Journaling dbm
- 'memory' (mostly for tests)
- 'tc' (tokyo cabinet)
>>> 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