Editor's pickNext.jsTroubleshootingDeploymentDNS
Why Your Next.js Website Works Locally but Fails After Deployment
Troubleshoot Next.js production failures with checks for environment variables, builds, DNS, TLS, caching, and deployment logs.
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Editor's pickNext.jsTroubleshooting
Why Your Next.js Website Works Locally but Fails After Deployment
Troubleshoot Next.js production failures by checking environment variables, builds, DNS, TLS, caching, and hosting logs with a practical workflow.
Next.jsReact
How to Lazy Load Components in Next.js
Learn to lazy load Next.js components with dynamic imports, loading fallbacks, click-to-load behavior, and guidance on SSR and bundle tradeoffs.
Next.jsJavaScript
How to Find Unused JavaScript and Reduce Your Bundle Size
Find unused JavaScript with Next.js bundle analysis and Chrome DevTools, then use dynamic imports, tree shaking, and smaller client boundaries to reduce bundle size.
Next.jsVitest
How to Test Next.js API Routes with Vitest
Set up Vitest for Next.js Route Handlers, mock service dependencies, and test successful requests, invalid input, and server errors without a browser.
CORSNext.js
How to Fix CORS Errors in a Next.js and Express App
Fix CORS errors between Next.js and Express with exact origin settings, preflight handling, allowed headers, and credentialed request examples.