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At the heart of BuildKit is LLB (Low-Level Build definition). Think of it as the LLVM IR of build systems. LLB is a binary protocol (protobuf) that describes a DAG of filesystem operations: run a command, copy files, mount a filesystem. It’s content-addressable, which means identical operations produce identical hashes, enabling aggressive caching.
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（九）提供区块链服务的，应当采取监测发现、防范、阻断、处置在区块链上发布、传播违法信息、病毒木马、恶意程序或者为违法犯罪活动提供支付结算等帮助的措施；，详情可参考91视频
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第四十八条 国家依法对核以及核两用物项出口进行严格管制，实行许可制度。