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Zammad 5.2 extremely slow since update from 5.0 - Technical assistance - Zammad - Community
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Puma and Nginx Configuration not Working in AWS production server - Technical assistance - Zammad - Community
Let's build a chat with ActionCable - Zweitag
Action Cable and WebSockets: An in-Depth Tutorial — SitePoint
Brad Gessler on Twitter: "The remaining problem I need to solve is finding a Ruby web server with websocket support, which Puma 6.1 shipped. I was trying to get ActionCable working on
Real-Time Rails: Implementing WebSockets in Rails 5 with Action Cable | Heroku