Rendering a Million Rows: The Ultimate Frontend Performance Guide — Virtualization, Streaming, SSR & Beyond

Rendering a Million Rows: The Ultimate Frontend Performance Guide — Virtualization, Streaming, SSR & Beyond You've got a million rows. Your product manager wants them all accessible in the UI. The designer mocked up a beautiful infinite-scrolling table. And your browser just burst into flames. Sound familiar? Rendering massive datasets on the frontend is one of those problems that seems simple until you actually try it. Then you discover that the DOM is not your friend when you're asking it to manage a million nodes. This guide covers every major technique for handling large datasets on the frontend — from the classics (pagination) to the advanced (canvas rendering, web workers, streaming SSR). We'll look at real code, real tradeoffs, and how companies like Google, Figma, and Bloomberg actually solve this problem. Let's get into it. The Problem: Why Naive Rendering Kills the Browser Let's start with the obvious approach — just render everything: function NaiveTable ({ rows }) { return