对于大数据，可以在存储之前将其分割成较小的块。并且使用SQLite或Realm等本地数据库来进行存储。

示例代码:

import SQLite from 'react-native-sqlite-storage';

const db = SQLite.openDatabase({ name: 'my.db' });

const saveData = async (data) => {
  // 将大数据分割成块
  const chunkSize = 100;

  for (let i = 0; i < data.length; i += chunkSize) {
    const chunkData = data.slice(i, i + chunkSize);

    // 存储每个块
    await new Promise((resolve, reject) => {
      const valuesString = chunkData.map(datum => `("${datum}")`).join(',');
      const sql = `INSERT INTO my_table (data) values ${valuesString};`;

      db.transaction((tx) => {
        tx.executeSql(sql, [], () => {
          resolve(true);
        }, (err) => {
          reject(err);
        });
      });
    });
  }
};

const getData = async () => {
  // 从数据库中读取所有数据
  const sql = 'SELECT * FROM my_table;';
  const results = await new Promise((resolve, reject) => {
    db.transaction((tx) => {
      tx.executeSql(sql, [], (_, { rows }) => {
        resolve(rows);
      }, (err) => {
        reject(err);
      });
    });
  });

  // 将数据合并并返回
  return results._array.map(result => result.data);
};