I'm not sure I'm buying that. The JVM ? Still rocking it 20 years after. Memory allocations pattern ? Still there. The network stack ? Well, doesn't seem to have changed a lot. The older guys, they seem like they had the time to correctly learn the unix network tools, the jvm debugging ones, the memory inspection ones. I've known older devs for which I have the utmost respect because I felt like they can just debug t…
Yeah, you hear all these horror stories about how developers have a "shelf life." In the meantime, though, every single older developer I've met has been extremely knowledgeable and frankly much better at the craft than myself. Look at any hobby -- say, guitar playing. The difference between someone who's been doing it for 4 years and someone who's been doing it 20 years is ridiculous. They're so much better. I feel…
The way to get past this is to make sure you develop skills that are exotic and high-end and hard to find so you can't easily be replaced by a cheaper college grad.