Which local DB is used by Facebook mobile application(android & ios) - facebook

Question

Which one is the best local database for react native apps? And what does facebook and instagram use to store data locally?

Answer 1

It's a nice question, but I don't know! but
I'm pretty sure that they use multiple NO-SQL DataBase for their server.
Anyway, If you are searching a local database for react-native
I will suggest you to use Realm -> https://realm.io/
It's use his own ORM and is build in Native for both platform IOS and Android, easy to use!
There some example: realm.js
import * as RealmDB from 'realm';
class Passenger extends RealmDB.Object {}
Passenger.schema = {
name: 'Passenger',
primaryKey: 'id',
properties: {
'id' : 'string',
'firstname' : { type: 'string', optional: true },
'lastname' : { type: 'string', optional: true },
'birthdate' : { type: 'int', optional: true },
'email' : { type: 'string', optional: true },
'phone' : { type: 'string', optional: true },
'child' : { type: 'linkingObjects', objectType: 'Child', property: 'passengers' }
}
};
class Travel extends RealmDB.Object {}
Travel.schema = {
name: 'Child',
primaryKey: 'id',
properties: {
'id' : 'string',
'name' : 'string'
}
};
const realmInstance = new RealmDB({
schema: [Passenger, Child],
});
export default realmInstance;
use.js
import realmInstance from "./realm";
export default class use {
static writeToRealm(){
realm.write(() => {
let passenger = realm.create('Passenger', {
'id' : "..."
'firstname' : "...",
'lastname' : "...",
"..."
})
}
static readPassengers(){
const passengers = realmInstance.objects('Passengers');
return passengers
}
}
Hope it's help :)