IndexedDB relaxed durability transactions
Exposes an optional relaxedDurability parameter on IDBDatabase.transaction to control flushing to disk.
Allow developers to explicitly trade off durability for performance. Currently after writing an IndexedDB transaction, Firefox does not flush to disk but Chrome does. This flush increases the durability (in the ACID sense) in that it will be guaranteed to have been written all the way to disk rather than merely to an intermediate OS cache. However, this comes with a significant performance cost. On one test benchmark, not flushing caused a 10X+ performance improvement in adding new objects to a database: https://chromium-review.googlesource.com/c/chromium/src/+/1775557 There is a future hope that we could make the relaxedDurability=true the default instead of opt-in.
Status in Chromium
Enabled by default (tracking bug) in:
- Chrome for desktop release 82
- Chrome for Android release 82
- Android WebView release 82
Consensus & Standardization
Intent to Prototype urlIntent to Prototype thread
Last updated on 2020-03-15