The TechHowAI Blog

How to Avoid Feature Flag Rot in 2025

A practical guide to managing feature flags without turning them into a mess.

Oct 21, 2026

OpenAPI Specs That Stay Honest: Generate Clients and Catch Drift

Use JSON tools to enforce OpenAPI specs and prevent drift in your API contracts.

Oct 14, 2026

Git Bisect for Production Regressions: Find Bad Commits Fast

Pinpoint the exact commit causing a production regression using Git bisect and a reliable test command.

Oct 13, 2026

Node API Database Pooling: PgBouncer vs App Pools and Idle Timeouts

Compare PgBouncer and app-level connection pooling in Node.js APIs to prevent pool exhaustion.

Oct 9, 2026

TypeScript Discriminated Unions for API Error Modeling

Use discriminated unions to enforce strict error handling in APIs and prevent UI misrepresentation of response types.

Oct 8, 2026

Environment Config Without Secret Leaks

A practical guide to secure environment configuration without exposing secrets.

Oct 7, 2026

DNS Debugging with dig: TTL, Propagation, and Record Types

Use dig to diagnose DNS problems, including TTL and record types.

Oct 6, 2026

Idempotent Workers with Redis Locks for Background Jobs

Use Redis locks and unique job keys to prevent background jobs from running twice.

Oct 5, 2026

Secure S3 File Access with Signed URLs

Use AWS S3 signed URLs to provide secure, temporary access to private files.

Oct 4, 2026

Developer9 min

Local-first AI with MLX on Apple Silicon: When to Use It

MLX enables local AI on Apple Silicon, but isn't ideal for all workloads.

Oct 3, 2026

SQLite WAL Mode for Side Projects That Might Grow

SQLite WAL mode is a simple way to manage growing side projects without complex setups.

Oct 2, 2026

HTTP Caching Headers Developers Actually Need

A practical guide to HTTP caching headers that work in real-world scenarios.

Oct 1, 2026

Zero Downtime SQL Schema Migrations with Expand/Contract

Use expand/contract and backfill strategies to migrate SQL schemas without locking tables.

Sep 29, 2026

Structured Logging with Correlation IDs: What to Log and What to Avoid

Log request IDs, timestamps, and error codes to trace issues across services without overloading logs.

Sep 28, 2026

Docker Multi-Stage Builds for Smaller Node Images

A concrete Dockerfile example to shrink Node.js images using multi-stage builds.

Sep 27, 2026

Reliable Webhook Delivery with Idempotency Keys

Implement idempotency keys to prevent duplicate webhook processing and ensure reliable delivery.

Sep 26, 2026

PostgreSQL EXPLAIN ANALYZE: Index vs Rewrite for Slow Queries

Analyze PostgreSQL query plans to choose between adding an index or rewriting a slow query.

Sep 25, 2026

Fixing Stale HTML in Next.js with Edge Caching

Prevent stale HTML in Next.js by adjusting cache keys and edge caching strategies.

Sep 21, 2026

How to Build a Free Tools Website (2026)

Lessons from building TechHowAI — 100+ free developer tools.

Aug 11, 2026

API Rate Limiting Guide (2026)

Implement API rate limiting that protects your infrastructure.

Aug 10, 2026

Kubernetes Basics for Developers (2026)

Kubernetes fundamentals every developer should know.

Aug 9, 2026

SQL11 min

MongoDB vs PostgreSQL: Which Database? (2026)

MongoDB vs PostgreSQL — decision guide for developers.

Aug 8, 2026

Business11 min

Odoo Development Introduction (2026)

Introduction to building Odoo ERP modules.

Aug 7, 2026

Email Authentication: SPF, DKIM, DMARC (2026)

SPF, DKIM, and DMARC explained for developers.

Aug 6, 2026

UUID vs ULID: Choosing Unique Identifiers (2026)

Pick the right unique ID format for your application.

Aug 5, 2026

Base64 Encoding Explained for Developers (2026)

Base64 encoding/decoding — practical guide with examples.

Aug 4, 2026

Cron Jobs Complete Guide (2026)

Master cron expressions for Linux and cloud schedulers.

Aug 3, 2026

PDF11 min

PDF Tools Workflow Guide (2026)

Complete PDF workflow for developers and office work.

Aug 2, 2026

OWASP Top 10 Web Security Guide (2026)

OWASP Top 10 explained with fixes developers can ship today.

Aug 1, 2026

TypeScript for JavaScript Developers (2026)

Adopt TypeScript without slowing down your team.

Jul 31, 2026

Redis Caching Patterns for Web Apps (2026)

Redis caching patterns that scale.

Jul 30, 2026

Nginx Reverse Proxy Guide (2026)

Nginx reverse proxy — SSL, load balancing, and caching.

Jul 29, 2026

CI/CD with GitHub Actions: Complete Guide (2026)

Build CI/CD pipelines with GitHub Actions workflows.

Jul 28, 2026

GraphQL vs REST: Which Should You Choose? (2026)

GraphQL vs REST — trade-offs, use cases, and decision framework.

Jul 27, 2026

OAuth 2.0 Explained for Developers (2026)

OAuth 2.0 demystified — flows, tokens, and best practices.

Jul 26, 2026

SQL8 min

SQL Joins Explained for Developers (2026)

Understand SQL joins once and for all.

Jul 25, 2026

Linux Commands Every Developer Needs (2026)

grep, awk, sed, ssh, systemd, and more — practical Linux for devs.

Jul 24, 2026

Django REST Framework Guide (2026)

Serializers, viewsets, authentication, and pagination with DRF.

Jul 23, 2026

React Hooks Complete Guide (2026)

Master React Hooks with practical examples.

Jul 22, 2026

Python for Developers: Practical Guide (2026)

Python patterns every developer should know in 2026.

Jul 21, 2026

SQL11 min

PostgreSQL Query Optimization Guide (2026)

Speed up PostgreSQL with indexes and query analysis.

Jul 20, 2026

Image11 min

Image Optimization for Web Performance (2026)

Optimize images for Core Web Vitals and faster page loads.

Jul 19, 2026

AI11 min

Prompt Engineering for Developers (2026)

Practical prompt patterns for ChatGPT, Claude, and Gemini.

Jul 18, 2026

SEO11 min

Technical SEO Checklist for Developers (2026)

Technical SEO essentials every developer should ship.

Jul 17, 2026

REST API Design Guide for Developers (2026)

Build REST APIs that developers love to integrate with.

Jul 16, 2026

Docker Compose for Beginners: Complete Guide (2026)

From zero to running multi-container apps with Docker Compose.

Jul 15, 2026

Developer2 min

JSON Formatting Best Practices for Developers (2026)

Practical JSON guide — validation, indentation, minification, and debugging.

Jul 14, 2026