Provides a PostgreSQL implementation of the Cache Interface for Python.
The easiest way to install the Cache PostgreSQL Adapter is to get the latest version from PyPI:
# using poetry
poetry add rndi-cache-postgresql-adapter
# using pip
pip install rndi-cache-postgresql-adapterThe used interface is rndi.cache.contracts.Cache.
Just initialize the class you want and use the public methods:
from rndi.cache.contracts import Cache
from rndi.cache.adapters.postgresql.adapter import PostgreSQLCacheAdapter
def some_process_that_requires_cache(cache: Cache):
# retrieve the data from cache, ir the key is not cached yet and the default
# value is a callable the cache will use it to compute and cache the value
user = cache.get('user-id', lambda: db_get_user('user-id'))
print(user)
# inject the desired cache adapter.
cache = PostgreSQLCacheAdapter(
'localhost',
'database_name',
'username',
'password',
ttl=900, # optional
port=5432 # optional
)
some_process_that_requires_cache(cache)