AI BriefingCDN Caching and Deployment Optimization for Immutable Static Assets
Key point
Vercel improved cache efficiency and deployment speed by automatically reusing immutable static assets across deployments.
Details
Vercel has released a feature that automatically reuses immutable static assets (content-addressed assets) across deployments. Through Framework-defined infrastructure, it automatically manages hash collisions, file lifecycle, and efficient routing, working without any separate configuration.
With this optimization, for frameworks using Query Parameter-based Skew Protection:
- 17% reduction in CDN requests
- 24% reduction in bytes transferred
- 30% improvement in average deployment speed
- 60%+ reduction in global TTFB
It is enabled by default in Next.js 16.3 preview versions and above, with support for additional frameworks such as Nitro planned soon. Framework developers can refer to the immutable static files section of the Build Output API to implement this in their own toolchains.
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