Alright, so performance optimization for web apps – it’s a big deal, right? I’ve messed around with this stuff a bunch, and there’s a few key things that really make a difference.
Lazy loading is pretty sweet, especially if you’ve got a ton of images. Basically, you only load stuff when you need it. Makes the initial page load way quicker.
Code splitting’s another good trick. Instead of one massive JavaScript file, you break it up. Only load what you need for each part of your site.
Service workers are cool too, but they can be a pain to set up. Great for caching and offline stuff though.
Other things that help: minifying your code, using CDNs, and making sure your database queries aren’t a mess.
The main thing is to figure out where your bottlenecks are. Use tools like Lighthouse to spot issues.

What are you working on? Might be able to give you some more specific tips if you fill me in. Sometimes the solution depends on what kind of app you’re building, you know?