🔗 Chasing a Phoenix LiveView long poll reload issue

The issue with the reload loop in a Phoenix 1.7 LiveView app stemmed from the requirement for long poll distribution. Users faced a frustrating loop where pages reloaded every seven seconds, showing a "Something went wrong! Hang in there while we get back on track" message. Despite staging environments working fine, the production setup running on AWS ECS behind Cloudflare illustrated a stark contrast due to server distribution.

Debugging revealed a critical difference where production returned a 410 status code related to session management—highlighting the necessity for all Phoenix nodes to connect for long poll fallback to function. Dan Schultzer meticulously details how enabling distribution resolved this issue and emphasizes the importance of this setup for ensuring proper PubSub messaging across all application nodes. A must-read for developers facing similar challenges in Phoenix apps.