[Webkit-unassigned] [Bug 178204] IndexedDB causes massive storage usage on iOS, never recycles usage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=178204

--- Comment #8 from Chris Dumez <cdumez at apple.com> ---
(In reply to Chris Dumez from comment #7)
> (In reply to Nishanth from comment #6)
> > We are running in to the same issues on ios apps with indexed db for offline
> > storage where customers have complained about app occupying humongous
> > storage space. One device showed the app has used up 18.4G of storage but
> > the actual document size is under 30 Mb. Any help on this will be greatly
> > appreciated.
> 
> Does not seem to reproduce for me on iOS 12 beta (or macOS) with Safari.
> 1. Went to https://ssbyte.com/dbtest/ in Safari
> .../Library/WebKit/WebsiteData/IndexedDB/https_ssbyte.com_0/__dbnames/
>     68K Jul 20 16:30 IndexedDB.sqlite3
>     32K Jul 20 16:30 IndexedDB.sqlite3-shm
>    8.1K Jul 20 16:30 IndexedDB.sqlite3-wal
> 
> 2. reloaded the page several times:
> .../Library/WebKit/WebsiteData/IndexedDB/https_ssbyte.com_0/__dbnames/
>     68K Jul 20 16:30 IndexedDB.sqlite3
>     32K Jul 20 16:30 IndexedDB.sqlite3-shm
>    8.1K Jul 20 16:30 IndexedDB.sqlite3-wal

If I relaunch Safari and reopen the page, it temporarily increases a bit:
    68K Jul 20 16:42 IndexedDB.sqlite3
    32K Jul 20 16:42 IndexedDB.sqlite3-shm
    16K Jul 20 16:42 IndexedDB.sqlite3-wal

But then if I reload, the size goes down again.

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