mirrors/git-annex
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages 1 Wiki Activity Actions

update

Browse source
This commit is contained in:
Joey Hess 2015-02-15 14:29:27 -04:00
parent 3684e4d551
commit e79c3fff23
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
doc/design/caching_database.mdwn
View file

@ -123,6 +123,11 @@ eg, esquelito.
Update2: Using esquelito to do a join got this down to 0.109s.
See `database` branch for code.
Update3: Converting to a single un-normalized table for AssociatedFiles
avoids the join, and increased lookup speed to 0.087s. Of course, when
a key has multiple associated files, this will use more disk space, due
to not normalizing the key.
Compare the above with 1000 calls to `associatedFiles`, which is approximately
as fast as just opening and reading 1000 files, so will take well under
0.05s with a **cold** cache.