from redis import Redis, ConnectionPool
from django.conf import settings

_pool = None


def get_redis_pool():
    global _pool
    if _pool is None:
        redis_url = getattr(settings, 'REDIS_URL', 'redis://127.0.0.1:6379/0')
        _pool = ConnectionPool.from_url(url=redis_url, max_connections=100)
    return _pool


class RedisConfig:

    def __init__(self):
        self.redis = Redis(connection_pool=get_redis_pool(), decode_responses=True)