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Except most companies won't attract the same top-tier Ruby/Rails talent. For example, it looks like 1/3 of the current Rails Core Team work at Shopify, includin

• JohnBooty 4y ago
  I may be misunderstanding you, but can you elaborate on why you believe you need "top-tier" Ruby/Rails talent to run a performant Rails application? In my experience, you need no more than mid-level talent. You need a certain % of people who are strong at working with databases to ensure good (normalized, indexed, etc) database design. You also need a certain level of organizational will to avoid letting a Rails monolith get absolutely out of control, but this is less "a need for top-level talent" and more "just stick to boring old Ruby/Rails best practices." Those are, of course, things you need when working with any stack. I don't find them to be Ruby/Rails specific.
• byroot 4y ago
  Rails Core team member working at Shopify here. You seem to be misinterpreting what we’re doing at Shopify. We pretty much never work on the product or anything like that, and we don’t go around the app chasing perf issues either. At best we work on the infra or dev tools to encourage or enforce better patterns, or sometimes in some kind of support capacity for teams having Ruby or Rails specific issues, but Shopify would do fine without us. We’re mostly here to ensure Rails and the Ruby ecosystem Shopify heavily depends on is maintained and healthy. Now maybe you need to tier talent to scale a Rails infra (I don’t think so), but Shopify’s presence in the Rails or Ruby core teams is no indication of that.