Support for twem-proxy.

[HelloGrayson]

Wondering what it would take to simplify the RedisStorage adapter to avoid methods twemproxy doesn't support - (lock, pipeline, script load, etc). Those looking to solve a high availability story will no doubt want to employ twemproxy for redis replication.

https://github.com/alisaifee/flask-limiter/blob/master/flask_limiter/storage.py#L268

Thoughts?

[alisaifee]

Hi @breerly. Thanks for the feedback.
I tried it out and with some juggling it would be possible to create a Storage subclass that is specific for twemproxy backed redis.

• Do not load script in constructor and do it lazily in get_moving_window
• disable transactions for pipeline
• allow overriding the lock implementation

This would still require you to implement your own RedisTwemProxy storage - would that work for you?

[HelloGrayson]

This sounds great.

[alisaifee]

RedisStorage refactored in 0dd94b2 and released in 0.7