[issue5483] [PATCH]Add FastDbfilenameShelf: shelf nerver sync cache even when writeback=True

R. David Murray added the comment: I agree that caching for speed is something that should be implemented in another layer. It certainly is orthogonal to the writeback issue. The best caching strategy is going to depend on the application, so I don't think caching for speed belongs in Shelv

[issue5483] [PATCH]Add FastDbfilenameShelf: shelf nerver sync cache even when writeback=True

Robert Lehmann added the comment: I addressed the other bug you were experiencing in issue6932. -- ___ Python tracker ___ ___ Python-b

[issue5483] [PATCH]Add FastDbfilenameShelf: shelf nerver sync cache even when writeback=True

Zhigang Wang added the comment: Thanks Robert for pointing out issue553171. After read that issue, I still think we paid too much to make shelf less surprising. We should at lease provide a option for the *smart* programmers to get better speed and less exceptions. The write-back-all-cache-o

[issue5483] [PATCH]Add FastDbfilenameShelf: shelf nerver sync cache even when writeback=True

Robert Lehmann added the comment: If I understand you correctly, your proposal is the following: use Shelf.cache to cache *all* objects instead of only keeping live references. Your patch retains the cache forever instead of purging it on sync. (All these changes only apply with writeback=True,

[issue5483] [PATCH]Add FastDbfilenameShelf: shelf nerver sync cache even when writeback=True

Zhigang Wang added the comment: Add some errata of the patch: add the new class to __all__. -- Added file: http://bugs.python.org/file13318/fast_shelf-v2.patch ___ Python tracker ___

[issue5483] [PATCH]Add FastDbfilenameShelf: shelf nerver sync cache even when writeback=True

New submission from Zhigang Wang : shelf without writeback=True is too slow, while shelves with writeback=True takes too much time to close. And even worse, these codes can not run: $ cat test_shelve.py #!/usr/bin/env python import shelve store = shelve.open("/tmp/shelve.db", writeback=True)