PyKeyVal

Heavily inspired by keyv

PyKeyVal is a key-value store that you can pack in a bag and take with you.

Installation

To install PyKeyVal, simply:

pip install pykeyval

or from source:

python setup.py install

Getting Started

>>> import pykeyval
>>> kv = pykeyval.PyKeyVal(url='sqlite:///opt/myapp/db.sqlite')
>>> kv.set('key', 'val')
True
>>> kv.get('key')
'val'

API

get(key)

Returns the value set for key key.

set(key, val)

Sets the key key to a value val. Returns True.

delete(key)

Deletes the key key. Returns True if the key existed.

clear()

Deletes all keys in the current name and namespace. Returns True.

Storage Backends

PyKeyVal supports the following backends:

Database	Interface	Required Arguments	Options
Memory	DictKeyVal
File	FileKeyVal	name	path
Redis	RedisKeyVal	url, name	namespace
Snowflake	SnowKeyVal	url, name	namespace
SQLite	SQLiteKeyVal	url, name	namespace
PostgreSQL	Coming soon
MySQL	Coming soon

Namespaces

PyKeyVal allows you to setup namespaces for database backends to prevent key collisions.

Serializers

PyKeyVal uses python's builtin json library to perform data serialization across multiple backends for data consistency.

You can hook up your own serializer by passing in a serializer class that implements serialize and deserialize:

class PickleSerializer:
    def serialize(data):
        pickle.dumps(data)
    def deserialize(data):
        pickle.loads(data)

kv = PyKeyVal(serializer=PickleSerializer)