my code Exaple:

const OptimizedImage = ({ imageUrl, ...restProps }) => {
 useEffect(() => {
 (async () => {
 await FastImage.preload([
 {
 uri: imageUrl
 },
 ]);
 })();
 }, []);
 return (
 <FastImage
 source={{ uri: optimizedImageUrl, priority: FastImage.priority.high }}
 {...restProps}
 />)

and My question is
Supposed User open app first time preload function will run on componentmout and render image will run.
What happened if user kill this app and reopen it will Preload function check the in cache the url already exist or it will fetch new image and overwrite previous cache?