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.
四川南江县，“南江黄羊”是这里特有的山羊品种。如何让特色产业成为增收产业？
，这一点在safew官方版本下载中也有详细论述
backpressure: 'strict' // or 'block', 'drop-oldest', 'drop-newest'
2. 不改变已有字段/接口语义
append again has to allocate a new backing store, this time of size