[kossTKR]

This sounds weird to me. What kind of scale / traffic did you have? Must be incredible read write heavy with millions of users?

I'm saying this because i myself have, and lots i know, have launched production sites with 100s of thousands of users on ready-made stacks like, Laravel, Rails, Flask (Php, Ruby, Python). But it's my impression that these fall short on millions of users and enormous concurrent traffic, but then you're already at huge evaluation, years into your project, or have 200+ positions, ie. you've already refactored your project multiple times.

[kyruzic]

That's why you shouldn't use slow backend technologies in the first place because you get to the point where you need preformance and it's impossible because your limited by extremely slow runtime you chose initially because it was flashy (not even easier to developer for) when you could have just chosen something better from the start.

Simple crud apps can get by fine with those technologies, but in the future I'd still never use it because you're leaving huge amounts of performance gains on the table for virtually no benefit. I don't buy the argument that javascript is just easier to develop for because it's simply not. The js ecosystem is a disaster.

[bcaxis]

Making stuff faster is relatively straightforward engineering. Optimisation is a favored past time of many engineers.

Getting stuff that people value enough to pay for, to make money, is the hard part.

Any friction you put into the value creation process because "optimizing for future problems" is just doing it wrong.

[kossTKR]

What kind of application are you talking about? I agree to a degree but we haven't run into performance issues with say 100k users, what traffic did you handle, what was the business case?

Again sounds like you are running some complex math heavy operation like say a weather service, national taxi service with lots of pathfinding, a global gaming platform etc?

Curious to know what exactly you are talking about here? Because normally you just outsource the "heavy stuff" to some remote API, service, etc. you can write in a hyper efficient language anyway.