Why it matters

SGLang combines DSL + fast runtime. Understanding shapes advanced inference.

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The architecture

Python DSL: gen(), fork(), etc.

Runtime: RadixAttention for prefix sharing.

SGLang stackPython DSLgen + fork + chooseRadixAttentionprefix trie sharingFast runtimepeer of vLLMDSL enables structured programs; RadixAttention shares prefixes across turns + branches
SGLang.
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How it works end to end

RadixAttention: prefix radix tree for sharing.

DSL: parallel + branching primitives.

Speculative decoding + FP8.