#frontend

Articles tagged with #frontend

My PostgreSQL query went from 57ms to 1.4ms on a 1 million + row table. I didn't change the query. Here's what I did.
I was debugging a slow query on a users table with 1 million rows. EXPLAIN ANALYZE showed 57ms. I ran one SQL statement — didn't touch the query, didn't change the schema logic — and it dropped to 1.4
Jun 13, 202610 min read2.5K
Understanding Value vs. Reference in JavaScript: Differences Between Primitives and Objects
Have you ever wondered why modifying an array inside a function affects the original array, but modifying a number does not? The reason lies in how JavaScript handles values and references in memory.
Jan 29, 20255 min read558
Shallow vs. Deep Comparison in JavaScript: Unlocking React’s Performance Secrets
Imagine this: You're working on a React app, tweaking some state, and expecting a re-render, but nothing happens. You check everything—yet the component doesn’t re-render, even though you’re certain y
Jan 28, 20255 min read969