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Your inference server OOMs when requests arrive with long prompts. How do you handle variable-length memory?

A serving box that's stable on short prompts crashes the moment a 30k-token request lands, because KV-cache memory scales with sequence length times batch. Here is how to bound it without crashing.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

A serving box that's stable on short prompts crashes the moment a 30k-token request lands, because KV-cache memory scales with sequence length times batch. Here is how to bound it without crashing.

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