IndexedDB: Difference between revisions

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| version_date = 11 March 2021<ref name="standard">{{Cite web|url=https://www.w3.org/TR/IndexedDB/|title=Indexed Database API 3.0|editor-first=Ali|editor-last=Alabbas|editor-first2=Joshua|editor-last2=Bell|author=Web Applications Working Group|publisher=Web Applications Working Group|website=W3C|version=W3C First Public Working Draft|date=2021-03-11|access-date=2021-05-15}}</ref>

| preview = Editor's Draft

| preview_date = 11 March 2021<ref name="standard-draft">{{Cite web|url=https://w3c.github.io/IndexedDB/|title=Indexed Database API 3.0|editor-first=Ali|editor-last=Alabbas|editor-first2=Joshua|editor-last2=Bell|author=Web Applications Working Group|publisher=Web Applications Working Group|website=W3C|version=Editor’sEditor's Draft|date=2021-03-11|access-date=2021-05-15}}</ref>

| organization = {{Plainlist|

* {{abbr|[[World Wide Web Consortium|W3C]]|World Wide Web Consortium}}

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}}

The '''Indexed Database API''' (commonly referred to as '''IndexedDB''') is a [[JavaScript]] [[application programming interface]] (API) provided by [[web browser]]s for managing a [[NoSQL]] [[database]] of [[JSON]] objects. It is a standard maintained by the [[World Wide Web Consortium]] (W3C).<ref name="standard" />

As an alternative to the [[Web storage]] standard, IndexedDB can provide more storage capacity. Web storage has [[Web storage#Storage size|fixed limits]] per [[website]], but IndexedDB limits are "usually quite large, if they exist at all".<ref>{{cite web |title=Working with IndexedDB |url=https://developers.google.com/web/ilt/pwa/working-with-indexeddb |publisher=Google Inc. |access-date=19 January 2019}}</ref>

[[Use case]]s for IndexedDB include caching [[web application]] data for [[offline]] availability.<ref>{{cite web |title=Using IndexedDB |url=https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API/Using_IndexedDB |website=MDN |publisher=Mozilla |access-date=19 January 2019}}</ref> Some browser modules, such as [[Web development tools|devtools]] or [[browser extension|extensions]], may also use it for storage.

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|editor-first=Ali|editor-last=Alabbas

|editor-first2=Joshua|editor-last2=Bell

}}</ref> ''IndexedDB 3.0'' iswas currentlyreleased as a [[World Wide Web Consortium#Working draft (WD)|First Public Working Draft]] on 11 March 2021 and remains as a Working Draft {{As of|2024|12|3|lc=y}}.<ref>{{Cite nameweb |date="standard"2024-11-07 |title=Indexed Database API 3.0 publication history |url=https://www.w3.org/standards/history/IndexedDB-3/ |archive-url=https://web.archive.org/web/20241203185526/https://www.w3.org/standards/history/IndexedDB-3/ |archive-date=2024-12-03 |access-date=2024-12-03 |website=W3C |language=en}}</ref>

==Performance==

Because IndexedDB is running inside of the security sandbox of a browser, all operations have to go through various security layers which decreases the performance of IndexedDB. With IndexedDB 2.0 <ref name="w3c-blog-indexeddb-2.0">{{Cite web|url=https://www.w3.org/blog/news/archives/6795|title=Indexed Database API 2.0 is now a W3C Recommendation {{!}} W3C News|website=W3C News|author=W3C|date=2018-01-30|access-date=2021-05-16}}</ref> the getAll() method was added which allows to improve performance on bulk read operations.

==References==

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==External links==

* [https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API IndexedDB API] on [[MDN Web Docs]]

* [https://nolanlawson.github.io/database-comparison/ Browser database comparison]

* [https://rxdb.info/slow-indexeddb.html Slow IndexedDB]

{{Web browsers|fsp}}