The ProdFix Blog

Production guides for solo founders, vibe coders, and indie hackers. Ship faster. Break less.

PRE-LAUNCH CHECKLIST ✓ Error monitoring ✓ Alerts configured ✓ Performance tracking → Security scan MCP setup Rate limiting PROGRESS 4 / 6 items completed ⚠ NEXT UP Run security scan CSP + XSS audit Start scan →
Next.js
Next.js Production Deployment Checklist 2025
The complete pre-deployment checklist for Next.js apps in 2025. Covers performance, security, monitoring, and edge cases.
2025-04-18 · 6 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
Next.js
Next.js Middleware Production Issues and How to Fix Them
Next.js middleware runs on every request. Here's what breaks in production and how to debug it.
2025-04-18 · 5 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
Next.js
Next.js Image Optimization: The Complete Production Guide
Next/image is powerful but misconfigured it slows you down. Here's the complete optimization guide for production.
2025-04-19 · 6 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
Next.js
Next.js API Routes Best Practices for Production
API routes are where most Next.js production bugs hide. These best practices prevent the most common failures.
2025-04-19 · 6 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
Next.js
Next.js ISR in Production: Common Bugs and Solutions
Incremental Static Regeneration sounds simple but has subtle production behaviors. Here's what actually breaks.
2025-04-20 · 5 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
Next.js
Next.js Edge Runtime Limitations: What You Can't Do
Edge runtime is fast but limited. Here's what breaks when you deploy edge functions and how to work around limitations.
2025-04-20 · 5 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
Next.js
Next.js Internationalization Bugs That Hit in Production
i18n in Next.js introduces routing and rendering bugs that only appear with real user data. Here's how to catch them.
2025-04-21 · 5 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
Next.js
Vercel Deployment Errors: The Complete Troubleshooting Guide
Vercel deployments fail in specific ways. Here's the complete guide to diagnosing and fixing every common Vercel error.
2025-04-21 · 6 min read
⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
Next.js
Next.js Auth in Production: Patterns That Actually Work
Authentication in Next.js has more edge cases than you think. Here's the production-tested pattern.
2025-04-22 · 6 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
Next.js
Next.js Database Connection Pooling: Prevent the Most Common Production Crash
Serverless Next.js functions exhaust database connections. Here's how connection pooling saves you.
2025-04-22 · 5 min read
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