iOS 13.4 and Safari 13.1 persistent storage

Like mentioned on https://github.com/localForage/localForage/issues/943 Apple announced to clear all script-writeable storages after 7 days of inactivity on WebKit in iOS 13.4 and Safari 13.1.

More info: https://webkit.org/blog/10218/full-third-party-cookie-blocking-and-more/ Storages affected: Indexed DB, LocalStorage, Media keys, SessionStorage, Service Worker registrations

Will this also reflect on cordova apps using this plugin without sqllite and should be added to the readme.

Edit: i think native cordova apps should not be affected by this, as only domains that have been classified by ITP to track users are affected: https://webkit.org/blog/9521/intelligent-tracking-prevention-2-3/

[tofumatt]

To clarify: all sites visited by Safari are affected by this change, regardless of domain. There’s more context in https://github.com/localForage/localForage/issues/943

But Cordova apps won’t be affected by this because only Safari has ITP enabled; code using WebViews/WKWebView/etc. doesn’t have ITP enabled so should be fine. 🙂

Only websites visited by Safari are affected.

[mhartington]

Hey everyone. Just catching this issue.

As it stands right now, the following is true:

• Storage mechanism in WKWebview are not affected by this change. So hybrid web apps are safe
• Web Apps saved to the home screen are also not affected by this change. See this tweet from Apple/Safari Devrel.

https://twitter.com/jonathandavis/status/1243228885006708737

• Web Apps accessed through Safari will have a 7 day timer on storage. If a user does not interact with a site, the storage will be deleted.

This is all the information we have currently. There’s still some confusion on the details, but there’s been a lot of confirmation from Apple that this will not affect web apps.

There’s still a lot of question, like is the storage cleared from first-party or 3rd-party? Or both? We’re observing the situation but would like to reassure that we are on top of this.

Thanks