使用Cassandra的Ionic移动应用，那么本地存储呢？

npm install @ionic/storage-angular

import { IonicStorageModule } from '@ionic/storage-angular';

@NgModule({
  imports: [
    IonicModule.forRoot(),
    IonicStorageModule.forRoot()
  ]
})
export class AppModule { }

import { Storage } from '@ionic/storage-angular';

@Component({
  selector: 'app-my-component',
  templateUrl: 'my-component.html'
})
export class MyComponent {
  constructor(private storage: Storage) { }

  // 读取本地存储的数据
  async getData() {
    const value = await this.storage.get('key');
    console.log('Value:', value);
  }

  // 写入本地存储的数据
  async setData() {
    await this.storage.set('key', 'value');
    console.log('Data saved');
  }

  // 删除本地存储的数据
  async removeData() {
    await this.storage.remove('key');
    console.log('Data removed');
  }
}