Next.js Dynamic Routes: Pages on Demand
Think of dynamic routes as a page template. You create one file like `[slug].js` to generate unlimited unique pages for things like blog posts or products. The footgun is forgetting to handle non-existent slugs, which can crash your app.
Dynamic routes are Next.js's way of creating pages on demand, like a mail merge for your UI. Instead of a file for every blog post, you create one template, like `/posts/[slug].js`, to render countless pages. This is essential for product catalogs, user profiles, or docs. The main footgun is mishandling unknown slugs; without a proper fallback or 404 page, requests for non-existent content will result in errors instead of a clean 'not found' experience.
Read the original → nextjs.org
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