LibSlack: The C++ Library at the Foundation of Our Client Application Architecture

This post details the initial development and rationale behind LibSlack, a cross-platform C++ library designed to encapsulate common business logic and data handling for Slack's client applications. It explains the 'LibSlack sandwich' architecture, the focus on data caching and offline functionality, the choice of C++ as the core language, the use of Djinni for API generation, and the strategies for development, debugging, and testing. The post highlights the benefits of code sharing for consistency and reduced development effort, while also acknowledging the challenges of cross-language integration and performance.