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From Snakes to Crabs: Rewriting Feature Flag Evaluation Infrastructure at Web Scale

The full story of rewriting a feature flag service from Django to Rust at 500k req/min – the decision, the architecture, the results, and what happened after.

23 minutes
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Dylan Martin, Engineering Lead at PostHog

Dylan leads the feature flag team lead at PostHog. He loves typed languages, skiing, jazz piano, producing music, and powerlifting.

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