Programmers: Before you turn 40, get a plan B (2009)
I&#x27;m not sure I&#x27;m buying that. The JVM ? Still rocking it 20 years after. Memory allocations pattern ? Still there. The network stack ? Well, doesn&#x27;t seem to have changed a lot.<p>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&#x27;ve known older devs for which I have the utmost respect because I felt like they can just debug the shit out of anything happening on a computer, with tools I don&#x27;t even know of but have been there for decades.<p>And here I am, needing to google how use tcpdump or jstack, and scrambling to correctly understand the result.<p>I agree that new tech is always stacking, but I feel like it&#x27;s pretty damn hard to catch up on the in fact still very relevant and important old one, because it&#x27;s no longer taught, no longer a meetup topic, no longer hype. And the new one is really easy to learn when you realize that it&#x27;s 90% rehashing of old concepts (Observables are all the hype in javascript ? Well, great, I&#x27;ve learnt that pattern 15 years ago...)<p>Admittedly, I have no clue if the management realizes that !<p>But the impact of this knowledge, from what I observed, is really huge on productivity, and is especially a boon when the production is on fire or generally when tricky stuff happens.<p>So, respect for the elders, and please come and teach in conferences and meetups, we need more wisdom and less hype !