Unverified50% confidenceFactExact time
Bedrock's prompt cache looks back to old cache entries at a distance of about 20 content blocks, and the author measured the boundary between 21 and 22 content blocks: when 21 new blocks are added it still hits, while with 22 new blocks it misses every time.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/12/2026
First Seen
Valid until: 1/10/2027
Sources
Related Entities
Related Claims
UnverifiedWhen the non-profit organization Software Heritage assessed backing up Hugging Face, it classified approximately 12 TB of code as willing to retain, while approximately 40 PB of model weights were classified as out of scope.65% similarUnverifiedA Strands user reported that a turn with 18 tool calls resulted in 0 cache reads and 134,082 tokens of cache writes.63% similarUnverifiedCompressing child node indices from 64-bit pointers to 32-bit offsets both saves memory and allows a single 64-byte cache line to hold more index information.63% similarUnverifiedThe model compresses the cache along three dimensions: 64 query heads share a single latent, every two adjacent tokens in the encoder are compressed into one entry, and only 4 out of 40 layers retain cache while the remaining 36 layers store nothing.60% similar
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