Check health of connection to Redis

First of all, thanks for this crate! This and async-session have been really useful in setting up the project I'm working on.

I have a feature request, though; I want to be able to check the current connection to Redis to make sure it is still working, for a healthcheck endpoint. I believe I can do that by just calling .get_connection() on the redis client, but that is a private field in RedisSessionStore so it needs to be implemented on there.

I can just add a trait to do this and hack around it, but I thought it'd be better to add to the actual crate for others to use. I'm going to make a PR to add this feature, just thought I should make an issue first to explain my reasoning.

[jbr]

It's been a bit since I looked at this code, so just to confirm: RedisSessionStore::connection doesn't meet this need? Could you explain the difference?

It's been a bit since I looked at this code, so just to confirm: RedisSessionStore::connection doesn't meet this need? Could you explain the difference?

connection would work, but it is a private function. If you wanted to make that public, could do that, but then you are leaking the Redis connection out of the struct.