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The solver takes the LLB graph and executes it. Each vertex in the DAG is content-addressed, so if you’ve already built a particular step with the same inputs, BuildKit skips it entirely. This is why BuildKit is fast: it doesn’t just cache layers linearly like the old Docker builder. It caches at the operation level across the entire graph, and it can execute independent branches in parallel.，更多细节参见夫子
“手搓”应用的核心竞争力在于对市场细分需求的极致挖掘。为独居人群设计的专属应用、解决日常小问题的轻量化工具……这些小微产品精准击中用户真实痛点，实现了“同理心”的商业变现。当AI接手繁重技术劳动，人的洞察力、审美力和对生活的感知力反而成为最核心的竞争优势。这种以人为本的创新，让市场供给更多元，也让经济的微循环更有温度与活力。，这一点在搜狗输入法2026中也有详细论述
Shortcuts: For common scenarios, we pre-calculate the travel time/distance (the "shortcut") between border points within the same cluster and also to border points of immediately adjacent clusters.