2.1.0+ can't remove keys from the session about redis-rack

[pelargir]

We're having the same problem (sticky flash messages) in v2.1.1 but when I downgrade to v2.1.0 the problem goes away. We're also using the latest rack v2.1.2 so that might have something to do with it. @cheald what version of rack are you using?

[ukdave]

Same here (flash messages not disappearing) in v2.1.1. Downgrading to v2.1.0 fixes the issue. I'm also using rack v2.1.2.

[tubbo]

i've yanked v2.1.1 and reverted the code that was causing the problem. Continuing to use v2.1.0 should be fine for now.

[cheald]

Ah, oops, I guess it is just 2.1.1. Thanks for the quick attention.

FWIW, I think that feature is broadly unnecessary. Redis operations are atomic and serialized already, and the behavior for other session stores (such as cookie) is that the last request to return wins. There's not really a race condition so much as a lack of transactions, and I'm of the opinion that if one needs transactional session storage, one should probably be using a transactional data store to get it.