React Native-一种无需缓存就可以非常快速地加载图像的更好方法

I am using FastImage for caching image and it loads image very fast after caching data as expected. But my server is generating new uri (s3 presigned url) each time for same image.So, FastImage is considering it as new image and tries to download everytime which affects my app performance.My question is, Is there any optimistic way to render images fast as possible without caching it? 解决方案 If you have chance to modify the server side application, you can create Authorization headers instead of creating presigned urls.This function should help.import aws4 from 'aws4';export function getURIWithSignedHeaders(imagePath) { if(!imagePath){ return null; } const expires = 86400; // 24 hours const host = `${process.env.YOUR_S3_BUCKET_NAME}.s3.${process.env.YOUR_S3_REGION}.amazonaws.com`; // imagePath should be something like images/3_profileImage.jpg const path = `/${imagePath}?X-Amz-Expires=${expires}`; const opts = { host, path, headers: { 'Content-Type': 'image/jpeg' } }; const { headers } = aws4.sign(opts, {accessKeyId: process.env.YORU_ACCESS_KEY_ID, secretAccessKey: process.env.YOUR_SECRET_ACCESS_KEY}); return { uri: `https://${host}${path}`, headers: { Authorization: headers['Authorization'], 'X-Amz-Content-Sha256': headers['X-Amz-Content-Sha256'], 'X-Amz-Date': headers['X-Amz-Date'], 'Content-Type': 'image/jpeg', } }}See: 609974221 这篇关于React Native-一种无需缓存就可以非常快速地加载图像的更好方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！