Skip to main content

rc, the redis cache

Project description

rc: the redis cache

rc - the redis cache.

  • easy to use
  • can build cache cluster
  • batch-fetch multiple cache results (do it in parallel for cluster)

For full documentation see rc.readthedocs.org.

Installation

$ pip install rc

Quickstart

A minimal cache example looks like this:

from rc import Cache

cache = Cache()
assert cache.set('key', 'value')
assert cache.get('key') == 'value'
assert cache.get('foo') is None
assert cache.set('list', [1])
assert cache.get('list') == [1]

A cache cluster use a redis cluster as backend:

from rc import CacheCluster

cache = CacheCluster({
    'cache01': {'host': 'redis-host01'},
    'cache02': {'host': 'redis-host02'},
    'cache03': {'host': 'redis-host03'},
    'cache04': {'host': 'redis-host04', 'db': 1},
})

Cache decorator:

@cache.cache()
def load(name, offset):
    return load_from_database(name, offset)

rv = load('name', offset=10)

Batch fetch multiple cache results:

assert cache.get_many('key', 'foo') == ['value', None]

# for cache decorated function
@cache.cache()
def cached_func(param):
    return param

results = []
# with the context manager, the function
# is executed and return a promise
with cache.batch_mode():
    for i in range(10):
        results.append(cached_func(i))
for i, rv in enumerate(results):
    assert rv.value == i

Cache invalidation:

cache.delete('key')
# for decorated function
cache.invalidate(load, 'name', offset=10)

Better

If you feel anything wrong, feedbacks or pull requests are welcomed.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for rc, version 0.1.1
Filename, size File type Python version Upload date Hashes
Filename, size rc-0.1.1-py2-none-any.whl (14.9 kB) File type Wheel Python version 2.7 Upload date Hashes View
Filename, size rc-0.1.1.tar.gz (11.6 kB) File type Source Python version None Upload date Hashes View

Supported by

Pingdom Pingdom Monitoring Google Google Object Storage and Download Analytics Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page