I think one of Rails' biggest strengths is:

> In fact, GitHub, Shopify, and Basecamp, as well as plenty of other companies and applications, have been running the pre-release version of Rails 6 for months and months in production.

Test suites are nice and all but nothing beats having tons of real world production workloads thrown at something to really test it and iron out a good developer API. There's just a massive amount of confidence you have that you won't be the one having to pioneer some weird edge case bug.

Can someone list at least 1 other popular web framework that has multiple individual sites pushing billions of page views through it before it hits a stable release?