Introduction
The cache() function in React 19 is designed to improve performance in React Server Components by preventing unnecessary duplicate work.
What It Does

Remembers Results: It wraps around a function and remembers what that function returne...

Tiger's Place

React 19 introduces the cache() function to enhance performance in React Server Components by caching function results and sharing data to prevent unnecessary duplicate work. This function is designed to be used server-side, with memoized functions defined outside components. Key rules include ensuring same reference for objects and resetting the cache with each server request. Common mistakes involve improper placement of memoized functions and mismanagement of cache keys.

React 19's cache() Function

Yea let’s make it even more overengineered, yea, cool, love it.
Nope, actually we’ve abandoned Next.js and server-side components for good 😉

dayum, and I thought react 16 was bloat
good thing I left it

Initially when I read this I thought it would have been handy to have cache be a goto for context/memo on the client side, but this is RSC only. So not useful for React Native.