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Prompt-and-pray parsing breaks in production the day a model emits a trailing comma. Constrained decoding makes invalid output structurally impossible — and it's usually faster, not slower. Here's the working setup, end to end.
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Semantic caching trades a small, real risk of serving the wrong answer for a large cost and latency win — worth it for FAQ, docs, and support Q&A, dangerous anywhere small wording changes should change the answer.
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The number-one webhook bug is parsing the JSON before you verify it, which silently rewrites the exact bytes you were supposed to check.
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Four algorithms, one question — do you want to smooth traffic, count it fairly, or forgive a burst? Pick the one whose flaw you can live with.
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