Next.js: Turbopack Performance and Cache Improvements
The Next.js team merged 13 pull requests focused on Turbopack performance optimizations, cache system enhancements, and developer experience improvements. Key changes include unified cell storage, configurable cache timeouts, and stronger RSC cache-busting parameters.
Duration: PT1M59S
Episode overview
This episode is a short developer briefing from Next.js.
It explains recent repository work in plain language.
- Show: Next.js
- Published: 2026-04-21T00:00:00Z
- Audio duration: PT1M59S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning. This is your Next.js development briefing for April 21st, 2026.
Luke Sandberg merged a major Turbopack optimization that unifies cell storage and introduces a new eviction policy framework. The change replaces the previous serialization parameter with more precise persistence controls and consolidates memory storage to reduce overhead. This sets the foundation for intelligent…
Hendrik Liebau made the 'use cache' fill timeout configurable through a new experimental.useCacheTimeout config option. Applications can now adjust timeouts for slower backends or faster iteration cycles, with the default set to 90% of staticPageGenerationTimeout.
Zack Tanner strengthened the _rsc cache-busting parameter generation using more robust digest algorithms. This reduces the likelihood of cache collisions between different RSC request variants and improves request validation across client and server codepaths.
Luke Sandberg also implemented persistent last_successful_parse functionality in Turbopack, replacing memory-intensive AST caching with lightweight byte storage. This improves memory usage and ensures syntax error fallbacks survive server restarts.
Additional merges include pnpm…
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