Long time ago (about 5 years, at least), I contributed an article to SignalR wiki about scaling SignalR with Redis. You can still find the article here. I also blogged about it here. However, over time, pictures got lost there. I got a few requests from my readers to refresh those images and I was luckily able to find them :) I decided to publish that article here so that I would have a much better control over the content.