> They seem to invest a lot in JavaScript which is not what I’d call a performant language A lot of them have huge amounts of code that runs in browsers, so th

> They seem to invest a lot in JavaScript which is not what I’d call a performant language A lot of them have huge amounts of code that runs in browsers, so they essentially have to invest in JS whether they like it or not. > All that being said I’ve never heard someone say we used X language and it scaled remarkably without issues. Sometimes you have to go by what people don't say. Humans tend to talk most about problems or surprises. The former are actionable and the latter are more interesting to talk about because of their rarity. That means when things work well as expected, you get silence. I remember when people constantly talked about how Java was too slow. Then there was a period of time where people talked a lot about how Java was fast enough because that was an interesting change. Now people don't talk about Java performance much at all, which is a good sign (but easy to overlook), that Java performance is now consistently reliably good for most users.