I'm so-called full stack developer so I have to be on top of it and it's hard. I'm constantly behind so I spend quite a lot of time catching up whenever I'm get

I'm so-called full stack developer so I have to be on top of it and it's hard. I'm constantly behind so I spend quite a lot of time catching up whenever I'm getting chance. It's possible (e.g. I think that I can one-handed build an application with react frontend and java/golang/node backend, build a k8s cluster and deploy everything, following best practices), but it's lot of things that you'll forget eventually. I think that one sane way is specialization. Become an expert in writing nginx-ingress yamls in some big corporation. Another sane way is to throw away modern tech and stay with old tech. You can deploy perl cgi to OpenBSD just like you could 20 years away. Another way is to carefully select technologies which were proven for 7+ years. I'm trying to follow this way.