Debugging recomposition in Compose

A look into debugging a performance issue in Jetsnack and how to fix it in Compose. Learn why deferring state reads by using a lambda means composition can be skipped.

Key points

  • The three phases of Compose are composition, layout, and draw.
  • Compose can skip a phase if nothing has changed. Sometimes Compose will entirely skip composition to optimize performance.
  • You can use a lambda modifier can skip composition.
  • Skipping recomposition can help reduce jank during scrolling.
  • The Layout Inspector in Android Studio is a good tool to help you debug recomposition issues.


Parent collections

This series of videos introduces various Compose APIs, quickly showing you what's available and how to use them.

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