[radanskoric]

Have you used it over the last few years? It has it been rapidly improving, mainly because Shopify put a team full time on it. It doesn’t take a lot of people to optimize a VM/interpreter it just has to be the right people.

And the question is always “fast enough for what?” Different languages are more suitable for different types of projects. I wouldn’t code a rendering engine in Ruby but for web apps it’s amazing.

[dlisboa]

Yes, every web app I’ve worked on the past ~18 years has been with Rails. I’ve seen it all except an efficient app. Sure, Ruby and Rails never bankrupted these companies but they’d all have been better off with something else. Certain cloud bills would’ve been much smaller for sure.

Those optimizations to the VM are just very workload specific and become less relevant today when you’re using containers and fractional CPU/mem. It also doesn’t take much for a dev to write the wrong code and make them irrelevant again. Even if you get everything right you’re leaving so much performance on the table it feels like crumbs.

For small web apps Rails is fine though. I just never worked on one. The issue is perhaps no one threw the code away when it got big.

[radanskoric]

Can you explain why you say they would be better off? What else would be a better choice and why?