react-native-fast-image VS hermes

Hey there, thanks for checking it out. I am using a Realm local db for persistence, PostgressSQL for server. But the caching for images is handled by Fast Image (https://github.com/DylanVann/react-native-fast-image)

Sounds like react-native-fast-image is what you're looking for but you can't use it with expo go.

Yeah man, here you go.

It’s hard to tell without the sample of your code, but a lot of the issues I had in my projects where solved using react-native-fast-image

One of the common performance issues can be due to large image files or a lot of images inside our app. We can optimize those images with the help of an awesome library -react-native-fast-image.

However, you can easily resolve these issues using third-party libraries, like react-native-fast-image. This library is available for both iOS and Android and works really well.

Article Tldr: react-native-fast-image

Hermes is a big one as well: low startup latency, low memory

https://hermesengine.dev/

Hermes

InstagramBundle.js.hbc.spk.xz is likely a compressed version of Hermes bytecode (js.hbc)"

In React Native's case, it uses an engine called Hermes:

📜 I made JSON.parse() 2x faster: Radek proposes to improve the performance of Hermes by using very fast C++ libs based on SIMD instructions. Interesting to read even if you don't use React-Native. Ongoing discussions on the Hermes PR.

Thanks! There's a preliminary PR with a discussion here: https://github.com/facebook/hermes/pull/933 (and broader context here: https://github.com/facebook/hermes/issues/811 ). But we'll see if there's any interest on Hermes' side to merging it. They definitely want to improve the parser, but it's unclear to me if they want to take on the simdjson/simdutf dependencies.

For me it’s a JS engine for React Natve - https://hermesengine.dev/

💉 Building and injecting a JS bundle a basic concept: If the native code wasn’t changed, simply create JS bundle and inject it into the precompiled application. (You must take an extra step to convert a js file to bytecode if you use the Hermes js engine.)