May 2025
Intermediate to advanced
270 pages
6h 55m
English
The idea that “Rails does not scale” is, unfortunately, quite common. A couple of months ago, while talking with the founder of a startup about this book, he told me, “The only thing I have heard about Rails is that it doesn’t scale!” That this idea is around obviously does not make anybody happy in the Rails (and by extension, Ruby) community. But is it a fair assessment?
In short, no, it’s not a fair assessment. Benchmarks[1] show that Rails does basically the same as similar technologies like Django (Python) or Laravel (PHP). Rails does scale. In truth, Rails is a battle-tested technology that has proven itself in enabling the growth of companies with planetary-scale needs, like Shopify, GitHub, ...
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