Meta’s Memory Layer pushes Instagram Reels item coverage to 100% and freshness to 20 seconds
_reachsumit · x · 2026-07-29
Meta’s Memory Layer trains an in-model key-value cache alongside the recommender itself, so training and serving share one source of truth for item embeddings.
- Deployed on Instagram Reels.
- Raises coverage from 96% to 100%.
- Cuts embedding freshness from about 5 minutes to about 20 seconds.
- Narrows the training-serving NE gap by up to 86% and more than doubles recall for the freshest content.
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