Next.js 15: New Features for High-Performance Development
Next.js 15 introduces several high-impact features that help web apps load instantly and perform efficiently under load. The most significant architectural update is Partial Pre-Rendering (PPR). PPR allows developers to blend static and dynamic rendering within the same webpage. This means layouts and static components, such as descriptions or navigation headers, are pre-rendered and cached at the edge, while dynamic components like personalized dashboards or live database components load asynchronously using React Suspense.
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Additionally, Next.js 15 updates the default caching behavior of the framework. Previously, fetch requests were cached by default. In Next.js 15, fetch requests default to 'no-store' or dynamic execution, giving developers more explicit control over data freshness. When building complex bespoke setups, matching this default caching structure with clear database queries is essential. You can discover how we tailor these options in our custom software development solutions page.
By optimizing these caching mechanisms and utilizing PPR, Next.js 15 applications experience shorter Time to First Byte (TTFB) and improved Interaction to Next Paint (INP) scores.
Frequently Asked Questions (FAQ)
What is Partial Pre-rendering (PPR) in Next.js 15?
PPR allows static page shells to be served immediately from cache while dynamic elements are streamed in asynchronously, offering the speed of SSG with the flexibility of SSR.
How has fetch caching changed in Next.js 15?
Next.js 15 disables default caching of fetch requests. All fetch calls now default to 'no-store' unless explicitly set to 'force-cache'.
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