jdbm 1.0

Journaling dbm

Journaling dbm

Allowed backends

• ‘memory’ (mostly for tests)

• ‘tc’ (tokyo cabinet)

Usage

>>> from jdbm import jdbm
>>> db = jdbm('tc', filename='var/readme-test.tc',
...     journal_filename='var/readme-test.journal.tc')

Standard operations:

>>> db.put('a', 'foo')
>>> db.put('b', 'bar')
>>> db.get('a')
'foo'
>>> set(k for k in db)
set(['a', 'b'])
>>> db.exists('a')
True
>>> db.delete('a')
>>> db.length()
1

Restore db from journal:

>>> db.clear(journaling=False)
>>> db.length()
0
>>> db.restore_from_journal()
>>> db.length()
1