Can't use URL and PASSWORD in the config at the same time

[dschmide]

When defining a password and URL in the config, only the URL will be used

The following config will not work as expected, no password will be used.

config = {
'CACHE_TYPE': 'RedisCache',
'CACHE_REDIS_URL': 'redis://localhost:6379/0',
'CACHE_REDIS_PASSWORD': 'test'
}

It is unintuitive that the password is ignored even though it is defined in the config. If this is intended, the documentation should reflect that the URL always takes precedence and parameters that are defined by the URL are ignored (such as host, port, db and password).
Maybe the individual parameters should be dropped entirely in favor of using the URL as the only way to make a connection to avoid confusion, or a warning should be thrown when both parameters are used at the same time.

Environment:

• Python version: 3.9
• Flask-Caching version: 2.3.0