Limit connection pool size

[yuvadm]

There should be a way to limit size of Redis connection pool with the redis-py max_connections parameter.

Deployments with hard limits on number of connections (i.e. using third-party Redis services) fail when connections are dropped due to these limits.

[sebleier]

I'll add something in this week.

[dlitwak]

Has there been any update on this front?

[sebleier]

@dlitwak Thanks for reminding me. I've updated the cache backend (and is available on PyPI) so you can specify a connection pool class and the kwargs to initialize it.

For example:

CACHES = {
        'default': {
            'BACKEND': 'redis_cache.RedisCache',
            'LOCATION': '<host>:<port>',
            'OPTIONS': {
                'DB': 1,
                'PASSWORD': 'yadayada',
                'PARSER_CLASS': 'redis.connection.HiredisParser',
                'CONNECTION_POOL_CLASS': 'redis.BlockingConnectionPool',
                'CONNECTION_POOL_CLASS_KWARGS': {
                    'max_connections': 50,
                    'timeout': 20,
                }
            },
        },
    }