Skip to content

Reuse chained xxhash BlockHasher #97

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom
Open
wants to merge 3 commits into
base: main
Choose a base branch
from
Open

Reuse chained xxhash BlockHasher #97

wants to merge 3 commits into from

Conversation

sagiahrac
Copy link
Contributor

What

  • Introduce BlockHasher
  • Deterministic xxhash64 digest.
  • Per-block hash = H(prev_hash || block_bytes) (little-endian prev hash).
  • Maintains previousHash across calls; exposes ComputeBlockHash and GetPreviousHash.
  • Update the default LRU prefix store to use the new hasher for block keys.

Why

  • Single, canonical block-hash computation shared by prefix stores.
  • Ensures consistent keys for KV cache/prefix reuse.

#96

@sagiahrac sagiahrac force-pushed the extract-block-hasher branch from 34e1725 to b0fc5de Compare August 25, 2025 17:12
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Reviewers
No reviews
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

Successfully merging this pull request may close these issues.
1 participant
@sagiahrac