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author | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2012-07-17T22·55-0400 |
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committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2012-07-17T22·55-0400 |
commit | ccc52adfb2121ade510d35dc9b91193af9fa731e (patch) | |
tree | c6314b5198cdfbe9a21633e515203965ee431382 /doc/signing.txt | |
parent | 220818f758d2facc194f567f35ca677ef79393bd (diff) |
Add function queryPathFromHashPart()
To implement binary caches efficiently, Hydra needs to be able to map the hash part of a store path (e.g. "gbg...zr7") to the full store path (e.g. "/nix/store/gbg...kzr7-subversion-1.7.5"). (The binary cache mechanism uses hash parts as a key for looking up store paths to ensure privacy.) However, doing a search in the Nix store for /nix/store/<hash>* is expensive since it requires reading the entire directory. queryPathFromHashPart() prevents this by doing a cheap database lookup.
Diffstat (limited to 'doc/signing.txt')
0 files changed, 0 insertions, 0 deletions