📰 Dev.to · Atlas Whoff
Articles from Dev.to · Atlas Whoff · 480 articles · Updated every 3 hours · View all reads
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Dev.to · Atlas Whoff
1w ago
Playwright vs Cypress: End-to-End Testing in 2025
The E2E Testing Decision End-to-end tests are expensive—they're slow, flaky, and require...
Dev.to · Atlas Whoff
1w ago
GitHub Copilot vs Cursor vs Claude Code: AI Coding Tools Compared
The AI Coding Tool Landscape Every developer has an AI coding tool opinion now. The tools...
Dev.to · Atlas Whoff
1w ago
The 12-Factor App in 2025: What Still Applies and What's Changed
The 12-Factor App Was Written in 2012 Heroku's original 12-factor methodology is still...
Dev.to · Atlas Whoff
1w ago
AI Agents vs Traditional Automation: When to Use Each
The Hype vs Reality AI agents are everywhere in 2025. But deploying an LLM for every...
Dev.to · Atlas Whoff
1w ago
Headless CMS Comparison: Contentful vs Sanity vs Strapi for Developers
Why Headless CMS? A headless CMS separates content management from presentation. Marketing...
Dev.to · Atlas Whoff
1w ago
TypeScript Mapped Types: Transform Types Without Repetition
The Repetition Problem // You have this type interface User { id: string; name:...
Dev.to · Atlas Whoff
1w ago
Resend vs SendGrid vs SES: Picking Your Transactional Email Provider
The Email Provider Decision Every SaaS needs transactional email: welcome emails, password...
Dev.to · Atlas Whoff
1w ago
Implementing Search: PostgreSQL Full-Text vs Algolia vs Meilisearch
Search Is Harder Than It Looks LIKE '%query%' works until: Your table has 100k rows (Seq...
Dev.to · Atlas Whoff
1w ago
CSS Container Queries: The Layout Tool We've Been Waiting For
The Problem With Media Queries Media queries respond to the viewport. But components don't...
Dev.to · Atlas Whoff
1w ago
Designing APIs for Developer Experience: What Makes SDKs a Joy to Use
What Makes a Developer API Good? Stipe's API is consistently cited as one of the best in...
Dev.to · Atlas Whoff
1w ago
Structured Concurrency in JavaScript: Beyond Promise.all
The Problem with Unstructured Async Code JavaScript async code has a scope problem. You...
Dev.to · Atlas Whoff
1w ago
GraphQL Subscriptions: Real-Time Data With Type Safety
When GraphQL Subscriptions Make Sense GraphQL has three operation types: query — fetch...
Dev.to · Atlas Whoff
1w ago
npm Package Publishing: Versioning, Scopes, and Automation
When to Publish to npm Publish to npm when: Multiple projects need the same utility...
Dev.to · Atlas Whoff
1w ago
LLM Context Windows: Managing Tokens in Production AI Apps
The Token Budget Problem Claude claude-sonnet-4-6 has a 200k token context window. GPT-4o...
Dev.to · Atlas Whoff
1w ago
PgBouncer: Database Connection Pooling That Actually Scales
Why Your Database Runs Out of Connections PostgreSQL handles each connection with a...
Dev.to · Atlas Whoff
1w ago
OAuth 2.0 Flows Demystified: Authorization Code, PKCE, and Client Credentials
OAuth 2.0 Is Not Authentication OAuth 2.0 is an authorization framework. It answers: "Can...
Dev.to · Atlas Whoff
1w ago
React Email: Building Transactional Emails That Actually Render
Why Email HTML Is Different Emails use 1998-era HTML. No CSS Grid. No Flexbox. No external...
Dev.to · Atlas Whoff
1w ago
Vector Databases Explained: Embeddings, Similarity Search, and When to Use Them
What Is a Vector Database? A regular database stores text and numbers. You search by exact...
Dev.to · Atlas Whoff
1w ago
Mock Service Worker: Test Your UI Without Mocking fetch
The Problem With Mocking fetch // Traditional approach — fragile jest.spyOn(global,...
Dev.to · Atlas Whoff
1w ago
Vercel vs AWS: When the Platform Tax Is Worth It
The Platform Tax Vercel charges more per compute-hour than AWS Lambda. This is not a...
Dev.to · Atlas Whoff
1w ago
Microservices Communication: REST, gRPC, and Message Queues
The Communication Problem in Microservices When you split a monolith into services, every...
Dev.to · Atlas Whoff
1w ago
Next.js Middleware Deep Dive: A/B Testing and Tenant Routing
What Middleware Is For Next.js middleware runs before a request reaches your route...
Dev.to · Atlas Whoff
1w ago
tRPC vs REST vs GraphQL: Choosing the Right API Layer in 2025
The API Layer Decision Every full-stack app needs a way for the frontend to talk to the...
Dev.to · Atlas Whoff
1w ago
Building Multi-Tenant SaaS: Data Isolation Strategies Compared
The Fundamental Multi-Tenancy Question When you build a SaaS, every customer is a tenant....
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