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Clearing cookies is a common user action. Even for relatively non-technical users. And under storage pressure, browsers evict data stored in IndexedDB, LocalSt

by grun 8y ago

Clearing cookies is a common user action. Even for relatively non-technical users. And under storage pressure, browsers evict data stored in IndexedDB, LocalStorage, and/or SessionStorage. See https://developers.google.com/web/fundamentals/instant-and-offline/web-storage/offline-for-pwa#how_does_cache_eviction_work https://developers.google.com/web/fundamentals/instant-and-o... IronDB is resilient in the face of such events. Thank you for your feedback. I'll add an explanation about such in the documentation.

tptacek 8y ago
That's the answer I was looking for, thanks. The intuition I have is that if someone deletes something from localStorage (or clears localStorage altogether), they want that data gone.
chx 8y ago
What about https://developers.google.com/web/updates/2016/06/persistent-storage https://developers.google.com/web/updates/2016/06/persistent...
- grun 8y ago
  Persistent storage requires explicit user permission. IronDB doesn't. See https://developers.google.com/web/updates/2016/06/persistent-storage#how_do_i_make_my_storage_persistent https://developers.google.com/web/updates/2016/06/persistent.... Great point, though. I'll highlight this in the documentation. Thank you.
staticvar 8y ago
Those docs are dated unfortunately. For example, in my tests on multiple android devices and Mac OS the storage limit on Chrome is closer to 20% of total disk size and you don't need to prompt the user for persistent storage like you prompt for access to gps.
staticvar 8y ago
If anyone could point to an up to date docs around storage eviction in browsers it would be greatly appreciated. It's been a big hit to our team's confidence in the "use the platform" mentality that this is not accurately documented.
- edoceo 8y ago
  I remember reading a 5MB limit some place (ages ago) and I'm not able to find the reference at the time. My team has been assuming that is true (for local,session)Storage and so far haven't been bitten. Only occasionally have we even gotten close to that size. You can also shove loads of data in the DOM. Edit: one of the old refs - 10MB https://www.html5rocks.com/en/tutorials/offline/quota-research/ https://www.html5rocks.com/en/tutorials/offline/quota-resear...

by grun 8y ago

tptacek 8y ago

That's the answer I was looking for, thanks. The intuition I have is that if someone deletes something from localStorage (or clears localStorage altogether), they want that data gone.

chx 8y ago

What about https://developers.google.com/web/updates/2016/06/persistent-storage https://developers.google.com/web/updates/2016/06/persistent...

grun 8y ago
Persistent storage requires explicit user permission. IronDB doesn't. See https://developers.google.com/web/updates/2016/06/persistent-storage#how_do_i_make_my_storage_persistent https://developers.google.com/web/updates/2016/06/persistent.... Great point, though. I'll highlight this in the documentation. Thank you.

staticvar 8y ago

Those docs are dated unfortunately. For example, in my tests on multiple android devices and Mac OS the storage limit on Chrome is closer to 20% of total disk size and you don't need to prompt the user for persistent storage like you prompt for access to gps.

staticvar 8y ago

If anyone could point to an up to date docs around storage eviction in browsers it would be greatly appreciated. It's been a big hit to our team's confidence in the "use the platform" mentality that this is not accurately documented.

edoceo 8y ago
I remember reading a 5MB limit some place (ages ago) and I'm not able to find the reference at the time. My team has been assuming that is true (for local,session)Storage and so far haven't been bitten. Only occasionally have we even gotten close to that size. You can also shove loads of data in the DOM. Edit: one of the old refs - 10MB https://www.html5rocks.com/en/tutorials/offline/quota-research/ https://www.html5rocks.com/en/tutorials/offline/quota-resear...