Way to remove cache?

[abhionlyone]

I've set enableCache: true and this is causing few issues in the app.

When the user is logged out, I'm removing all the user data with the below code:

storage.remove({
  key: 'user'
});

But the problem is If I immediately sign in with a new user account, The old user account data is loaded due to enableCache: true.

When I set enableCache: false everything works fine.

So, I'm wondering if there is an option to manually expire cache when a user does log out.

[sunnylqm]

Cache should not have any issue. Can you post your code here?

[abhionlyone]

var storage = new Storage({
    size: 1000,
    storageBackend: AsyncStorage,
    defaultExpires: null,
    enableCache: true,
    sync: {}
})

and I'm saving the user data with the below code:

storage.save({
  key: 'user',
  data: res.data,
  expires: null
 });

and on user logout:

storage.remove({
  key: 'user'
});

[abhionlyone]

The thing is if you reload the app, it will load the new user data. So I assume on reloading the cache is getting expired.

[sunnylqm]

Cache is just in memory and should not affect any logic. What is special in your scenario?

[abhionlyone]

@sunnylqm Ok Thanks!! When I get some time, I will create a simple application and try to replicate the scenario.

Meanwhile, I've set enableCache: false and everything seems to be working clean & nice.

[1111mp]

@sunnylqm 我也遇到了同样的问题 在开发环境下 我的react-native的版本是0.55.4 react-native-storage的版本是0.2.3 我使用的场景是这样的，在app登录成功之后跳转页面并调用相关借口获取数据并存到缓存中： ` export const storage = new Storage({ size: 1000, storageBackend: AsyncStorage, defaultExpires: 1000 3600 24, enableCache: false }) // 全局变量 global.storage = storage;

storage.sync = ASYNC;

在退出app时调用如下的方法清空所有key-id的缓存： clearLogout = () => { LOGOUT().then(res => { storage.clearMap(); this.props.rootStore.init(); this.props.navigation.reset([NavigationActions.navigate({ routeName: 'LoginWrapper' })], 0) },err => {

  })
}

` 但是当我退出登录跳转到登录界面，在不重启app的情况下直接再登录，这时候app的缓存是上一个的缓存，但是当我重启app之后就正常了 然后我设置enableCache: false的时候就不会出现这个情况 求解中。。。

[sunnylqm]

@1111mp Try new 0.2.4 or 1.0.0-beta.1 version.

@AbhiOnlyOne remove is an async promise so you need to await it or use then to ensure the operation orders

[abhionlyone]

@sunnylqm Thanks!

[1111mp]

@sunnylqm Thank you. I'll try it.

[1111mp]

@sunnylqm I just tried it,but the problems still exist in 1.0.0-beta.1 versions. I must to set enableCache: false and the problem can only be solved. That's how I read the data：

[sunnylqm]

How does this loadAddrBook related to removing data?

[1111mp]

Yes, they don't matter. I logged out after clearing the cache, and then logged in.If I don't set it up like this，the read cache is still the last cache.When I restarted App, the cache returned to normal. I don't know why.

[sunnylqm]

And why do you save data like {key: 'addrBook', id: 'addrBook'}? This should be a key only data and should be removed manually.

[sunnylqm]

https://github.com/sunnylqm/react-native-storage/issues/157#issuecomment-394611729