TLDR Tech / DevOps
From latency to instant: Modernizing GitHub Issues navigation performance
GitHub has re-engineered Issues navigation with a local-first architecture, incorporating IndexedDB caching, preheating, in-memory layers, and service workers to achieve near-instantaneous repeated issue views. This initiative significantly improved navigation speeds, with many React paths now loading under 200 ms, while ongoing efforts focus on optimizing remaining JavaScript boot and server-rendering bottlenecks.
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