performanceweb vitalsjavascript
Your Server Responds in 200ms. Your Users Wait 6 Seconds. Here's Why.
SPAs moved rendering to the client. Here's what that costs on real mobile hardware, which metrics actually matter, and how to fix the bottleneck.
Engineering Blog
Deep dives, system design, and lessons from building commerce infrastructure at scale. By the engineers at devx.
cloud migrationdeduplicationobject storage
Building a Crash-Proof Migration Pipeline for 35 TB
How one engineer moved 5.6 million files across cloud providers, eliminated 60% duplicate storage, and made every CDN URL unguessable with UUID-based path transformation.
nextjsarchitectureapp router
Your Next.js Repo is a Mess. Here's How to Fix It.
Next.js leaves internal structure entirely up to you. Here's the folder guide I wish existed: from solo project to multi-team monorepo, with reasons.
pimcoredata managementproduct information management
Why We Use Pimcore for Complex Data Architectures
Most enterprise systems scatter product data, assets, and content across five different tools. Here is how Pimcore collapses that into one governed platform.
domain knowledgeai engineeringsystem design
The Programmer's New Moat: Understanding the Business
AI writes working code in minutes. It also gets the architecture wrong. I share two real enterprise projects where business knowledge caught what AI missed.
medusaecommerceadmin dashboard
Stop Building Ecommerce Admins From Scratch
Every ecommerce team wastes weeks rebuilding the same admin primitives. Medusa Admin gives you all of them on day one — open source, responsive, yours to own.
shopifypricingai
How a Frustrating Night Shift Led Me to Build pricex
I was manually updating prices across 10 Shopify markets every week. One bad night pushed me to build something better.
analyticsnextjstypescript
Stop Scattering Analytics Across Your Codebase
Our analytics code was duplicated across 15 files, inconsistent across 6 providers, and impossible to debug. Here's the dispatch pattern that lets new devs ship events in 15 minutes.
aws lambdadomain driven designserverless
Domain-Driven Lambda Architecture That Scales
How we restructured a growing Lambda codebase from flat files into a domain-driven architecture with handler, controller, service layers, Zod validation, and auto-generated scaffolding.
monorepoturborepodeveloper experience
Monorepos: The Architecture That Changes How Teams Ship Software
A version mismatch in a shared auth library caused a 3-hour production incident. Here's the monorepo architecture (workspaces, Turborepo task graphs, remote caching) that makes that class of problem impossible.
postgresqlid generationbackend
How We Built a Snowflake-Style ID Generator in PostgreSQL
We replaced UUID with a custom 64-bit time-ordered ID generator in PostgreSQL for our ecommerce platform. Here's the SQL and the trade-offs.
feature flagsdeploymentcontinuous delivery
Feature Flags: Deploying Code Safely in Production
Learn how feature flags let you ship code to production without exposing it to users — enabling safer rollouts, instant rollbacks, and A/B testing.
ai securitydata privacyllm security
Your AI Tools Are Leaking Your Data
A friend's team pasted order data into ChatGPT and leaked it. Data sent to AI tools is sensitive. Here is what engineering teams should actually do about it.
react nativeclaude codeclaude md
React Native + AI: The Context Layer Most Developers Are Missing
AI's accuracy gap in React Native is real and structural. You can't prompt your way past it. Write CLAUDE.md before you write code — that context layer compensates.
build vs buyecommerceshopify
Build vs Buy: Replacing a $300/Month Reviews Tool
A D2C skincare brand outgrew their reviews SaaS. We built a custom Lambda + PostgreSQL replacement in one week: 80% cheaper, sub-100ms responses, fully owned.
redis cachingcache invalidatione commerce api
How We Cut API Response Time by 10x
Our API stitched data from Shopify and Strapi on every request. During sales, it buckled. Here is how we built a pre-assembled cache that serves full responses in under 100ms.
kubernetesdockerdevops
MicroVMs: A New Paradigm in Virtualization Technology
MicroVMs combine the speed of containers with the strong isolation of VMs, offering lightweight, secure, and efficient compute for modern cloud-native workloads.
ragsemantic chunkingembeddings
Stop Splitting Blindly: How Semantic Chunking Fixed Our RAG Pipeline
Character-based chunking destroyed our policy retrieval accuracy. Section-aware semantic chunking brought it back. Here is exactly how we built it.
claude codecompound engineeringshopify
I Grew Up With AI. Then I Found Compound Engineering.
I started coding with AI from day one. Two years later, I realized I was doing it wrong. Here's the framework I built to fix it.
react nativeexpoperformance
Expo vs Bare React Native: Performance Trade-offs
Choosing between Expo and Bare React Native? We compare cold start times, bundle sizes, native module flexibility, and developer productivity.
pimcoremaster data managemententerprise data
Your Data Is Everywhere. Your Answers Are Nowhere.
Enterprises lose nearly 25% of every workday to searching for scattered data. We break down how Pimcore brings products, assets, and documents under one roof.
aicontext engineeringllms
Models Generate Answers. Context Creates Intelligence.
Why the intelligence of modern AI systems comes less from the model itself and more from how we design and structure the context around it.
MicrofrontendWebpackModule Federation
Demystifying Microfrontend Architecture: Everything You Need to Know
One giant frontend app. Multiple teams. Constant merge conflicts. Sound familiar? This complete guide to Micro Frontend architecture covers the what, why, how, and when-not-to — with code examples, comparison tables, and an honest take on whether your e-commerce app needs one.
ai engineeringcrud apimental model
The Todo App Is Dead. Long Live the Todo App.
The todo app taught every developer CRUD, REST, and state management. That mental model is now obsolete. Here is what replaced it.
claude codetoken analysisai internals
I Analyzed 165.9 Million Tokens to Understand How Claude Code Actually Works
A deep dive into Claude Code's internal architecture - real JSONL session data, 165.9M tokens, multi-model routing, and why 97% of all tokens are cache reads.
webglglslthree js
One Engineer. A Full AI Engineering Team.
I built a 3D diamond ring configurator — 139,968 variants, physically accurate ray bouncing, real chromatic dispersion — using Claude Code, Manus, and ChatGPT as my engineering team.
claude codeai developer toolssubagents
A Mental Model for Claude Code: Skills, Subagents, and Plugins
How a 150-person engineering shop went from AI tool fragmentation to a shared mental model for Claude Code: skills, subagents, and what's next.
androidai toolskotlin
Horses for Courses: Why Tool Selection Beats Tool Mastery
Stop looking for the 'best' AI coding assistant. Strategic tool switching saved us 5 weeks on a full-stack 3D platform.
EngineeringCulturedevx
Hello, devx Engineering Blog
Introducing the devx Engineering Blog - a space where we document the real problems we solve, the systems we build, and the lessons we learn along the way.