redis-collections 0.13.0

Standard collections

The standard collections (e.g. Dict, List, Set) behave like their Python counterparts:

>>> from redis_collections import Dict, List, Set

>>> D = Dict()
>>> D['answer'] = 42
>>> D['answer']
42

Syncable collections

The syncable collections in this package provide types whose contents are kept in memory. When their sync method is called those contents are written to Redis:

>>> from redis_collections import SyncableDict

>>> with SyncableDict() as D:
...     D['a'] = 1  # No write to Redis
...     D['a'] += 1  # No read from or write to Redis
>>> D['a']  # D.sync() is called at the end of the with block
2

Other collections

The LRUDict collection stores recently used items in in memory. It pushes older items to Redis:

>>> from redis_collections import LRUDict

>>> D = LRUDict(maxsize=2)
>>> D['a'] = 1
>>> D['b'] = 2
>>> D['c'] = 2  # 'a' is pushed to Redis and 'c' is stored locally
>>> D['a']  # 'b' is pushed to Redis and 'a' is retrieved for local storage
1
>>> D.sync()  # All items are copied to Redis

The SortedSetCounter provides access to the Redis Sorted Set type:

>>> from redis_collections import SortedSetCounter

>>> ssc = SortedSetCounter([('earth', 300), ('mercury', 100)])
>>> ssc.set_score('venus', 200)
>>> ssc.get_score('venus')
200.0
>>> ssc.items()
[('mercury', 100.0), ('venus', 200.0), ('earth', 300.0)]