Details

Resolves #5077, resolves #1285

• Redis URL parser adapted from gitea project for Go implementation
• Redisstore adapted from BoxGo for Go implementation

Changes

New Features

• Uses one URL for configuration of Redis (shared between Go and Python)
• The Python URL parser has been created in a way to resemble the Go version
• By default uses Redis for broker, channel, backend (current state), but also allows for custom options
• Moves part of configuration currently under redis category into new dedicated sections -> split into root: Restructure broker / cache / channel / result configuration #7097
• Adds deprecation check to config parser to allow for easy transition between old and new configuration scheme
• Old Redis configuration env vars are automatically converted to a Redis config URL if no Redis config URL has been configured otherwise they are ignored
• The new Redis URL allows environment variables to be included in bash style ${VAR}

Breaking Changes

• Several new Redis configuration env vars are no longer supported as everything is handled using the URL

Additional information

• Newly supported Redis configurations are only available using the new Redis config URL environment variable
• The Redis config URL requires special characters in parameters to be URL encoded (e.g. username, password)

Todo

• Breaking change shall be removed by automatically converting current config options to URL
• Tests are currently missing
• Find a way to fix Does channels-redis support redis cluster?I meat some problems when I use channels-redis with redis cluster. django/channels_redis#345
• Not tested for unix socket connection
• Not working for Redis cluster -> new PR required
• Add documentation on how the new Redis config URL works
• Split PR into Dockerfile adjustments, env variable deprecation logic and Redis URL parsing -> does not make sense