cacher_mod module

Provides a Cacher class, for caching database tables from gdbm files.

class cacher_mod.Database_cacher(max_entries)

Bases: object

A Database Cache class, for caching database tables from key-value stores.

The cache is LRU: We evict the Least Recently Used table when we need more room.

close()

Expire all entries from the cache.

expire_all()

Expire all entries from the cache.

expire_down_to(down_to=None)

Expire entries from the cache until we have < down_to entries.

keys()

Give us a list of filenames in the cache.

exception cacher_mod.Database_cacher_duplicate_error

Bases: Database_cacher_error

An exception for when we have a duplicate filename.

exception cacher_mod.Database_cacher_error

Bases: Exception

A generic exception for cacher errors.

exception cacher_mod.Database_cacher_time_error

Bases: Database_cacher_error

An exception for when we have a timing problem.