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ИБИван Бухтияровdaodaily.hashnode.dev18h ago · 4 min read

A habit-tracker demo should make its storage boundary visible

Disclosure: This guide was prepared by an AI writing agent for the DaoDaily team. It is a product-affiliated technical note. The product example was checked against its public interface and implementa

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PPPayal Porwalcodeswithpayal.hashnode.devOct 1 · 19 min read

16. React useRef and useReducer Explained: Complete Beginner-Friendly Guide with Real-World Examples

If you are learning React Hooks, two important hooks you should understand after useState, useEffect, and useContext are: useRef() useReducer() Both hooks solve different problems. useRef() is mai

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Jjingwonbybyte.hashnode.devOct 1 · 8 min read

At 34, I Learned to Code From Scratch — Then Realized I Wasn't Starting Over

At 34, I Learned to Code From Scratch — Then Realized I Wasn't Starting Over I have a master's degree in Marketing from South Korea. In my old field, I knew what I was doing: researching customers, an

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TSTarun Sharma101beardo.hashnode.devSep 16 · 4 min read

Testing a component that uses WebSockets, without a real server

A component that talks to a REST API is easy to test. You mock the HTTP call, resolve it with fixture data, assert on the render. A component that talks to a WebSocket is a different animal, and most

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BKBOBBY KUMARthe-engineers-notebook.hashnode.devSep 12 · 9 min read

When Personalization Meets the Edge

A modern application might need to show different experiences to different users. The same URL could display developer-focused content for one user, business-focused content for another, or different

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TSTarun Sharma101beardo.hashnode.devSep 9 · 3 min read

Why does React call your component function twice in development?

If you have added a console.log at the top of a component in a fresh Create React App or Next.js project, you have probably noticed it fires twice on the first render. Nothing is broken. This is Stric

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BKBOBBY KUMARthe-engineers-notebook.hashnode.devSep 5 · 10 min read

Caching: It Isn't Just a Performance Problem

When an application gets slower, one of the first solutions we think about is - "Let’s cache it." And often, that’s the right answer. Instead of doing the same expensive work for every request, we can

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CIChiagoziem Ikeurulorbass111.hashnode.devSep 1 · 9 min read

Mastering Class Variance Authority (CVA) in React

This article explains what Class Variance Authority (CVA) is and how to use it with Tailwind CSS in React applications. Prerequisites: A basic understanding of React, JavaScript/TypeScript, and Tailwi

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AJazi janazijanhashnodedev.hashnode.devSep 1 · 2 min read

Building a Production-Ready Multi-Tenant ERP & POS SaaS Starter Kit with React 19 and Supabase

Building enterprise-grade SaaS systems from scratch takes weeks of repetitive architecture work: configuring multi-tenancy, securing database row-level security (RLS), setting up real-time inventory t

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BKBOBBY KUMARthe-engineers-notebook.hashnode.devAug 29 · 7 min read

The Journey of a Request in a Next.js Application

When we build a frontend feature, we often think about what happens after the page reaches the browser. We think about components. Page ├── Header ├── ProductList ├── ProductCard └── Footer But w

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Trending tags this week

A habit-tracker demo should make its storage boundary visible

16. React useRef and useReducer Explained: Complete Beginner-Friendly Guide with Real-World Examples

At 34, I Learned to Code From Scratch — Then Realized I Wasn't Starting Over

Testing a component that uses WebSockets, without a real server

When Personalization Meets the Edge

Why does React call your component function twice in development?

Caching: It Isn't Just a Performance Problem

Mastering Class Variance Authority (CVA) in React

Building a Production-Ready Multi-Tenant ERP & POS SaaS Starter Kit with React 19 and Supabase

The Journey of a Request in a Next.js Application