Contact emails
[email protected], [email protected]

Specification
https://www.w3.org/TR/IndexedDB


Summary
Chromium's IndexedDB implementation is rewritten on top of SQLite, to replace 
the previous implementation that uses a hybrid of LevelDB and flat files. There 
is no change to the Web API. This is expected to improve reliability and, to a 
lesser extent, performance. For now this is applied only to in-memory contexts 
such as Incognito mode in Chromium and Google Chrome. This limits the impact of 
any new bugs, as well as puts off the need to worry about migration of existing 
data persisted to disk.


Blink component
Blink>Storage>IndexedDB


Web Feature ID
indexeddb


Search tags
sqlite, idb, indexeddb, leveldb


Risks




Interoperability and Compatibility
Interop: this work entails a web-visible behavioral change concerning an edge 
case in IDB transaction scheduling. This change brings Chromium in line with 
Firefox and Safari. (Both new and old behavior are standards-compliant.) See 
demo. Compatibility: This PSA exists primarily to warn of the risk of 
unintended breakage. The later step where persisted databases are stored with 
SQLite, and existing data is migrated to SQLite, will have higher associated 
risks and will have its own PSA.

Gecko: No signal

WebKit: No signal

Web developers: No signals

Other signals:


Security
All data on disk is still segregated by storage bucket (origin). Both new and 
old implementation are newly fuzz-tested.


WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it 
has potentially high risk for Android WebView-based applications?
No information provided



Debuggability
existing IndexedDB DevTools support is unimpacted


Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, 
ChromeOS, Android, and Android WebView)?
Yes


Is this feature fully tested by web-platform-tests?
Yes
https://wpt.fyi/results/IndexedDB




Tracking bug
https://issues.chromium.org/issues/436880911


Estimated milestones


Shipping on desktop 144

DevTrial on desktop 144

Shipping on Android 144




Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5126896685809664


This intent message was generated by Chrome Platform Status.

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