The Halfflex Blog

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Practical articles from engineers who ship production software every day — not theory, not hype.

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10 Hard Lessons from 12 Months of Next.js App Router in Production

We've shipped 8 production apps on Next.js App Router since its stable release. Here's what the docs don't tell you — server component pitfalls, caching bugs, and the patterns that actually scale.

Next.jsReactPerformance

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Architecture

SaaS Multi-tenancy: Choosing Between Schema-per-Tenant vs Row-Level Security

After building 6 multi-tenant SaaS products, we've experienced both approaches deeply. Here's a data-driven breakdown of when each architecture wins — and the migration nightmare to avoid.

React Native Performance: From 38fps to 60fps in a Production App

Our client's React Native app was dropping frames during list scrolling and animations. Here's the systematic debugging process and the 7 optimizations that solved it.

The 8 UI Changes That Increased Our Client's Conversion by 340%

The ShopFlow redesign wasn't magic — it was systematic. We ran 14 A/B tests over 90 days. Here are the 8 specific UI/UX changes that moved the conversion needle most.

Laravel API Design Best Practices We Enforce on Every Project

After building 20+ Laravel APIs, we've codified the patterns that prevent tech debt. API versioning, response structure, auth, rate limiting, and the testing approach that actually catches bugs.

When Should a Startup Actually Move to Kubernetes?

Kubernetes is powerful and complex. We've helped 5 startups migrate to K8s — and told 3 others not to. Here's the honest framework for knowing when you're ready.

DevOpsKubernetes