July 5th, 2024

Synchronous Core, Asynchronous Shell

Gary Bernhardt proposed a Synchronous Core, Asynchronous Shell model in software architecture, blending functional and imperative programming. Rust faces challenges integrating sync and async functions, leading to a trend of adopting this model for clarity and control.

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Synchronous Core, Asynchronous Shell

Gary Bernhardt introduced the concept of a Synchronous Core, Asynchronous Shell in software architecture, emphasizing functional programming for logic and imperative programming for side effects. This approach aims to enhance understanding, testing, and flexibility without the complexities of purely functional programs. Recent discussions in the Rust community have highlighted challenges with integrating synchronous and asynchronous functionalities, particularly regarding function composition. The author reflects on applying this architecture in Rust services, noting a trend towards using a synchronous core and asynchronous shell pattern. By segregating synchronous and asynchronous code into core and shell components, respectively, the author suggests improved clarity and control over side effects. Function coloring, indicating the distinction between synchronous and asynchronous functions, is viewed positively as a safeguard against unintended side effects. The author recommends using the command pattern to trigger side effects from the core, promoting a structured approach to managing interactions between synchronous and asynchronous code.

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Synchronous Core, Asynchronous Shell

Synchronous Core, Asynchronous Shell

A software architecture concept, "Synchronous Core, Asynchronous Shell," combines functional and imperative programming for clarity and testing. Rust faces challenges integrating synchronous and asynchronous parts, prompting suggestions for a similar approach.

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By @whalesalad - 3 months
Reminds me I need to revisit my archive of Destroy All Software videos. They really are gems.