SQLite is a SQL based relational database written in C that was crafted to be embed inside of applications. Complex queries or features are not supported which makes AsyncStorage not suitable for anything more then storing simple user settings data. There is a community fork of AsyncStorage that is actively maintained and open source.ĪsyncStorage is fine when only a small amount of data needs to be stored and when no query capabilities besides the key-access are required. But it was deprecated by the React Native Team which recommends to use a community based package instead. * you have to 'await' the call to getItem()Ĭonst value = await AsyncStorage.getItem( 'myKey') ĪsyncStorage was originally included in React Native itself. ![]() This is a big benefit because long running writes and reads will not block your JavaScript process which would cause a laggy user interface. The big difference is that access to the AsyncStorage is not a blocking operation but instead everything is Promise based. AsyncStorageĪsyncStorage is a key->value storage solution that works similar to the browsers localstorage API. While I would recommend to use RxDB for most use cases, it is still helpful to learn about other alternatives. There are multiple database solutions that can be used with React Native. NOTICE: You are reading this inside of the RxDB documentation, so everything might be opinionated. Instead a different storage solution must be chosen that does not come directly with React Native itself but has to be installed as a library or plugin. In difference to the JavaScript runtime of browsers, React Native does not support all HTML5 APIs and so it is not possible to use browser storage possibilities like localstorage, cookies, WebSQL or IndexedDB. ![]() Mostly it is used to create hybrid Apps that run on mobile devices at Android (google) and iOS (apple). React Native provides a cross-platform JavaScript runtime that runs on different operating systems like Android, iOS, Windows and others.
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