# Performance — Next.js

Source: https://www.geekswithgeeks.com/en/nextjs/nextjs-20

> Use Performance as part of Next.js.

## The essential idea

**Performance** is a practical part of Next.js. Start with the problem, then identify the input, transformation, and expected result.

## See the learning path

This topic is one step from source code to a useful checked result.

![Learning path for Next.js.](assets/figures/nextjs/nextjs-learning-map.svg) — Figure 8.1 — Keep the full path visible.

## Common pitfall

Do not learn **Performance** by copying. Use a small experiment and feedback to check your explanation.

Quick check

**Quiz:** What is good practice for Performance?

- [x] Run one small example.
- [ ] Memorize without testing.
- [ ] Ignore feedback.

*Answer:* Run one small example.. Focused experiments reveal cause and effect.