I'm trying to use Redis as my session store, which seem to work just fine. However I can't figure out how to let multiple instances of Sinatra access the same session. This is what I have in my config.ru:
require 'redis-rack'
use Rack::Session::Redis, :redis_server => "redis://#{ENV['REDIS_HOST']}:6379/0"
I must be missing an argument to set this, but the documentation is lacking for this case: https://github.com/redis-store/redis-rack
Maybe that's not what I want to achieve this behavior?
The end goal is to be deploying my Sinatra application with docker to a clustered environment so I can release new versions without downtime. So whatever let's me share the rack session between multiple instances works. I suppose I could create a redis object manually and not use the session keyword, just seems like the wrong way to do it.