Next.js: Performance Optimizations and Clean-up Day

Today we're diving into some exciting performance improvements to Next.js, including smarter argument handling for server actions and significant Turbopack persistence optimizations. The team merged 4 pull requests focused on efficiency gains, with standout contributions from Hendrik Liebau on server action optimizations and Tobias Koppers on Turbopack performance enhancements.

Duration: PT4M3S

Episode overview

This episode is a short developer briefing from Next.js.

It explains recent repository work in plain language.

  • Show: Next.js
  • Published: 2026-02-08T11:10:16Z
  • Audio duration: PT4M3S

Transcript excerpt

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Hey there, amazing developers! Welcome back to another episode of the Next.js podcast. I'm so glad you're here with me today - grab your favorite beverage because we've got some really cool performance wins to talk about.

So February 8th was one of those satisfying days in open source where everything just clicked into place. You know those days where the team is firing on all cylinders, merging meaningful improvements left and right? That's exactly what we saw yesterday with 4 solid pull requests making their way into the codebase.

Let me start with what I think is the most developer-friendly improvement of the day. Hendrik Liebau dropped this fantastic optimization for server actions - and honestly, this is the kind of behind-the-scenes magic that makes me excited about framework development. So here's the story: you know how Next.js was…

But here's where it gets really clever - instead of just skipping unused arguments, the optimization now trims trailing unused arguments from the array entirely. That means instead of sending undefined values across the network, we're sending literally nothing for those unused parameters. It's one of those changes…

Now, speaking of performance,…

The…

Nearby episodes from Next.js

  1. Better Documentation & Smoother Scrolling
  2. Turbopack Gets Smart, HMR Gets Stable
  3. Turbopack Gets Major Polish & React Updates
  4. React Upgrade & Memory Leak Fixes
  5. The Great Infrastructure Upgrade
  6. Instant Navigation and Smart Caching Get Major Upgrades
  7. Instant Navigation Revolution - New Testing APIs and Performance Breakthroughs
  8. The Server Function Logging Dance