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| author | Christophe Besson <cbesson@gmail.com> | 2026-10-08 01:27:58 +0200 |
|---|---|---|
| committer | Christophe Besson <cbesson@gmail.com> | 2026-10-08 01:27:58 +0200 |
| commit | c27e04c88557716bbe8e42b9174ba9b07f90facf (patch) | |
| tree | a1a56edbede2bba9bb0cc99b81b98570b8313915 /docs/playlists.md | |
| parent | cdd5fd52e981c4c59643e7dee705b6c55acae68e (diff) | |
| download | meshbay-c82e6b73295b8fc647f6103c55b8e410b90d3d58.tar.gz | |
perf(node): sample 9 MB with the size above 9 MB, keep known ids0.19
hash_version 3: size + first 4 MB + last 4 MB + 1 MB at the middle,
5.5x faster cold on a USB disk than the 45 MB sample. The cache now
serves a hit under whatever version it holds, so no existing id moves.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Diffstat (limited to 'docs/playlists.md')
| -rw-r--r-- | docs/playlists.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/playlists.md b/docs/playlists.md index f1f6b67..05e6776 100644 --- a/docs/playlists.md +++ b/docs/playlists.md @@ -447,7 +447,7 @@ Each field prevents a specific failure: playlist is a column of hex strings. A display problem, solved by copying four small strings. - **`hv`** — the index already has two hashing schemes (`protocol.py:297`: - 1 = whole file, 2 = 45 MB sample). A re-hash would orphan every entry in every + 1 = whole file, 2 = 45 MB sample, 3 = size + 9 MB sample). A re-hash would orphan every entry in every playlist, silently and all at once. - **`p`** — content addressing survives a move; a path survives a re-encode. Keeping both means either can repair the other: on a sight of the live index, |