Frontend Performance – Tips and Tricks
May 8, 2014
Angular Signals have transformed how we handle reactivity, offering fine-grained updates without the overhead of Zone.js. One of the most powerful features in the Signals API is computed signals, which enable derived state calculations efficiently. This post will explore how computed signals work, how they optimize performance, and best practices for memoization.
What Are Computed Signals?
A computed signal is a derived value that updates automatically when its dependencies change. Unlike normal signals (signal), computed values do not hold their own state but instead recompute when necessary.
Basic Example of a Computed Signal
Here, totalPrice is not explicitly updated—it automatically recomputes when price or tax changes.
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