React Behind The Scenes: Virtual DOM, Reconciliation, Render Phase, Commit Phase & Fiber Explained.

A deep dive into React's internal rendering mechanics, covering how the Virtual DOM works, the Reconciliation and Diffing processes, the Render and Commit phases, and how the Fiber architecture introduced in React 16 enables pausable, prioritized, and interruptible rendering. Clarifies common misconceptions such as React comparing two Virtual DOM trees (not Virtual DOM vs Real DOM), and explains the full update cycle from state change to browser paint.