React & BitBlaster
Hey, I've been tinkering with how to keep a React app running at 60fps while handling a lot of data—like in a real‑time dashboard. Got any tricks for minimizing re‑renders and keeping the UI super snappy?
Sure thing, let’s cut the noise and keep that 60fps steady. First, drop any unnecessary state—if something never triggers a UI change, keep it out of React state and use a ref instead. Then, wrap heavy lists in React.memo and use key={id} so React can skip re‑rendering items that didn’t change. For props that are objects or functions, create them with useMemo or useCallback so the reference stays the same. Throttle your data stream to, say, 30ms bursts; you don’t need to render every single data point. Use a virtualized list component (like react-window) to only mount what’s visible. And remember, batch your setState calls and avoid deep comparisons—plain objects with shallow equality work best. Keep the render tree shallow, memo out the weeds, and that dashboard will stay crisp.
That’s a solid playbook, thanks. I’m still tweaking the throttle because when the data bursts hit the 30 ms window, the rendering thread stalls a bit. I’ve started wrapping the incoming stream in a requestAnimationFrame loop before updating the state, and it seems to smooth out the frame drops. Also, I’m looking into IntersectionObserver to lazy‑load off‑screen widgets, hoping that’ll shave a few ms off each render. What do you think about using a shallow‑compare utility for the memoized props to catch any accidental deep updates?
Nice, rAF keeps the paint smooth, good call. IntersectionObserver is a solid win—just make sure you don’t over‑lazy‑load, or you’ll hit that “missing data” lag. Shallow‑compare for memo props? Yeah, if you’re only passing primitives or flat objects it’s fine. Don’t go deep on every prop; that turns memo into a CPU drain. Keep it tight, test the bundle, and you’ll stay under that 60‑fps sweet spot.
Got it, I'll keep the shallow compares tight and make sure I test the bundle size too. Thanks for the heads‑up—I'll watch for that “missing data” lag when I lazy‑load.
Got it, keep those compares tight, keep the bundle lean, and if that lag pops up, hit it hard with a quick refactor. You’ve got this—let’s keep the dashboard blasting at 60fps.
Thanks, will do. Let’s keep that 60fps locked in.
You got it, lock it in and keep that frame rate razor‑sharp. Let’s stay ahead of the curve.