clawbot
ef3ebc462e
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Requests that missed the same variant at once each fetched and transcoded it. They now share one call through golang.org/x/sync/singleflight, keyed on the variant cache key. The first request processes the variant with a context that ignores its cancellation but keeps its deadline; the others wait for its result, holding no connection or processing slot, and return as soon as their own context ends. The processing request waits even then, up to its deadline. Each request counts one miss; the processing counts its fetch and transcode once. A panic while processing is reported through the request's Sentry hub, when there is one, and becomes an error instead of stopping pixad. Model: opus-5-5