their state to be modified directly. This approach frees the application's internal design to evolve over time without worrying that doing so will break collaborators, so long as the public contracts are maintained.
In 2009, IDEO designed and launched the HCD Toolkit, a first-of-its-kind book that laid out how and why human-centered design can impact the social sector. In short order, a community of designers, entrepreneurs, and social sector innovators embraced it, buying and downloading over 150,000 copies. 2ff7e9595c
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