Configure redis-connection.

DefaultDialFunc should always used.

Get a connection for the Redis-pool.

GetString fetches the value of a key in Redis as a string.

Process redis subscriptions NOTE: There Can Only Be One!.

WatchKey waits for a key to be updated or expired.

WatchKeyStatusAlreadyChanged is returned when the value passed by the caller was never observed.

WatchKeyStatusNoChange is returned when the function had to return before observing a change.

WatchKeyStatusSeenChange is returned when we have seen the value passed by the caller get changed.

WatchKeyStatusTimeout is returned when the watch timeout provided by the caller was exceeded.

KeyChan holds a key and a channel.

WatchKeyStatus is used to tell how WatchKey returned.