Modal engineer's deep dive into how vLLM and SGLang inference engines work
charles_irl · x · 2026-10-27
charlesirl from Modal published a deep dive into how modern LLM inference engines actually work under the hood, covering frameworks like vLLM and SGLang.
For engineers who use these inference engines daily without knowing the internals, the article offers a systematic walkthrough of the underlying mechanisms — a solid starting point for understanding what happens beyond the API call.
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