[ JOURNAL.01 // INSIGHTS ]

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Aug 2, 2025

Local State vs Global State in React & Next.js β€” When to Use What (and How to Avoid Unnecessary Re-renders)

State management is one of the most important decisions in React and Next.js applications. Choosing between local and global state at the right time can improve performance, reduce bugs, and prevent unnecessary re-renders. This guide explains when to use local state, when to use global state, and practical techniques to optimize rendering in modern React and Next.js apps.

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