The ProdFix Blog

Shadow traffic duplicates production requests for testing. Here's what it is and when to use it.

Graceful shutdown completes in-flight requests before stopping. Here's why it matters and how to implement it.

Connection pooling prevents database connection exhaustion in serverless environments.

Idempotent operations are safe to retry. Here's what idempotency means and how to implement it.

Eventual consistency enables distributed systems but creates bugs. Here's what it means in practice.

Backpressure prevents memory exhaustion in streaming systems. Here's what it is and how to handle it.

Tail latency (P99, P999) affects your slowest users. Here's what it means and how to measure it.

Cascading failures turn one service outage into a total system failure. Here's what they are and how to prevent them.

Retry storms overwhelm failing services with repeated requests. Here's what they are and how to prevent them.

Thundering herd happens when many clients hammer a resource simultaneously. Here's the prevention patterns.

AI tools love generating Supabase auth code. But they consistently miss session expiry, RLS misconfigurations, and redirect edge cases. Here's what to watch for.

AI generates plausible-looking Stripe webhook handlers that fail in production. Missing idempotency, wrong event types, and broken signature verification are the top culprits.

Most .cursorrules files are generic style guides. Here's how to write one that prevents the specific production bugs AI tools consistently generate.

The App Router has sharp edges that AI tools consistently stumble over. These 9 mistakes show up in production vibe-coded Next.js apps again and again.

MCP lets Claude Code read your live production errors. Here's the exact workflow that turns a 2-hour debugging session into a 10-minute fix.

Edge functions have a different runtime than Node.js. AI tools don't know the difference, leading to crashes that only happen in production.

Prisma is the default ORM for vibe coders. But AI-generated Prisma code has consistent blind spots that cause production crashes, slow queries, and data loss.

AI tools default to setTimeout and unhandled promises for background work. Here's the right pattern for vibe-coded apps that need reliable async processing.

Hydration errors are some of the hardest bugs in SSR React apps. AI tools generate them constantly. Here's why they happen and how to fix them.

Monorepos are popular in vibe-coded projects, but AI tools generate monorepo configs that break in CI/CD and production deployments. Here are the most common issues.

AI tools almost never add rate limiting. This is why vibe-coded APIs get scraped, abused, and generate surprise bills. Here's how to add it in 10 minutes.

Secret leaks are the most dangerous vibe coding mistake. AI tools generate code that exposes API keys to browsers, logs, and version control. Here's what to audit.

Real-time features built with AI-generated WebSocket code look great in demos but fail in production. Reconnection logic, auth, and scaling are the most common gaps.

AI tools generate tests enthusiastically, but most AI-written tests are useless. Here's how to tell the difference and what testing actually prevents production bugs.