react-native-multithreading VS react-native-mmkv

You can look at MMKV, Vision Camera and some other libs based on JSI which work pretty fast. https://github.com/mrousavy/react-native-mmkv https://github.com/mrousavy/react-native-vision-camera https://github.com/mrousavy/react-native-multithreading

https://mobidev.biz/blog/how-react-native-app-development-works https://github.com/mrousavy/react-native-multithreading

☘️ take advantage of the next coming React Native architecture JSI + Fabric Rendering + Turbo Modules

react-native-multithreading: A library for spawning a secondary JavaScript runtime to run code in there. Pretty experimental

Have a look into react-native-multithreading.

Have you seen https://github.com/mrousavy/react-native-multithreading? Reanimated2 opens the doors to spinning up new JS threads. So we could essentially have multi-threaded JavaScript and avoid dropping down to the native layer at all 🎉.

Here's an example on how easy it is to use: const result = await spawnThread(() => { 'worklet' // expensive calculation return ... }) See mrousavy/react-native-multithreading (GitHub) for more details.

react-native-mmkv is a wrapper around MMKV that allows you to easily implement secure storage in your app. It is arguably the fastest key-value storage for React Native apps

Why do you need to access the db from the file system? Can you just use something like https://github.com/mrousavy/react-native-mmkv ?

By using libraries like Reanimated, React Native MMKV, and React Native Skia, you leverage the native thread. However, I know there are developers building amazing things who think outside the box. I'm always thrilled when I read engineering blogs from companies like Netflix, Meta, and Shopify. They create solutions beyond the limits.

mmkv is not really designed to be used for “heavy” writes, or often changing values. But more as e.g. NSUserDefaults. The storage keeps growing over time which may cause memory issues if used wrongly. Here’s a related github issue: https://github.com/mrousavy/react-native-mmkv/issues/440

Persistence - React Native MMKV (supports encryption natively and easily integrates with TanStack Query via persistQueryClient)

if you need to store something small and simple use whatever. if is complex and speed is important use something performant. realmDB, https://github.com/mrousavy/react-native-mmkv and others are good fit for the job.

Screw you all, I'll use MMKV as my Local DB: please do not, as explained here.

Try react native mmkv https://github.com/mrousavy/react-native-mmkv