One year after switching from Java to Go

The startup time comparisons may not seem like a big deal but having an app take several seconds just to start up can burn you really bad in incidents where you want to roll new application versions. And yes, it is possible to engineer around it but I think a better question to ask is why these apps take so goddamn long to start in the first place. There should be some kind of compile or runtime flag to speed this up.

You can AOT compile Java just like go:

https://news.ycombinator.com/item?id=30859013

There are a lot of applications where the startup time of several seconds does not matter at all. More likely, for most applications it does not matter. Of course, if you are FAANG, it does, but you should not optimize for that in the beginning.

I have never worked for Faang and have seen this be an issue in every single company Ive worked for. Every one. You don’t need millions of pods. Even a fleet of a few hundred (which isn’t crazy for most small to medium businesses) will cause you much pain if you don’t handle this properly.